Author Topic: IMTOS universal carbon thru axle  (Read 21969 times)

Bovelius

Re: IMTOS universal carbon thru axle
« Reply #15 on: January 30, 2026, 01:20:49 PM »
I ordered the set of thru axles, just waiting for them to arrive.
Will give an update when tested.

Sander2177

Re: IMTOS universal carbon thru axle
« Reply #16 on: January 31, 2026, 10:36:08 AM »
I ordered the set of thru axles, just waiting for them to arrive.
Will give an update when tested.


Hey man ok
How long is delivery?

Bovelius

Re: IMTOS universal carbon thru axle
« Reply #17 on: February 10, 2026, 08:36:41 AM »
I just got the thru axles in the mail today, the shipping took 15 days to Europe.
Had to pay an extra 50 euro in import tax before the delivery.

It seems like the axles are  to short so when installing the correct thread socket to get the right length the drive side of the hub will be resting on the threads of the thru axle.

Im no mechanic so don't know if it will be an issue but it doesn't feel alright.

Pm'd the seller on AliX but the seller states it's not an issue.
The seller replied within minutes so great support.

Weighted 28gr for the pair with the correct threads installed, changing the thread socket is very easy.
« Last Edit: February 10, 2026, 09:52:06 AM by Bovelius »

wanted100

Re: IMTOS universal carbon thru axle
« Reply #18 on: February 10, 2026, 09:06:35 AM »
I just got the thru axles in the mail today.
Had to pay an extra 50 euro in import tax before the delivery.

It seems like the axles are  to short so when installing the correct thread socket to get the right length the drive side of the hub will be resting on the threads of the thru axle.

Im no mechanic so don't know if it will be an issue but it doesn't feel alright.

Made an report on AliX but the seller states it's not an issue.

"resting on the threads of the thru axle" you dont need all the threads into the frame.. :P

Dark17

Re: IMTOS universal carbon thru axle
« Reply #19 on: February 10, 2026, 09:16:20 AM »
I got mine thru DFS. Pretty much the same as Imtos.

Had to contact DFS because the heads they send is so random and it only include 1 1*1.0*20mm and no 12*1.0*24mm which i needed for the rear axle. DFS said that they will send 24mm to fit my rear axle length. Anyone have experience on using them already?

toxin

Re: IMTOS universal carbon thru axle
« Reply #20 on: February 10, 2026, 11:11:39 AM »
I just got the thru axles in the mail today, the shipping took 15 days to Europe.
Had to pay an extra 50 euro in import tax before the delivery.

It seems like the axles are  to short so when installing the correct thread socket to get the right length the drive side of the hub will be resting on the threads of the thru axle.

Im no mechanic so don't know if it will be an issue but it doesn't feel alright.

Pm'd the seller on AliX but the seller states it's not an issue.
The seller replied within minutes so great support.

Weighted 28gr for the pair with the correct threads installed, changing the thread socket is very easy.

Does the thread go all the way through? Technically, thru-axles aren't really axles in the engineering sense. The hub has its own axle that actually does the work of an axle. The endcaps press onto the axle and then sit on the fork and frame dropouts, so the load path to the wheel shouldn't include the thru-axle. But the thru-axle is part of what gives the fork lateral stiffness, so the bending forces transferring from the fork into the thru-axle could be problematic.

Sander2177

Re: IMTOS universal carbon thru axle
« Reply #21 on: February 10, 2026, 03:57:19 PM »
Does the thread go all the way through? Technically, thru-axles aren't really axles in the engineering sense. The hub has its own axle that actually does the work of an axle. The endcaps press onto the axle and then sit on the fork and frame dropouts, so the load path to the wheel shouldn't include the thru-axle. But the thru-axle is part of what gives the fork lateral stiffness, so the bending forces transferring from the fork into the thru-axle could be problematic.

Have a look at this FB profile from Jason Zhang at imtos.
Test videos etc may answer some questions
https://www.facebook.com/share/188YrVXhGq/?mibextid=wwXIfr

toxin

Re: IMTOS universal carbon thru axle
« Reply #22 on: February 10, 2026, 04:22:47 PM »
Those tests are not good. They brace the axle in a jig on the carbon shaft, not the thread insert. Maybe that's the protocol for standard thru axles and it could normally be valid, but this is a whole different case. It's not the carbon shaft that's the questionable part here, they need to be testing these by loading the thread insert and I'm sure the engineers would be aware of this.

Sander2177

Re: IMTOS universal carbon thru axle
« Reply #23 on: February 10, 2026, 04:54:38 PM »
Those tests are not good. They brace the axle in a jig on the carbon shaft, not the thread insert. Maybe that's the protocol for standard thru axles and it could normally be valid, but this is a whole different case. It's not the carbon shaft that's the questionable part here, they need to be testing these by loading the thread insert and I'm sure the engineers would be aware of this.


They lock Thru Axles into a jig and use a torque wrench to failure.
Results below

toxin

Re: IMTOS universal carbon thru axle
« Reply #24 on: February 10, 2026, 06:23:57 PM »
that is testing for twisting loads from tightening.

Evaso_CC

Re: IMTOS universal carbon thru axle
« Reply #25 on: February 11, 2026, 01:22:25 AM »
So that thread is just screwed onto the axle? I dunno man, don’t trust this.

No doubt it requires careful assembly on use of anti seize or torque wrench. For an experienced mechanic it is fine, but I see problems for the average rider, who maybe does not pay as much attention…

And for me, carbon thru axles present too many compromises for the sake of saving maybe 25 grams versus lightweight alloy thru axles, especially when you have to change the wheel out on a ride. Using two tools or using specific torque is not going to happen…
« Last Edit: February 11, 2026, 01:29:35 AM by Evaso_CC »

glepore

Re: IMTOS universal carbon thru axle
« Reply #26 on: February 11, 2026, 07:34:41 AM »
No doubt it requires careful assembly on use of anti seize or torque wrench. For an experienced mechanic it is fine, but I see problems for the average rider, who maybe does not pay as much attention…

And for me, carbon thru axles present too many compromises for the sake of saving maybe 25 grams versus lightweight alloy thru axles, especially when you have to change the wheel out on a ride. Using two tools or using specific torque is not going to happen…
Yeah. This. Ti axles are close enough in weight. I just wish Chaser would put their hex on the other end...

Dark17

Re: IMTOS universal carbon thru axle
« Reply #27 on: February 11, 2026, 01:46:32 PM »
Now I am weary of these carbon thru axles I ordered thanks to you guys. Might sell mine lol

toxin

Re: IMTOS universal carbon thru axle
« Reply #28 on: February 11, 2026, 01:59:35 PM »
I've painted their tests as questionable, but I do think Imtos know what they're doing. Your level of worry should probably depend on your weight.

Dark17

Re: IMTOS universal carbon thru axle
« Reply #29 on: February 11, 2026, 06:25:10 PM »
DFS said that there’s no weight limit for this axles. And I tested them on race yesterday and they hold quite well. Still worried because of what you guys said lol