Torque specs

David Kerber <ns_dkerber@ns_ids.net> wrote in news:MPG.1af4d03cf1976588989966
@news.ids.net:

Quoted message said:

Can somebody point to me a source for typical recommended
torque specs for things like chainring bolts, crank bolts,
etc? I've checked the usual source (sheldonbrown.com), but
can't seem to find it.

parktool.comtorque.shtmlOpen ↗
bike.shimano.combike.shimano.comOpen ↗

On Sat, 24 Apr 2004 20:28:54 -0400, David Kerber

ns_dkerber@ns_ids.net may have said:

Can somebody point to me a source for typical recommended
torque specs for things like chainring bolts, crank bolts,
etc? I've checked the usual source (sheldonbrown.com), but
can't seem to find it.

Someone else has already provided the link to Park. I'll
point out that they don't tell you some of the things you'll
eventually learn by experience. One of those is that a
torque wrench is a nice tool, but it doesn't really tell you
if a fastener is tight. It just tells you how hard it's
being turned. To get those two to coincide, everything has
to be done right; the proper spec has to be in use, the
fastener has to be in good condition and have clean threads,
the parts being tightened have to be in good condition and
properly aligned, and in some cases there may need to be a
lubricant on the threads or on the mating faces of the
pieces being joined. For square-taper cranks, I recommend
reading this page as well:

draco.acs.uci.edu8f.11.htmlOpen ↗

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In article <[email hidden]>,
rault00 @earthWEEDSlink.net says...

Quoted message said:

On Sat, 24 Apr 2004 20:28:54 -0400, David Kerber

ns_dkerber@ns_ids.net may have said:

Can somebody point to me a source for typical recommended
torque specs for things like chainring bolts, crank
bolts, etc? I've checked the usual source
(sheldonbrown.com), but can't seem to find it.

Someone else has already provided the link to Park. I'll
point out that they don't tell you some of the things
you'll eventually learn by experience. One of those is
that a torque wrench is a nice tool, but it doesn't really
tell you if a fastener is tight. It just tells you how
hard it's being turned. To get those two to coincide,
everything has to be done right; the proper spec has to be
in use, the fastener has to be in good condition and have
clean threads, the parts being tightened have to be in
good condition and properly aligned, and in some cases
there may need to be a lubricant on the threads or on the

Yes, I'm aware of the factors which affect proper fastening
force and torque. I've been doing bike maintenance for 30
years just by feel, but with my new bike, I wanted to be
sure I had things done to the proper spec.

Quoted message said:

mating faces of the pieces being joined. For square-taper
cranks, I recommend reading this page as well:

draco.acs.uci.edu8f.11.htmlOpen ↗

Thanks for the link.

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address before replying!

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There are two related links on the Park Tool web site,
See both parktool.comthread.shtmlOpen ↗ and
parktool.comtorque.shtmlOpen ↗

The second one does include a discussion of fastener
tension, which is what holds a fastener secure. Torque is
used to achieve tension, but it is the tension that is
really needed. There are no "Park Tool torque
recommendations", only listing from various manufacturers.