Understanding thru axle lengths...

Discuss light weight issues concerning road bikes & parts.
Eleven21
Posts: 98
Joined: Sun Jun 25, 2017 8:08 pm

by Eleven21

Apologies in advance if this sounds like a silly question I'm looking at purchasing an Enve AR/GRD disc fork. I'd be very grateful if anyone could confirm the correct length 'thru-axle' I'd need. I'm new to 'discs' and after some reading I think I'm correct in saying there are several axle lengths for the rear drop outs and one needs to take into account how thick the frame's rear drops are.

Perhaps I'm over thinking this and any 100mm x 12 thru axle will work?

Hope you can help.

wingguy
Posts: 4317
Joined: Thu Mar 08, 2012 11:43 pm

by wingguy

The fork will come with an axle, so don’t worry about it..

In general for aftermarket Thru’s you need to know thread pitch as well as length and diameter.

I’m not 100% sure but I think aftermarket axles for the Enve fork are tricky to get because they use a very specific dropout thickness and countersink. Send an email to Enve to get a proper answer tho.

by Weenie


dcorn
Posts: 340
Joined: Thu Oct 05, 2017 4:21 pm
Location: NoVA

by dcorn

robertaxleproject.com

This site has tons of info about thru axle lengths and options to buy.

User avatar
Alexbn921
Posts: 309
Joined: Wed Apr 10, 2019 6:39 pm

by Alexbn921

dcorn wrote:
Mon Dec 09, 2019 4:40 pm
robertaxleproject.com

This site has tons of info about thru axle lengths and options to buy.
:up:
This 100%

Eleven21
Posts: 98
Joined: Sun Jun 25, 2017 8:08 pm

by Eleven21

dcorn wrote:robertaxleproject.com

This site has tons of info about thru axle lengths and options to buy.
Many thanks - I came across this site over the weekend hence my concern that I need the correct axle.

dcorn
Posts: 340
Joined: Thu Oct 05, 2017 4:21 pm
Location: NoVA

by dcorn

I hear ya, I went to buy an axle to fit my cross bike to tow a trailer and got confused as hell. Doesn't help that my Crux has a non-standard 12x135mm thru axle hub, so that made things super complicated.

If you don't get a TA with your fork, I'd recommend the DT Swiss RWS. They came on both my TA bikes and its the best and easiest to use that I've seen.

Eleven21
Posts: 98
Joined: Sun Jun 25, 2017 8:08 pm

by Eleven21

Thanks for the tip

TobinHatesYou
Posts: 4685
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

My issue with DT Swiss RWS is they certainly don't make it easy for end-users/consumers to order specific TAs. They don't list all available options / part numbers on their website.

Where's the 1.75mm thread pitch options? I know they exist...

szazbo
Posts: 84
Joined: Mon Sep 18, 2006 6:26 am

by szazbo

I went through the same thing with the ENVE GRD and Road Disc fork, Yes they come with thru axles, but if you are larger like I am, the axle flexes and you can hear disc rub when standing. ENVE uses a wierd length, I believe it is 127mm. Robert makes a 125 and a 130mm. DT RWS makes a 125mm. Now Paragon machine has taken the DT RWS and made their own 127mm axle so you can have a correct ENVE length RWS thru axle. Available on their website, but it is the fixed handle, not the removable one. I purchased the Paragon and also a Robert and on the Robert they include a plastic 2mm washer with the 130mm axle to make it the correct length. I dont get axle flex with either the Paragon/DT RWS or the Robert Axle.
https://www.paragonmachineworks.com/rep ... -fork.html

kode54
Posts: 1678
Joined: Tue May 23, 2006 9:39 pm

by kode54

Chris King has Robert Axle Project axles in colors to match their hubs and headsets.

With the Enve gravel fork, I use a DT Swiss RWS axle. measure the total length from the end to end. Pitch is 1.5 IIRC.
- Factor 02 Disc + DA9170 + Enve 4.5AR CK CL hubs
- Moots Vamoots Disc RSL Titanium + DA9170 + Enve 3.4AR CK CL hubs
- Parlee Altum + DA9150 + Enve SES 4.5 Ene carbon hubs
- Argonaut Spacebike 2.0 + DA9170 + Enve SES 5.6 DT Swiss 240 CL hubs

kode54
Posts: 1678
Joined: Tue May 23, 2006 9:39 pm

by kode54

TobinHatesYou wrote:
Tue Dec 10, 2019 9:46 am
My issue with DT Swiss RWS is they certainly don't make it easy for end-users/consumers to order specific TAs. They don't list all available options / part numbers on their website.

Where's the 1.75mm thread pitch options? I know they exist...
Agreed. They actually have more than what's shown on any website.
- Factor 02 Disc + DA9170 + Enve 4.5AR CK CL hubs
- Moots Vamoots Disc RSL Titanium + DA9170 + Enve 3.4AR CK CL hubs
- Parlee Altum + DA9150 + Enve SES 4.5 Ene carbon hubs
- Argonaut Spacebike 2.0 + DA9170 + Enve SES 5.6 DT Swiss 240 CL hubs

Eleven21
Posts: 98
Joined: Sun Jun 25, 2017 8:08 pm

by Eleven21

Thank you very much again for all the advice. Before I posted this, had assumed I’d get laughed at for asking “...such a ridiculous question!”

jfranci3
Posts: 790
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

TobinHatesYou wrote:
Tue Dec 10, 2019 9:46 am
My issue with DT Swiss RWS is they certainly don't make it easy for end-users/consumers to order specific TAs. They don't list all available options / part numbers on their website.

Where's the 1.75mm thread pitch options? I know they exist...
DT does do a lot of OEM specific skewers. For 1.75 x 122/123 you need to order via a Trek dealer (or a dealer on ebay). The problem is really the industry as a whole not adopting common pitches or giving a common coding system. A lot of these bad habbits came from the MTB world which had some legit reasons for this incompatibilty, like different dropout thicknesses and non-builtin nuts. Anyway, just order the J&L one on ebay for $20.

bm0p700f
in the industry
Posts: 5132
Joined: Sat May 12, 2012 7:25 pm
Location: Glermsford, Suffolk U.K
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by bm0p700f

Carbon ti do every option too.

TobinHatesYou
Posts: 4685
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

Yes I have Robert Axle, Carbon-Ti and Shift-Up 1.75mm TAs. I was specifically bemoaning DT Swiss's website and distribution. I know I can order a Bontrager branded RWS too in both normal and "stealth" version.

by Weenie


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