Single pivot brake set up

M

mrcpea

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Finding it difficult to get these set up correctly on the Raleigh banana.
Bolted them to the frame & secured the cable. When brake is pulled, the side with the screw adjuster stays against the rim & the other side retracts. Tried for ages different settings, positions etc. Still no luck.
There is a nut on the front of the brake, not sure what this does or how to set it.
Can someone please point me in the right direction. I'd be so grateful as getting frustrated.
Photo is of a similar design to what I've got.

Many thanks again,

Richard :)
 

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There shoould be 2 nuts on the front, the outer a domed nut, and a slim locking nut behind. These are to adjust the pivot so that the arms move freely without much wobble. The brake is probably turning a bit as you tighten the rear nut.
Get it as near as you can, then tap the top of the spring lightly where it is coiled on the side that is off the rim with some blunt instrument.
 
keithglos":1hc53wsx said:
There shoould be 2 nuts on the front, the outer a domed nut, and a slim locking nut behind. These are to adjust the pivot so that the arms move freely without much wobble. The brake is probably turning a bit as you tighten the rear nut.
Get it as near as you can, then tap the top of the spring lightly where it is coiled on the side that is off the rim with some blunt instrument.
Click to expand...

Or unhook the spring on the 'rim touching' side and pull/bend it out very slightly.

Welcome to the world of retro brakes ;)
 
As above really, centre it up as best as possible using the nut at the back of the brake...........then if you are an old hand like Keithglos use a "drift" which is a piece of metal to tap the spring on the open side to bodily move / rotate the brake a bit. Or if you have read the textbook then do it as Old ned. Use a screwdriver blade to unhook the spring on the close side and then with some needle nose pliers pull the spring towards you then re-hook the spring.. The brake will not move but the increased pull will "centre" the callipers...

As with most things retro there is usually a couple of ways of doing things :)

Shaun
 
Shaun, it's now 37 years since I last did all this. Also used to bend the brake arms so that the front of the brake block touched the rim first.

Keith
 
Yep, big screwdriver in the brake block slot wrapped in cloth and bend forward...............worked a treat to stop brake judder :)

35 years since I did it in anger..........

Shaun
 
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