Hey Gerard. On my nice pretty new P3C (thank you, I love it), there is a little sticker by the seatpost that says, “MAX 4 NM”
4 nm is nowhere near tight enough to hold the seat post up. After putting about that much on the bolts (hand tightening) at the shop, it slipped right away in the trainer. Then, on the road, with a bit more torque, it would slip every time I went over a bump, so I had to keep tightening. Now I don’t know what torque I have it at, but it’s certainly more than 4 nm.
Is this going to cause a problem/failure? 4 nm on ANY type of seat post doesn’t make sense to me.
Careful. It is 4Nm greased, which is vastly more than 4Nm ungreased. So make sure the bolts are thoroughly greased, then set them at 4Nm. If you want, you can go to 6Nm without any problem, we just don’t usually see the need for anything past 4Nm.
No, that is greased too but we have determined a torque that high is not necessary. The problem is also that most torque wrenches are not that accurate, so we prefer to be safe rather than sorry.