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allen screws and torque
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October 22nd 18, 04:53 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 4,018
allen screws and torque
On Sun, 21 Oct 2018 20:40:02 -0700 (PDT),
wrote:
Offhand, if the bolt was loose AFTER applying maximum torque, you've
probably stripped the aluminum threads in the brake and shifter body.
Hint: Stay away from the maximum torque.
Yeah, I thought so too. After doing them the maximum torque
But they aren't loose! And it isn't threads into the aluminium frame.
It is a clamp. This isn't to say it couldn't have been damaged just as well.
Steel nut or aluminum nut?
Take it apart and look at the threads. Any damage? Any teeth
missing?
Is the bolt a tight fit into the nut (without the brake body to get in
the way), or is it flopping around loosely?
Did you grease, lube, anti-seize, or Teflon tape the threads? That
will decrease the maximum torque.
Anything unusual on the handlebars, such as clamping the brake levers
over bar tape or gum brake covers?
Any tears or cracks in the stainless(?) steel strap where it mates
with the break body bolt?
A 10x binocular microscope really helps with mechanical inspections:
http://www.learnbydestroying.com/jeffl/pics/microscopes/Olympus%20SZ30/slides/SZ30-01.html
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Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060
http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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