Author Topic: Carbon rail saddle tightening torque  (Read 1099 times)

BeR

Carbon rail saddle tightening torque
« on: February 05, 2025, 10:27:03 AM »
What tightening torque to do you use for these screws with a carbon rail saddle ?
« Last Edit: February 05, 2025, 02:26:21 PM by BeR »



Hokum

Re: Carbon rail saddle torque wrench
« Reply #1 on: February 05, 2025, 11:32:46 AM »
I use this one and like it a lot. There's clones on Ali with different ranges (Enlee "bike torque wrench" or somesuch)
https://www.amazon.com/BIKE-HAND-YC-637-BITS-Measurement/dp/B07MVLVGJ5

Mine seems to be precise enough when measured with another wrench.


edit: my bad. 6nm usually.
« Last Edit: February 06, 2025, 03:59:28 AM by Hokum »

BeR

Re: Carbon rail saddle torque wrench
« Reply #2 on: February 05, 2025, 02:27:25 PM »
I use this one and like it a lot. There's clones on Ali with different ranges (Enlee "bike torque wrench" or somesuch)
https://www.amazon.com/BIKE-HAND-YC-637-BITS-Measurement/dp/B07MVLVGJ5

Mine seems to be precise enough when measured with another wrench.

I missunderstand myself : I mean tightening torque in Nm.

SirBikealot

Re: Carbon rail saddle torque wrench
« Reply #3 on: February 05, 2025, 03:22:15 PM »
I missunderstand myself : I mean tightening torque in Nm.
as i only know carbon rails are almost always? the oval ones, so on my oval rail clamp 8nm is recommended. And that is what i went for.

jonathanf2

Re: Carbon rail saddle tightening torque
« Reply #4 on: February 06, 2025, 02:13:04 PM »
On that style seat post clamp, I only tighten screws until they are firm. I never over tighten and make sure I apply lots of carbon paste.

BeR

Re: Carbon rail saddle tightening torque
« Reply #5 on: February 07, 2025, 02:44:45 PM »
On that style seat post clamp, I only tighten screws until they are firm. I never over tighten and make sure I apply lots of carbon paste.

I agree for carbon paste. No idea of torque in N.m ?

ZacItaly15

Re: Carbon rail saddle tightening torque
« Reply #6 on: February 11, 2025, 07:29:22 AM »
I don't suggest to go over 8 NM

Ludo

Re: Carbon rail saddle tightening torque
« Reply #7 on: February 11, 2025, 08:21:31 AM »
5-8Nm is the recommended range on ELITA one seat post.
2 screw system, 5Nm seems enough for me, on 1 screw, 8Nm is needed

BeR

Re: Carbon rail saddle tightening torque
« Reply #8 on: February 12, 2025, 11:03:26 AM »
I have just seen that Specialized suggest 3,1 N.m front and 6,1 N.m rear.

3,1 N.m seems too little.

Ludo

Re: Carbon rail saddle tightening torque
« Reply #9 on: February 12, 2025, 01:11:18 PM »
And single bolt system at 13Nm, that looks high to me. I never venture that high!

ZacItaly15

Re: Carbon rail saddle tightening torque
« Reply #10 on: February 18, 2025, 10:03:21 AM »
I suggest to use some carbon paste (fibergrip) in the craddle of the seatpost