Brake caliper recessed nut question
11-26-17, 09:33 AM
#1
I never finish anyth
Thread Starter
Brake caliper recessed nut question
I'm just trying to get this right and learn a little as I go. This is my first build on a carbon frame.
I'm swapping Campy components from a CAAD8 frame to a Merckx carbon frame, and the rear brake bridge is quite a bit thicker than the alloy bridge. How many threads should be engaged to be sure of a safe installation of the brake caliper?
Should I be looking for a 1/4" or 6mm insertion depth? Is that sufficient?
I have some longer recessed nuts, and I can turn them down on the lathe if they're too long.
I'm swapping Campy components from a CAAD8 frame to a Merckx carbon frame, and the rear brake bridge is quite a bit thicker than the alloy bridge. How many threads should be engaged to be sure of a safe installation of the brake caliper?
Should I be looking for a 1/4" or 6mm insertion depth? Is that sufficient?
I have some longer recessed nuts, and I can turn them down on the lathe if they're too long.
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Dale, NL4T
Dale, NL4T
11-26-17, 11:25 AM
#2
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First reply, from a non mech! (altho I did run a car repair shop (mine) for 14 years)
I'd feel fine if there were 3 full threads. I don't think there's much stress pulling against the nut.
I'd feel fine if there were 3 full threads. I don't think there's much stress pulling against the nut.
11-26-17, 05:28 PM
#4
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The general rule for thread overlap is a minimum of 4 threads of engagement. I would feel better with at least 5 or 6 though on my bikes. Andy
11-26-17, 05:38 PM
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It's only the rear brake... how much force does it see before the wheel locks up?
I only use mine for handling balance into tight turns.
I only use mine for handling balance into tight turns.
11-26-17, 06:00 PM
#6
I never finish anyth
Thread Starter
I got everything to fit. The front caliper had 5mm or thereabouts of insertion. I had to shorten a 30mm recessed nut down to 26mm to get a good fit in the rear, so I have 5mm of insertion there too.
On to the next issue.
On to the next issue.
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Dale, NL4T
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