Torque for seatpost clamp
Moderator: robbosmans
You can use less torque, particularly if using carbon assembly paste. If it's a normal carbon post I wouldn't worry too much. For ww gear, I usually go under the specified amount.
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Correct torque will depend upon the post to tube contact / shape etc.
Great advice above - use some carbon assembly paste. I can typically get away with just under 5Nm on my seatpost clamps (I weigh 80kg and ride over plenty of bumps BTW) .....
Great advice above - use some carbon assembly paste. I can typically get away with just under 5Nm on my seatpost clamps (I weigh 80kg and ride over plenty of bumps BTW) .....
torque values are also specific for certain bolt/thread types. also all values are given FOR DRY BOLT. lubricating it , decrease torque by 25-30% ( for M4 & M5 bolts ).
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Mark Twain
I can be wrong, and have plenty of examples for that
Mark Twain
I can be wrong, and have plenty of examples for that
Tubby16 wrote:I torqued it to 6nm (the clamp notes 6.87) but maybe less?
MAX torque stamped on your seat clamp is not RECOMMENDED torque. Lots of exiting discussion on torque values on many forum threads ....use search bar. Start with 4 Nm and check if fit is fixed. If not, go up to 5 Nm and check again... do not exceed 6.87 which is the rated MAX torque value of your bolt. If you reach max torque and post is not fixed, then the parts you are trying to mate are a no go.
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My ww carbonice Eva clamp has a max torque rating of 4nm only, and says I probably need less.
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I stripped the thread of two 5mm alu clamps (probably very soft alu in this specific clamp).
I drilled them and re-threaded both to 6mm.
Honestly, this was better.
I don't use carbon paste, but it's zero issues with sliding seatpost.
Btw, for example, Ax has a maximum torque of 4Nm, some have 5Nm and some have 6Nm.
I drilled them and re-threaded both to 6mm.
Honestly, this was better.
I don't use carbon paste, but it's zero issues with sliding seatpost.
Btw, for example, Ax has a maximum torque of 4Nm, some have 5Nm and some have 6Nm.
Bikes:
Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)
Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.
Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)
Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.