"Slacker" <
[email protected]> wrote in message
news:[email protected]...
> Michael Dart wrote:
>
> >> What is this clamp thing you're talking bout? I have the tool in large 1/2" ratchet wrench.
> >> Plus, I also have a torque wrench. Is this not good enough?
> >
> > You'll have to use a "metric-left handed-Crescent hammer" (big adj. wrench) but this is how I
> > do it.
> >
> >
http://www.pbase.com/image/16818276
> >
> > It keeps the tool from slipping and screwing up the splines. You can easily get the required
> > torque this way (which I believe is 'f*ing.tight' IN/LBS.)
>
>
> Sheesh, you're not kidding. I didn't realize that my torque wrench only
goes
> up to 250 lbs, not the 360 required. Dang, I know I changed my cranks at least two times before
> without the proper torque wrench... never had a problem, at least not yet :-(
>
> I nearly pulled a muscle last night installing the BB. I thought my
Thomson
> post was going to snap!
>
Are you sure you're reading your units correctly?. The service instructions I have for Shimano stuff
all specify 50-70 Nm (435-608 INCH-lbs). for bottom brackets This translates to about 50 FOOT-lbs at
the high end. That's way less than half scale on my 1/2" Craftsman torque wrench and to obtain it
takes about 35 lbs applied to the end of it's 17" (1.42') span . Hardly enough force to snap a
Thomson post.
When I install BB's, I find it much easier to do the final torquing with the bike on standing on the
ground instead of on a workstand. I hold the bike against me and bend over it to reach the BB on the
opposite side. That way I can easily press the tool against the BB with one hand while tightening
with the other. I've never had problems with it slipping this way or felt the need for some other
home-made tool.