Originally Posted by vw addict
I like how people at my shop refuse to use the torque wrench on say for example Truvative crankarms. Then the customer buys the bike, comes back in with it a week or so later with the bike in on hand, and the crank that fell off in the other. Then I have to deal with calling Truvative all the time for replacements beause the crank/BB interface is now all screwed up. So, no, you don't
need to use one.
WELL, while there is a torque spec for Truvativ cranks, the big problem is that even if you torque it right but do not remove the crank first, it will not bottom out against the stop. Then It will fall off a few days later. The torque is not great enough to get the crank moving, if it has not been fully torqued to begin with. Truvativ has a bulletin (or email) about this floating around (I got one). It is really a problem with their prop. power spline cranks, but also on the two piece cranks with the outboard BBs. We ended up removing and reinstalling every one that came in(after two failures and a talk with Truvativ.)
Get a torque wrench, they are not to expensive for a a decent one and any idiot can figure it how to work one. I prefer clickers because you cannot always hold it so you can read it.
Since Harris does not believe in torques spec, you might want to NOT bring them your Pinarello F4 or Scott CR1