FAQ

Questions and answers

Seating area

Is there a weight limit for Tune saddles?

All saddles have a weight limit of 90 kg.

Serial number and seal tune saddle

Our saddles go through different quality control steps. When the saddle passed all checkpoints it gets a seal with a unique serial number. The saddle is only original tune with this seal. If you should have a saddle without a seal it is either older than 2014 or a copy.

With which torque is my Tune saddle fixed to the seat-post?

Due to the different clamping mechanisms it is not possible to specify an exact value. The torque is prescribed on behalf of the producer and needs to be respected.

Are the Tune saddles compatible with my seat-post?

Principally there are no restrictions except that the seat-post producer prohibits the mounting of carbon saddles.

The saddle rails of Tune saddles are high-oval, problems may occour with lateral clamp rings. Special clamp rings are very often offered. You can find more information in our product descriptions.

Whith wich seatposts is the Skyracer compatible?

The Skyracer is compatible with every regular seatpost.

The Skyracer has two rails with a diameter of 7 mm which are 43 mm apart. The clamping area is 75 mm long.

 

<img class=“size-medium wp-image-75513 aligncenter“ src=“http://service.tune.de/wp-content/uploads/2018/12/FAQ-Skyracer-Kompatibilität-300×207.jpg“ alt=““ width=“300″ height=“207″ />

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How is the Skyracer recycled?

The SKYRACER is the world’s first carbon saddle that can be completely recycled.

The saddle consists of small single long-fiber carbon snippets, which are not held together as usual with epoxy resin, but by an aviation-approved thermoplastic material. For recycling, the connected carbon snippets are returned to their original state by means of „electrical fragmentation“ (similar to a lightning strike). Afterwards, the carbon snippets loosened by the thermoplastic can be used again for the production of a new Skyracer.

That’s not enough for us. This process is possible up to 5 times !! We guarantee a holistic recycling cycle.

Is the Skyracer comfortable?

Whether the Skyracer is the perfect saddle for you, we can not predict. But we can give you the necessary cornerstones so you can decide that for yourself.

The ergonomic shape of the SKYRACER deliberately minimizes pressure on your perineal area. The forces are introduced directly into both ischial tuberosities. The ischial tuberos are able to hold your weight to wear over a longer period of time. At the beginning, such saddles can look unfamiliar as when you descend from your bike in a different way. But you will quickly get used to this health-optimized form. Because the anatomically adapted specific concave-convex saddlecloth offers you two seating positions, relax / race.

The seats are generous and flat. With a width of 126mm the Skyracer fits on all common buttocks. In addition, the Skyracer, with the narrowest saddle point on the market and the curved side edges, combines lightweight construction with outstanding comfort.

Is it possible to re-cover the Speedneedle and what are the costs for it?

Yes it is possible. Please refer directly to Tune (Germany) or to the responsible distributor (outside of Germany).

How much clamping area does my seat post offer?

In our graphic you can see  how much room you have left for your support.

 

  lenght Min. lenght Max. lenght
Leichtes Stück 340 mm 160 mm 250 mm
  420 mm 240 mm 320 mm
Starkes Stück 340 mm 160 mm 250 mm
  420 mm 230 m 320 mm

 

 

Is it possible to shorten the seat-post?

Yes, the Starke Stück can be shortend. But please note, changes not made by Tune, render the warranty void. Due to safety reasons it is not allowed to shorten the Schwarze Stück.

Cockpit

My Sram Guide RS brake leaver is not thigh enough. What can I do?

The Sram Guide RS brake leaver has a slightly smaller diameter and our Wunderbar handlebar a slightly bigger diameter. But that is no problem.

The difference can, for example, be coped with Carbongrip from Effetto Mariposa. Carbongrip builds up and provides the needed grip.

Can I mount my gps above the steam with the PORTEUR?

Yes, technically it is possible to turn the Porteur and attach it with the two upper bolts of the steam.

With which bikecomputers is the PORTEUR compatible?

Our PORTEUR is compatible with all Garmin devices, as well as Sigma Rox 12.0. Other devices, such as Wahoo, have a different screw guide on the adapter, which makes it uncompatible to our PORTEUR.

Handlebar

My Sram Guide RS brake leaver is not thigh enough. What can I do?

The Sram Guide RS brake leaver has a slightly smaller diameter and our Wunderbar handlebar a slightly bigger diameter. But that is no problem.

The difference can, for example, be coped with Carbongrip from Effetto Mariposa. Carbongrip builds up and provides the needed grip.

Clamping

Why does my time trail skewer does not build up any tension?

Probably your dropouts are a bit to fin. In that case the quickrelease can not clamp the hub. The dropouts need to have a minimum width of 7 mm.

What can I do in case the clamping force of my quickrelease is too low?

As a rule the quickrelease is not strengthened sufficiently. It is necessary to use a higher operational force to close Tune quickreleases compared to other quickreleases. Please close the quickrelease by screwing on the nut to the stop, close then the quickrelease and open it again and then tighten the nut once again. Please close the quickrelease and position the lever next to the frame or fork. Don´t be afraid to damage the quickrelease. Due to its construction, the quickrelease withstands the force.

Why there are no spiral springs delivered together with DC-quickreleases?

The springs can negatively influence the clamping force of the quickrelease.

The TUNE U20 quickreleases are shipped with to different sets of nuts. The skyline nut enables the lightest construction, those nuts are installed when shipped. The Skyline nuts need a minimum space of 3.1mm between the outer side of the dropout (of the frame or fork) and the end of the hub-axle. In other words, the end of the hub-axle should not reach to far into the dropout. If this is the case the comfort nut has to be used. Attention, the front and rear skyline nut are different. They can be differenced by their outside diameter (front = Ø 16 mm, rear = Ø 17 mm). The included comfort nut is slightly heaver, but easier to handle.
Using the comfort nut the adjustment is more convenient. The end of the hub axle should not protrude beyond the dropout (only in very rare occasions).
1. Remove the skyline nut (attention, front and rear are different) and push the quickrelease axle through the hub. 2. Place the skyline nut in the dropout and screw in the quickrelease-axle by turning the carbon-lever. The quickrelease-axle should be screwed in until the resistance gets higher and the carbon-lever can be closed by hand. Before closing the lever please pay attention to the correct position of the excenter in the excenter-seat, excenter and excenter-seat have to be positioned flush to each other. Here the characteristics of carbon-axle should be noted. The carbon-axle is extremely tensile strength (this force is working when closing the carbon-lever), but is weaker at torsional forces (torsional forces appear when screwing in the axle). Should the wheel not be clamped strong enough, open the carbon-lever and screw the axle further in (when using the comfort nut it can simply be screwed further on). 3. The quickrelease-axle should protrude by at least one whole turn of thread after having closed the quickrelease. When closing the carbon-lever, do not be afraid of damaging the skewers, construction wise the quickrelease can withstand the high tension. When screwing in the quickrelease-axle into the skyline nut or the comfort nut one has the proceed carefully. The axle is made out of carbon, which is extremely tensile strength, but weaker at torsional forces. Therefore the axle and nut always have to be clean and well greased (see maintenance instructions), this keeps the friction low.

Are the Tune MTB quickreleases released for disc brakes and suspension forks?

Yes all Tune MTB quickreleases can be used with disc brakes and suspension forks.

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

Is it possible to shorten too long quickrelease axles?

Too long axles might be shortend. But the warranty for the axle and the female thread will then be voided. But the guarantee for the tensile strength remains valid. In case the thread needs to be shorten, then please deburr the end of the axle subsequently. The nut then can be unscrewed easily without grating.

Attention: Please do NOT shorten U20 quickrelease axles!

Bottle cages and bottles

Can I put my bottle in the dishwasher?

Yes, our bottles can be put into the dishwasher.

Can I fill hot drinks in Tune bottles?

No, we do not recommend to fill our bottles with hot drinks.

Are tune bottles BPA- and Phathalat free?

Yes our bottles are BPA and Phathalat free.

Conversion Kits

How do I converty my tune rear hub?

In this video we show you how to convert your rear hub: https://youtu.be/y_64LsUqSZE

Tools

I have a Campagnolo cassette and i want to use the Linientreu.

All 1/4 „bits fit into the bitmaking. For Campagnolo you need an extra Torx T27. This one is available in every hardware store and can be used.

Gerneral

With which torque do the brake pads have to be fixed?

The Tune brake pad should be fixed with 5 Nm.

Who can I turn to with technical problems?

Please turn to your local bike dealer.

Hubs

How do I converty my tune rear hub?

In this video we show you how to convert your rear hub: https://youtu.be/y_64LsUqSZE

How can I recognize an 11-speed freewheel?

The Shimano/Sram 11-speed freewheel is recognizable due to a groove (see illustration). The freewheel width of the Shimano/Sram roadbike freewheel is for Shimano/Sram 11-speed road bike cassettes designed. With a 1,8mm shim ring 8-/9-/10 -peed road bike cassettes as well as 8-/9-/10-speed MTB cassettes can be mounted.

11-Fach-Erkennen

 

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

Can I mount an 11-speed cassette on a 10-speed freewheel?

On a Shimano/Sram 10-speed freewheel you cannot assemble an 11-speed road bike cassette as it is 1,8mm to wide.

11-speed MTB cassettes are as wide as 10-speed cassettes. They can be used on a 10-speed Shimano/Sram freewheel.

By adding a 1,8mm Spacer, 10-speed road bike cassettes can be used on 11-speed Shimano/Sram freewheel.

 

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With which torque, do I need to mount my brake disc?

The brake disc needs to be mounted with a torque of 4-5 Nm.

Eventual screw lock rests need to be removed before anew assembly.

How and how often do I need to maintain my hub?

The maintenance of the hubs should be once a year. With regular use under extreme conditions (rain, mud, salted winter roads, transport in the rain) the hub should be maintained in shorter intervals. A regular maintenance of the hub ensures a long durability and optimal technical conditions.

What implies a regular maintenance?

The hub should be cleaned carefully in the assembled condition with removed cassette and disc brake and then examined carefully visual and functionaly.

When dismantled the bearings should be examined and the toothing system should be cleaned and regreased. Following up you find a maintenance manual in detail.

You can maintain your tune hub on your own, a maintenance manual can be found under Manuals.

In which widths are Tune Fat Hubs available?

The Fat King front hub is available in 135mm (quickrelease) and 177mm (thru-axle).

The Fat Kong rear hub is available in 170mm (quickrelease), 177mm (thru-axle), 190mm (quickrelease) and 197mm (thru-axle).

First Aid Cracking Hub

As known we had some problems with noisy hubs (15 mm version, red freewheel) often the hubs were described as the cause. We have solved these causes.

Crackling noises on the bike happen to appear an somehow belong to the nature of things. The source of the annoying noise is in most instances not the hub.

Very often it is not coming from the rear hub but results from somewhere else at the bike. The hollow spaces your bike has work as a resonance body (especially with carbon frames) and therefore it is very difficult to determine which component is responsible for the unwanted noise. But in most cases it is possible to determine the source with simple tools from at home. This saves time, effort and money.

To remove the cracking noise you need to determine its source. Please try out therefore the following steps to find the cause:

1) It is up to the rear wheel?

  • Please check if the crackle comes from the rear wheel. Therefore exchange your actual rear wheel – if possible – with another rear wheel. Then find out while a test drive with different load scenarios (e.g. weighing ride, uphill, curves) if it is the rear wheel. In case the cracking noise is still there it does not come from the rear wheel.
  • As an alternative you can mount the rear wheel including the tune hub onto another bike (e.g. of a friend) and then make a test drive.

2) Or is it the quick release?

  • Exchange the quick release or thru-axle skewer. The noise results very often from the quick release. Bad clamping force, defect quick release etc. might be the problem. When you do not hear noises with another quick release, please check the quick release. The quick release should be in perfect and clean condition and tightened properly.

3) Is it really the hub?

In case you have recognized that the cracking noise results from the rear wheel it might be coming from the cassette, rim, nipples or spokes.

  • Please check the spoke tension. Please press always with one hand, one side two spoke pairs together, they should not yield a lot. The spoke tension should be constant all around the wheel.
  • To determine if the spoke crossings are the source of the noise please stick a thin piece of cardboard for test purposes between the spoke crossings. In case the crackle disappears during the test drive, it is up to the spoke crossing.
  • It can also be the cassette (especially with SRAM XD cassettes with bolts). Please mount an alternative cassette for a test drive. In case you do not have any other cassettes for testing please take it off and clean carefully the freewheel and the cassette. At the end, you can remount the cassette with the indicated torque value.

Should you notice at the end of the test that the cracking noise comes from the rear hub than please contact our service (www.tune.de/servicecenter), we will help you along.

Is it possible to put a figure on the “considerably stiffer” Boost towards the standard widths.


In general we keep a low profile with percentage figures as the increase of the lateral stability may differ on the several rims. It can be said, that the stiffness of a 29er rear wheel with 148mm width is about 20% higher than as with 142 mm. The lateral stability increases about 17% at the front wheel due to the Boost standard.

Can a King MK hub be adapted to Predictive Steering?

The King MK hub can not be adapted for use with for the Predictive Steering standard . No, seriously: We are aware of the fact that it would be a lot easier for our customers to convert easily our existing hubs with 17 mm to Predictive Steering standard only with end caps. Hereto we have made several tests during the development stage. However we noticed that the RS-1 lost considerably of its torsional stiffness due to the missing fork bridge. Inasmuch as this will not be compensated with a special axle and bearings, the front wheel would draw left from the track when braking. This has been already noticeable for lighter biker with 160er brake discs…

Compatibility with new Campagnolo Cassettes (Chorus)

The new Campagnolo Chorus cassettes could not have been mounted completely onto our freewheels. We were aware of that issue, Campagnolo changed the contour of the backside of the cassette. So the cassette didn`t fit towards the stopper ring. It collides with its shoulder whereby the complete sprocket is sitting a little too far outside. As far as we know only the new Chorus cassette and probably also Record and Co. do have the modified contour.

So we decided to reduce the shoulder at the Campa stopper rings. The new stopper rings are now compatible with all Campagnolo cassettes. The new sprocket stopper rings are installed since September 2015. Rebuilding our hubs with the new Campagnolo sprocket stopper is very easy. In case of any questions don´t hesitate to contact our service team.

Why 148 mm hub-spacing and not 150 mm?

The reason for 148mm is the Q-factor.  150mm width requires an increased Q-factor, this is the reason for 148mm. The Q-factor of 135mm and 142 did not change therby. Due to the increase of the width from 142mm to 148mm, the position of the cassette changed, what led to a change of the chain line consequence. In order to achieve the same shifting performance, BOOST compatible cranks are needed. For cranks with spiders an adequate chainring or boost spider is needed. The position of the chainring moves 3mm outwards equally as the cassette. The Q-factor as well as the crank- and bearing width remain the same. Tune offers already the Black Foot and Smart Foot cranks as Boost version, here we use absoluteBlack chainrings.

 

Surely some of you wonder why the hub producer did not adapted 150mm hubs. A reduction of the distances is not possible, that is why we have designed our own BOOST hubs. The efforts have been worth it 😉

 

Why it is not possible to convert from 135/142mm to BOOST 148mm?

In our opinion, the rebuilt of a conventional hub into a BOOST standard in combination with distances is a “botched-up construction” and is not offered by us. The advantage of a BOOST frame is primarily the stiffness of the wheels. On the one hand we achieve this by raising the flange distance to improve the rear dish and on the other hand by enlarging the bearing spacing of the hub. An extension of the axle stubs leads to torsional weakening of the wheel stiffness and is therefore in our view completely counterproductive.

The BOOST standard is on the technical point of view a really good development, that we can confirm. It´s worth the investment but you shouldn´t save costs regarding the wheels!

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My 11 speed hub is larger than indicated. Is that normal?

Each millimetre counts!

shim_sramThere are some tricks necessary to place an 11spd cassette, as the almost 2mm, for which an additional sprocket is necessary, have to come from somewhere. Unfortunately a little longer freewheel  body is in that case not sufficient, as the chain on the smallest sprocket could collide with the frame. Therefore our hubs get built a millimeter larger. That should not affect the assembly into the frame. The rim is placed 0,5mm excentric after a rebuild from a 10spd into 11spd freewheel. Normally that does not disturb. There is an exception with a very limited rear tire freedom. Here it is useful to center the rim again. This is easily possible with our wheels.

How many „clicks“ do Tune hubs have?

Tune Hubs have a „27 tooth system“, in which 3 pawls intervene.

Which freewheel for which 11-speed cassette?

Current Shimano 11-speed MTB groupsets (XTR, XT, etc.) can be used on normal 10-speed freewheelbodys. Shimano 11-speed roadbike groupsets require a special, wider, freewheelbody.

Is it possible to convert the KONG (or PRINCE) to a X-12 system?

It is possible with hubs produced after 2009. The axle (including distances) has to be changed. Together with the adjusting washers, the axial bearing play has to be adjusted. A X-12 hub together with another axle can always be converted to a normal quick release system.

How can I adjust the axial bearing play of my hub?

Adjust axial play on our tune hubs

The tune hubs are a plugged system. The hub axles have no collar for the bearing seat.

Tune hubs require low axial clearance for proper operation.

This game is set with shims. The shims are located under the right end cap. The necessary axial clearance is 0.15mm-0.20mm.

Basically, the axles of the hubs are always inserted from the left side into the hub. The left side is for example the brake disc side or always the side near the letter „t“ of the „tune“ logo on the hub body.

Prerequisite to find out the fitting plate thickness:

 

  • All bearings are firmly seated against the stop in the bearing seats.
  • The axle with the left end piece is inserted until it stops.
  • The freewheel set on the rear hub is seated without air firmly at its final position on the hub body.

 

Now measure the axle projection (a) to the bearing with a caliper gauge. Similarly, the insertion depth (b) of the right end cap is measured.

The dimension „a“ must always be a few tenths of a millimeter larger than the dimension „b“.

A descriptive guide and hints are available in our video. From 4:44 min

 

Is it possible to change the width of Tune rear hubs (130mm>135mm; 135mm

Yes it is possible.

The hubs can be converted with our conversion kits.

Is it possible to modify the loudness Tune freewheels?

The loudness is a typical property of Tune hubs.

It is possible to reduce the loudness at short-term by adding more grease into the interlocking.

Thereby the strike of the pawl onto the interlocking gets dampened.

A doubling of the pawl spring (two pawl springs are placed on top of each other) makes the hub louder as the pawls get pressed with more pressure in the interlocking.

The use of two pawl springs leads to a higher abrasion of the freewheel and of the pawls.

Is it a problem if the freewheel has grooves from the sprockets at the bridge?

Single sprockets always eat through the bridge of the freewheel due to the lower surface hardness  of the aluminum freewheel towards the steel or titanium sprockets. This is normally not a problem, as the material gets compressed at that spot and the movement stops.

You can remove the sprockets the easiest with two drivers, while turning it into the opposite directions of the load. Protruding burrs should be removed with a file so that the cassette sprockets can be mounted.

Are old Tune hubs compatible with Campagnolo 11-speed freewheel bodys?

Yes this is possible, but must be tried individually. If you have problems please change the freewheel body.

What can I do in case the sprocket cannot be removed from the freewheel after the head lock nut has been removed?

It is possible that single sprockets eat through the bridge of the freewheel body in the direction of loading.

The sprockets are the easiest detachable with the help of two chain whips, whereby the through eated sprocket needed to be turned contrary to the direction of loading.

Remove edges and ridges with a file and mount again the cassette sprocket.

Can my hub be rebuilt to another axle- or free wheel standard?

Tune hubs get steadily developed and therefore details change over time. The colour of the free wheel has been changed during bigger changes, therefore the colour of the free wheel is important for the recognition of the hub. The axle or free wheel standard might be changed with appropriate conversion kits.

Options for disc brake hubs (Kong / Prince)
freewheel body colour: red blue
Shimano/SRAM 10-speed X X
Shimano/SRAM 11-speed X
Campagnolo X X
Sram XD
X
Schnellspanner (135 mm) X X
X12 (142×12) X X
Maxle (135×12) X X

 

Options for rim brake hubs (Mag)
freewheel body colour: red blue
Shimano/SRAM 10-speed
X X
Shimano/SRAM 11-speed X
Campagnolo X X
quickrelease buld in width 130mm X X
quickrelease buld in width 135mm X X

 

It is possible to replace my carbon axle with an aluminium axle?

Yes this is no problem. You need to replace the whole axle and both distances.

Is it possible to exchange the XOT double bearing of my older hub with a single bearings?

Yes, when the hub has an aluminium axle, the XOT bearing can be exchanged with one 61802 (15x24x5mm) and one 61902 (15x28x7mm) bearing. You need to insert a thin adjusting washer  (0,2mm) between both bearings. In case the hub has a carbon axle XOT bearings have to be used.

Is it possible to maintain or exchange bearings?

Only industrial ball bearings are used in our hubs, which cannot be regreased. In case a bearing is completely abraded it needs to be exchanged.

Is it possible to convert my front hub to QR15?

All disc front hubs, built since 2009, can be converted to QR15 with a special conversion kits. The hub cannot be rebuild in case there is a spot for the allen key on the axle.

How can I see how old my rear hub is?

You can determine more or less the age of the hub on the basis of the colour of the freewheel body.

  • Blue – delivery since 2011
  • Red- delivery between 2004-2011 (except Kong MK with 150x12mm)
  • Green or grey – delivery before 2004

Can I maintain my tune hubs by myself?

Yes, you can maintain your tune hubs by yourself. We offer detailed descriptions on how to open and close tune hubs in the manuals.

Does an 8-speed cassette fit on a 9-/10-speed freewheel?

Yes it does, with the help of a 1.8mm spacer.

Quickrelease

Why does my time trail skewer does not build up any tension?

Probably your dropouts are a bit to fin. In that case the quickrelease can not clamp the hub. The dropouts need to have a minimum width of 7 mm.

What can I do in case the clamping force of my quickrelease is too low?

As a rule the quickrelease is not strengthened sufficiently. It is necessary to use a higher operational force to close Tune quickreleases compared to other quickreleases. Please close the quickrelease by screwing on the nut to the stop, close then the quickrelease and open it again and then tighten the nut once again. Please close the quickrelease and position the lever next to the frame or fork. Don´t be afraid to damage the quickrelease. Due to its construction, the quickrelease withstands the force.

Why there are no spiral springs delivered together with DC-quickreleases?

The springs can negatively influence the clamping force of the quickrelease.

The TUNE U20 quickreleases are shipped with to different sets of nuts. The skyline nut enables the lightest construction, those nuts are installed when shipped. The Skyline nuts need a minimum space of 3.1mm between the outer side of the dropout (of the frame or fork) and the end of the hub-axle. In other words, the end of the hub-axle should not reach to far into the dropout. If this is the case the comfort nut has to be used. Attention, the front and rear skyline nut are different. They can be differenced by their outside diameter (front = Ø 16 mm, rear = Ø 17 mm). The included comfort nut is slightly heaver, but easier to handle.
Using the comfort nut the adjustment is more convenient. The end of the hub axle should not protrude beyond the dropout (only in very rare occasions).
1. Remove the skyline nut (attention, front and rear are different) and push the quickrelease axle through the hub. 2. Place the skyline nut in the dropout and screw in the quickrelease-axle by turning the carbon-lever. The quickrelease-axle should be screwed in until the resistance gets higher and the carbon-lever can be closed by hand. Before closing the lever please pay attention to the correct position of the excenter in the excenter-seat, excenter and excenter-seat have to be positioned flush to each other. Here the characteristics of carbon-axle should be noted. The carbon-axle is extremely tensile strength (this force is working when closing the carbon-lever), but is weaker at torsional forces (torsional forces appear when screwing in the axle). Should the wheel not be clamped strong enough, open the carbon-lever and screw the axle further in (when using the comfort nut it can simply be screwed further on). 3. The quickrelease-axle should protrude by at least one whole turn of thread after having closed the quickrelease. When closing the carbon-lever, do not be afraid of damaging the skewers, construction wise the quickrelease can withstand the high tension. When screwing in the quickrelease-axle into the skyline nut or the comfort nut one has the proceed carefully. The axle is made out of carbon, which is extremely tensile strength, but weaker at torsional forces. Therefore the axle and nut always have to be clean and well greased (see maintenance instructions), this keeps the friction low.

Are the Tune MTB quickreleases released for disc brakes and suspension forks?

Yes all Tune MTB quickreleases can be used with disc brakes and suspension forks.

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

Is it possible to shorten too long quickrelease axles?

Too long axles might be shortend. But the warranty for the axle and the female thread will then be voided. But the guarantee for the tensile strength remains valid. In case the thread needs to be shorten, then please deburr the end of the axle subsequently. The nut then can be unscrewed easily without grating.

Attention: Please do NOT shorten U20 quickrelease axles!

Saddle

Is there a weight limit for Tune saddles?

All saddles have a weight limit of 90 kg.

Serial number and seal tune saddle

Our saddles go through different quality control steps. When the saddle passed all checkpoints it gets a seal with a unique serial number. The saddle is only original tune with this seal. If you should have a saddle without a seal it is either older than 2014 or a copy.

With which torque is my Tune saddle fixed to the seat-post?

Due to the different clamping mechanisms it is not possible to specify an exact value. The torque is prescribed on behalf of the producer and needs to be respected.

Are the Tune saddles compatible with my seat-post?

Principally there are no restrictions except that the seat-post producer prohibits the mounting of carbon saddles.

The saddle rails of Tune saddles are high-oval, problems may occour with lateral clamp rings. Special clamp rings are very often offered. You can find more information in our product descriptions.

Whith wich seatposts is the Skyracer compatible?

The Skyracer is compatible with every regular seatpost.

The Skyracer has two rails with a diameter of 7 mm which are 43 mm apart. The clamping area is 75 mm long.

 

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How is the Skyracer recycled?

The SKYRACER is the world’s first carbon saddle that can be completely recycled.

The saddle consists of small single long-fiber carbon snippets, which are not held together as usual with epoxy resin, but by an aviation-approved thermoplastic material. For recycling, the connected carbon snippets are returned to their original state by means of „electrical fragmentation“ (similar to a lightning strike). Afterwards, the carbon snippets loosened by the thermoplastic can be used again for the production of a new Skyracer.

That’s not enough for us. This process is possible up to 5 times !! We guarantee a holistic recycling cycle.

Is the Skyracer comfortable?

Whether the Skyracer is the perfect saddle for you, we can not predict. But we can give you the necessary cornerstones so you can decide that for yourself.

The ergonomic shape of the SKYRACER deliberately minimizes pressure on your perineal area. The forces are introduced directly into both ischial tuberosities. The ischial tuberos are able to hold your weight to wear over a longer period of time. At the beginning, such saddles can look unfamiliar as when you descend from your bike in a different way. But you will quickly get used to this health-optimized form. Because the anatomically adapted specific concave-convex saddlecloth offers you two seating positions, relax / race.

The seats are generous and flat. With a width of 126mm the Skyracer fits on all common buttocks. In addition, the Skyracer, with the narrowest saddle point on the market and the curved side edges, combines lightweight construction with outstanding comfort.

Is it possible to re-cover the Speedneedle and what are the costs for it?

Yes it is possible. Please refer directly to Tune (Germany) or to the responsible distributor (outside of Germany).

Cranksets and Bottom Bracket

Is it possible to adjust a Tune bottom bracket to another bottom bracket cup width?

Yes, it is possible. Together with the according distances which get mounted in the bottom bracket, the AC 38 (square bottom bracket) and the Sixpack (hexagon bottom bracket) can be rebuild. For BSA (1,37”x24) there are the following possibilities: 68mm; 68mm/E-Type; 73mm/E-Type. For a width of 73mm, the shaft should be at least 110mm, for 73mm/E-type at least 117mm.

Which bottom bracket with is needed for the optimal chainline?

Road 2-speed: 105mm (43,5mm chainline)
MTB 3-speed: 117mm (50mm chainline)
MTB 2-speed: 110mm (49mm chainline)
!!!This chainline is not possible for all frames, as it is possible that the chainrings touch the frame!!!
Rohloff MTB: 113mm (54mm chainline)
Fully-MTB, 3-speed (z.B. Scott, Liteville): 120mm (52mm chainline)
The chainline can change slightly due to the clamping of the crankset.

How is the chainline of a crank measured?

For the chainline the distance between middle of the seattube and chainring is always measured. For two chainrings the the middle between the two chinrings is used. With three chainrings its measured to the middle chainring.

What is the Q-factor for FastFoot cranks?

This is pending on the length of the chosen spline and of the crank type (road bike or MTB). Road bike crank with 105mm spline: MTB crank with 117mm spline.

With which bottom bracket standards are the Tune SMART FOOT & BLACK FOOT crank sets compatible?

Our crank sets are compatible with most bike frames. We offer different bottom bracket sets which can be bought separately. A overview can be found at the products.

 

Are Tune chain rings 11-speed compatible?

Yes, all Tune chain rings are 11-speed compatible

Seatpost

Is it possible to re-cover the Speedneedle and what are the costs for it?

Yes it is possible. Please refer directly to Tune (Germany) or to the responsible distributor (outside of Germany).

With which torque is my Tune saddle fixed to the seat-post?

Due to the different clamping mechanisms it is not possible to specify an exact value. The torque is prescribed on behalf of the producer and needs to be respected.

Are the Tune saddles compatible with my seat-post?

Principally there are no restrictions except that the seat-post producer prohibits the mounting of carbon saddles.

The saddle rails of Tune saddles are high-oval, problems may occour with lateral clamp rings. Special clamp rings are very often offered. You can find more information in our product descriptions.

Whith wich seatposts is the Skyracer compatible?

The Skyracer is compatible with every regular seatpost.

The Skyracer has two rails with a diameter of 7 mm which are 43 mm apart. The clamping area is 75 mm long.

 

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How is the Skyracer recycled?

The SKYRACER is the world’s first carbon saddle that can be completely recycled.

The saddle consists of small single long-fiber carbon snippets, which are not held together as usual with epoxy resin, but by an aviation-approved thermoplastic material. For recycling, the connected carbon snippets are returned to their original state by means of „electrical fragmentation“ (similar to a lightning strike). Afterwards, the carbon snippets loosened by the thermoplastic can be used again for the production of a new Skyracer.

That’s not enough for us. This process is possible up to 5 times !! We guarantee a holistic recycling cycle.

Is the Skyracer comfortable?

Whether the Skyracer is the perfect saddle for you, we can not predict. But we can give you the necessary cornerstones so you can decide that for yourself.

The ergonomic shape of the SKYRACER deliberately minimizes pressure on your perineal area. The forces are introduced directly into both ischial tuberosities. The ischial tuberos are able to hold your weight to wear over a longer period of time. At the beginning, such saddles can look unfamiliar as when you descend from your bike in a different way. But you will quickly get used to this health-optimized form. Because the anatomically adapted specific concave-convex saddlecloth offers you two seating positions, relax / race.

The seats are generous and flat. With a width of 126mm the Skyracer fits on all common buttocks. In addition, the Skyracer, with the narrowest saddle point on the market and the curved side edges, combines lightweight construction with outstanding comfort.

How much clamping area does my seat post offer?

In our graphic you can see  how much room you have left for your support.

 

  lenght Min. lenght Max. lenght
Leichtes Stück 340 mm 160 mm 250 mm
  420 mm 240 mm 320 mm
Starkes Stück 340 mm 160 mm 250 mm
  420 mm 230 m 320 mm

 

 

Is it possible to shorten the seat-post?

Yes, the Starke Stück can be shortend. But please note, changes not made by Tune, render the warranty void. Due to safety reasons it is not allowed to shorten the Schwarze Stück.

Notubes

Is it possible to ride the NoTubes ZTR Crest 29“ rim with Road/Cross tires?

Yes, it is allowed to ride the ZTR Crest 29” rim with the following widths and pressures:
1.       Min. width of tire: 28mm
2.       Max. pressure (with tube):
a.       5.5 bar for 32mm
b.      6.0 bar for 30mm
c.       6.5 bar for 28mm

Thru-Axle

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

One Shot tire sealant

How do I use the ONE SHOT tire sealant?

The easiest way to use the ONE SHOT tire sealant is possible with our 60 ml bottle. The tire valve can be opened with the integrated from the bottle bottom. The sealant now can be inserted into the tire through the valve.

Why does my tire not seal properly with the ONE-SHOT liquid?

There could be many reasons for that.

The two main reasons usually are:

  1. The tire hasn’t been cleaned properly beforehand.

Often there are still substance residues in the inner rim of the tire, for example release agents, which prevent the sealing. In order to get the best possible result, we always recommend cleaning the tire with soapy water and to scrub the inside with a brush. For the tire to seal correctly, it should be free of any dirt and release agent particles.

After cleaning, leave the tire to dry completely. Firmly shake the bottle before use. When filling, please beware our recommended quantities. Do not mix the ONE-SHOT liquid with other products!

The installation with a compressor simplifies the „setting“ of the tire but is in no means necessary. The tire must sit well in the rim bottom. For this, only move the tire when it is inflated. For a better distribution of the liquid, swirl it well back and forth within the tire. Then inflate the tires to the desired pressure. After 24 hours, check the pressure again.

 

  1. The rim tape does not seal properly.

To install the rim tape, the rim must be grease-free. For this, clean the rim in advance with a bit of alcohol. Only then glue the rim tape to the rim bottom.

Our Hack: Insert a tube after gluing the rim tape in the tire. Inflate the tube and leave it for 15 minutes. Thanks to the tube the rim tape will lean itself perfectly against the rim bottom.

The rim tape as well as the valves need to be assembled properly according to our instructions. To do so you can watch the following video.

Is it possible to use the sealant in road bike tubular tires?

Yes it is possible to use the sealant in road bike tubular tires. It is also no problem for tubular tires with latex tubes.

Is it possible to use the sealant in latex tubes?

Yes it is possible to use the sealant in latex tubes, also with tubular tires..

How much do I use in a racing tire?

It is not easy to estimate the exact quantity of sealant needed for a racing tires. Too much of the sealant means extra weight, too little of the sealant might not seal. We recommend therefore to work around to the required amount. The amount may vary considerably according to the tire size and model.

Can I use CO2 cartridges?

 

Our sealant can be used with CO2 cartridges.

Is it possible to use ONE SHOT under -10°C?

We specify  -10°C / 14°F  as the coldest application temperature for the ONE SHOT sealant. Our sealant is functional up to this limit. ONE SHOT is even applicable up to -17°C / 1°F, but here the sealing period might stall due to the increase in viscosity.

How can I remove the ONE SHOT out of the tire and dispose of it afterwards?

ONE SHOT is biodegradable and can be removed completely and easily with the help of warm water, some soap and a brush.

Wheels

Which rims are tubeless suited?

All our clincher rims can be converted with a tape, tubeless valve and sealant to tubeless rims.

Can the labels on the Schwarzbrenner-rim be removed?

The discreet stealth-desing is integrated in the top layer of the rim and therefore can not be removed.

 

Where is the advantage of an asymmetric (offset) rim?

Well, it’s all about equalising spoke tension.

By offsetting the rim, the nipple holes are placed more directly in line with the centre of the hub, which allows a more even spoke length, and therefore tension of spokes between both sides of the wheel.

(It also improves the bracing angle of a dished wheel)

This is one of the reasons wheels are cross-laced.

 

The rim asymmetry enables an entire wheelset to be built, with almost uniform spoke tension.

This results in a stiffer and more stable wheelset, which is under less strain ( similar to the Evo boost idea).

 

How can I adjust the axial bearing play of my hub?

Adjust axial play on our tune hubs

The tune hubs are a plugged system. The hub axles have no collar for the bearing seat.

Tune hubs require low axial clearance for proper operation.

This game is set with shims. The shims are located under the right end cap. The necessary axial clearance is 0.15mm-0.20mm.

Basically, the axles of the hubs are always inserted from the left side into the hub. The left side is for example the brake disc side or always the side near the letter „t“ of the „tune“ logo on the hub body.

Prerequisite to find out the fitting plate thickness:

 

  • All bearings are firmly seated against the stop in the bearing seats.
  • The axle with the left end piece is inserted until it stops.
  • The freewheel set on the rear hub is seated without air firmly at its final position on the hub body.

 

Now measure the axle projection (a) to the bearing with a caliper gauge. Similarly, the insertion depth (b) of the right end cap is measured.

The dimension „a“ must always be a few tenths of a millimeter larger than the dimension „b“.

A descriptive guide and hints are available in our video. From 4:44 min

 

How do I mount the rim tape?

tune show you how to mount the rim tape:

Can I remove the lables of the Schwarzbrenner rims?

No, the sealth design is integrated in the top coat of the rim clear paint.

Which rims are tubeless suited?

All our clincher rims can be converted with a tape, tubeless valve and sealant to tubeless rims.

Double anodizing?

What is it?
Like the name says it, it means the wheel rim has been anodized twice.
What do I get from it?
.The double anodized compacts the surface and gives the rim a deep and durable finish.
.Concerning the brake flank, it means that it is black at the beginning and changes over time to a greying black.
.The double anodizing is not an extra process that will keep the brake flanks black.
.Our brake flanks have a sharp sawtooth profile. This means that the anodized surface rubs off with the mechanical stress of braking.


.The brake linings and their adjustment have an influence on the wear of the rim. We recommend the swissTop BXP brake linings. We those brake linings we achieved the best abrasion result after 1,500 km and 20,000 hm. For a uniform appearance and the best braking performance, the brake pads must be fitted parallelly.

How long (for how many kilometers) does the rim stay black?
.It is not possible to make an exact estimation or indication that would state exactly for how many kilometers the rim is going to stay black.
.There is and remains a mechanical strain on the material.
.Even the most up-to-date and expensive procedures cannot preserve the new neat surface of the rim.
.As usual, this depends on the load of the bike, the area of use, the brake linings, the adjustment of the brake linings, as well as the personal braking behavior.

You may ask yourself “Well, then I better should get a silver rim straight away!“
.Of course, it could be an option.
.However, the flank of the TSR 35 is not going to turn silver but a greying black.
.Like a more “mature” man your rim is just going to look more “mature”.
.So, it will stay attractive and doesn’t need any plastic surgery.

 

How does double anodization affect the TSR 35?

What is it?
Like the name says it, it means the wheel rim has been anodized twice.
What do I get from it?
.The double anodized compacts the surface and gives the rim a deep and durable finish.
.Concerning the brake flank, it means that it is black at the beginning and changes over time to a greying black.
.The double anodizing is not an extra process that will keep the brake flanks black.
.Our brake flanks have a sharp sawtooth profile. This means that the anodized surface rubs off with the mechanical stress of braking.


.The brake linings and their adjustment have an influence on the wear of the rim. We recommend the swissTop BXP brake linings. We those brake linings we achieved the best abrasion result after 1,500 km and 20,000 hm. For a uniform appearance and the best braking performance, the brake pads must be fitted parallelly.

How long (for how many kilometers) does the rim stay black?
.It is not possible to make an exact estimation or indication that would state exactly for how many kilometers the rim is going to stay black.
.There is and remains a mechanical strain on the material.
.Even the most up-to-date and expensive procedures cannot preserve the new neat surface of the rim.
.As usual, this depends on the load of the bike, the area of use, the brake linings, the adjustment of the brake linings, as well as the personal braking behavior.

You may ask yourself “Well, then I better should get a silver rim straight away!“
.Of course, it could be an option.
.However, the flank of the TSR 35 is not going to turn silver but a greying black.
.Like a more “mature” man your rim is just going to look more “mature”.
.So, it will stay attractive and doesn’t need any plastic surgery.

 

Accessories

Is it possible to ride the NoTubes ZTR Crest 29“ rim with Road/Cross tires?

Yes, it is allowed to ride the ZTR Crest 29” rim with the following widths and pressures:
1.       Min. width of tire: 28mm
2.       Max. pressure (with tube):
a.       5.5 bar for 32mm
b.      6.0 bar for 30mm
c.       6.5 bar for 28mm

How do I use the ONE SHOT tire sealant?

The easiest way to use the ONE SHOT tire sealant is possible with our 60 ml bottle. The tire valve can be opened with the integrated from the bottle bottom. The sealant now can be inserted into the tire through the valve.

Why does my tire not seal properly with the ONE-SHOT liquid?

There could be many reasons for that.

The two main reasons usually are:

  1. The tire hasn’t been cleaned properly beforehand.

Often there are still substance residues in the inner rim of the tire, for example release agents, which prevent the sealing. In order to get the best possible result, we always recommend cleaning the tire with soapy water and to scrub the inside with a brush. For the tire to seal correctly, it should be free of any dirt and release agent particles.

After cleaning, leave the tire to dry completely. Firmly shake the bottle before use. When filling, please beware our recommended quantities. Do not mix the ONE-SHOT liquid with other products!

The installation with a compressor simplifies the „setting“ of the tire but is in no means necessary. The tire must sit well in the rim bottom. For this, only move the tire when it is inflated. For a better distribution of the liquid, swirl it well back and forth within the tire. Then inflate the tires to the desired pressure. After 24 hours, check the pressure again.

 

  1. The rim tape does not seal properly.

To install the rim tape, the rim must be grease-free. For this, clean the rim in advance with a bit of alcohol. Only then glue the rim tape to the rim bottom.

Our Hack: Insert a tube after gluing the rim tape in the tire. Inflate the tube and leave it for 15 minutes. Thanks to the tube the rim tape will lean itself perfectly against the rim bottom.

The rim tape as well as the valves need to be assembled properly according to our instructions. To do so you can watch the following video.

Is it possible to use the sealant in road bike tubular tires?

Yes it is possible to use the sealant in road bike tubular tires. It is also no problem for tubular tires with latex tubes.

Is it possible to use the sealant in latex tubes?

Yes it is possible to use the sealant in latex tubes, also with tubular tires..

How much do I use in a racing tire?

It is not easy to estimate the exact quantity of sealant needed for a racing tires. Too much of the sealant means extra weight, too little of the sealant might not seal. We recommend therefore to work around to the required amount. The amount may vary considerably according to the tire size and model.

Can I use CO2 cartridges?

 

Our sealant can be used with CO2 cartridges.

Is it possible to use ONE SHOT under -10°C?

We specify  -10°C / 14°F  as the coldest application temperature for the ONE SHOT sealant. Our sealant is functional up to this limit. ONE SHOT is even applicable up to -17°C / 1°F, but here the sealing period might stall due to the increase in viscosity.

How can I remove the ONE SHOT out of the tire and dispose of it afterwards?

ONE SHOT is biodegradable and can be removed completely and easily with the help of warm water, some soap and a brush.

Porteur: How do I isntall the GoPro Adapter?

Can I put my bottle in the dishwasher?

Yes, our bottles can be put into the dishwasher.

Can I fill hot drinks in Tune bottles?

No, we do not recommend to fill our bottles with hot drinks.

Are tune bottles BPA- and Phathalat free?

Yes our bottles are BPA and Phathalat free.

Can I mount my gps above the steam with the PORTEUR?

Yes, technically it is possible to turn the Porteur and attach it with the two upper bolts of the steam.

Is our PORTEUR compatible with other stems?

Yes, it is.
But please note that mounting the PORTEUR affects the static of the stem.
So we can only guarantee a perfect function in combination with our stem „Geiles Teil 4.0 Oversize“

Porteur Zeichnung

 

How do I converty my tune rear hub?

In this video we show you how to convert your rear hub: https://youtu.be/y_64LsUqSZE