Training Thru-axle Adapter?

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08-17-21 | 11:17 AM

DirePenguin

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From: Central PA, USA

Bikes: 2014 Trek 8.3 DS, 2022 Trek Domane SL5 (Gen. 3)

Training Thru-axle Adapter?

I’ve got a 2018 Trek Domane ALR 5 and a CycleOps Fluid2 trainer which is currently set up for my older hybrid.

I’ve been considering buying the Thru-axle Adapter from Saris (https://www.saris.com/product/thru-axle-adapter) so I can train on the bike I ride the most.

Are there any dangers to worry about, here? Frame damage? Axle damage?

08-17-21 | 11:57 AM

Elvo

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Make sure you buy the right one accounting for thread pitch, thread length, and axle length.

08-17-21 | 12:19 PM

WhyFi

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Yeah, just confirm the specs. With my Trek, I got an axel from Robert Axel Project - they have a great axel finder utility - https://robertaxleproject.com/axle-finder-2/

08-17-21 | 01:41 PM

jaxgtr

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Quote:

Originally Posted by WhyFi

Yeah, just confirm the specs. With my Trek, I got an axel from Robert Axel Project - they have a great axel finder utility - https://robertaxleproject.com/axle-finder-2/

This is sound advice

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08-17-21 | 03:04 PM

Bah Humbug

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08-19-21 | 08:38 PM

GBK233

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Quote:

Originally Posted by DirePenguin

I’m not an authority on anything bike related, but I didn’t want to put more miles and wear/tear on my 2020 Defy….so I bought an older Trek to use on my Cycleops Hammer.

08-21-21 | 09:02 PM

mwdilday

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I have a Robert Axle Project thru axle for my trainer

08-21-21 | 10:21 PM

genejockey

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Quote:

Originally Posted by Elvo

Make sure you buy the right one accounting for thread pitch, thread length, and axle length.

For their wheel-on 'Snap' trainer, Wahoo sells you a kit of THREE thru axles, with 3 different threat pitches. As far as I can tell, they don't sell them separately, if you just happen to know what thread pitch you need.

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09-22-21 | 02:44 PM

DirePenguin

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From: Central PA, USA

Bikes: 2014 Trek 8.3 DS, 2022 Trek Domane SL5 (Gen. 3)

Thanks for all the suggestions, I ordered a trainer axle from The Robert Axle Project for my Domane ALR.

Just a question for you guys using one, why do they tell you to remove the drive-side axel end before heading back out on the road?

09-22-21 | 02:53 PM

#10

WhyFi

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From: TC, MN

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Quote:

Originally Posted by DirePenguin

Just a question for you guys using one, why do they tell you to remove the drive-side axel end before heading back out on the road?

Because you just don't need it. Odds are that nothing is bad is going to happen, but there's the possibility that you lose it or that it's one more step in changing a flat tire on the road (during which you lose it).

09-22-21 | 02:58 PM

#11

eduskator

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From: Québec, Canada

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Quote:

Originally Posted by WhyFi

What about the increased air drag caused by that thing sticking out?

09-22-21 | 10:47 PM

#12

MinnMan

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Quote:

Originally Posted by GBK233

I’m not an authority on anything bike related, but I didn’t want to put more miles and wear/tear on my 2020 Defy….so I bought an older Trek to use on my Cycleops Hammer.

Yeah, I have an older road bike on my trainer. But you may find a need for an adaptor anyway. For example, if you take your Defy in for a fitting, you'll need to put it on a trainer....