So I finally got an old beam style torque wrench because the click type that I have scares me. The click type seem like they can go out of calibration quite easily. Anyway, I'm tightening a bolt on my seat post (manufacturer spec is 9 Nm) and my beam wrench barely reads any torque (maybe 0.5 Nm) and I feel like I've tightened the bolt at least 2 full rotations. It feels like the bolt head is starting to strip a little but I still haven't reached any relative torque (according to the beam wrench).
I start thinking about how I'm not registering much torque on the wrench, even though I know i'm putting a lot into it. I realize that I grease pretty much every bolt on my bike (finish line teflon grease), this is probably affecting every torque value on every bolt. I've heard that friction accounts for about 85%-90% of the torque value on a bolt, so adding grease to a bolt probably affects the proper torque spec by a ton. I think i'm just going to do "good-en-tight" from now on, even on carbon parts. Using a torque wrench on a greased bolt (since most of the bolts are 4-5mm I feel like they need grease) seems like you're just asking to over tighten something.
Anybody else think the same or different?