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Maybe a basic question but does anyone know the thread size for Reynolds Assault wheels with a 12mm thru axel ? Is it 1mm or 1.5mm ?

I just emailed Canyon about using my bike on a new Tacx Neo and got a reply that said...

"Unfortunately it is impossible. Do not use the Canyon road bike on a bicycle trainer"

 I'm not sure if they are trying to scare me or what ?? A very peculiar answer to say the least.

Any help would be appreciated as winter is fast approaching.

6 comments

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wellsprop [514 posts] 3 months ago
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Most manufacturers say not to use their bikes on turbo trainers. It's a warranty thing I assume (i.e. if it does happen to break, they won't help you). A lot of people are happy to use their carbon bikes on turbos - just not for sprints!

I assumed all 12mm thru axles have 1.5mm threads. ISO 261 has 1.5mm as the fine pitch for 12mm threads (pretty sure thru axles are ISO).

You can calculate the pitch if you count the threads and divide by the thread length, but this is a bit fiddly.

Here's team Katusha turbo training on their Canyons (admittedly they don't pay for their bikes themselves!).

I have a turbo - my Canyon doesn't go on it - simply because in the extremely unlikely event of something going wrong I don't want either my insurance or Canyon to say that I was using the bike incorrectly and not pay out.

 

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paulrattew [224 posts] 3 months ago
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The thread is dependent on the frame, not the wheels. The Kurt Kinetic website has a database of frame / thru-axle requirements. According to that canyon bikes use a 12mm axle with a fine (1mm) thread. See http://www.kurtkinetic.eu/traxles/

There's also a printable guide on that website so you can visually check what the axle that came with the bike is like.

You will need to use the right adaptors to get the canyon to fit right - take a look at the tacx website for details (as a starter, take a look here https://support.tacx.com/hc/en-us/articles/211920829-Does-my-142-12mm-axle-fit-on-my-trainer)

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RobPC [1 post] 3 months ago
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Thanks so much !! Got the adapters on order now.... 

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wycombewheeler [1237 posts] 3 months ago
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I wouldn't use a carbon bike on a turbo. Rollers yes turbo no. Frames is not designed to withstand the bending stresses that could be induced.

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fukawitribe [2050 posts] 3 months ago
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wycombewheeler wrote:

I wouldn't use a carbon bike on a turbo. Rollers yes turbo no. Frames is not designed to withstand the bending stresses that could be induced.

Fair enough - your bike, your choice. It has turned out to be a non-issue world-wide thus far though, from what I can see, and there are manufacturers who say it's fine with their own kit.. so it's not inherent in the material. Lets face it, it's not as though any bikes are designed specifically with the loads on a turbo and yet they still keep refusing to break.

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CanyonChloe [11 posts] 2 months ago
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Hi Rob,

Our carbon bikes are not designed to be ridden in a fixed position on a trainer as it creates stress in areas it's not supposed to. However, we would encourage people to use aluminium bikes on trainers as these can withstand the stresses in these areas. Hope that clears it up!  1

Please let us know if you have any further questions.

Thanks,

CanyonChloe