Author Topic: Front Brake Pivot Pin  (Read 699 times)

Offline bl**dydrivers

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Front Brake Pivot Pin
« on: 01.03. 2013 02:59 »
Is there suppose to be movement?

I have a NOS 8" Front Brake Plate, with a new Stainless Steel Pivot pin and thought when sliding through the hole there wouldn't be much or little movement.

It seams to be fine when tightening the nut, but curious of this as I still haven't assembled the bike as of yet and don't have the original to compare.

Offline Beezageezauk

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Re: Front Brake Pivot Pin
« Reply #1 on: 01.03. 2013 08:50 »
The simple answer is "yes".

The idea of the movement is for the brake shoe centralisation system.

The procedure to set the brake up after replacing linings or shoes is to put everything back together but leave the pivot pin nut loose. The next step is to have the bike on the centre stand with the front wheel off the ground (or hold the wheel spindle in a vice) and spin the wheel manually as fast as possible.  Now put the front brake on reasonably hard and the shoes will centralise themselves automatically.  Whilst the brake is held in this position tighten the pivot pin nut and the brake shoes will be centralised.  Now you can release the brake lever and the brake will be more efficient.

Beezageezauk.

Offline bl**dydrivers

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Re: Front Brake Pivot Pin
« Reply #2 on: 03.03. 2013 03:52 »
Thanks for the info geeza, I got worried there for a moment.

Online bsa-bill

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Re: Front Brake Pivot Pin
« Reply #3 on: 03.03. 2013 09:46 »
ask me who thought it would be a good idea to shim the pin with copper pipe -- then again please don't
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline Beezageezauk

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Re: Front Brake Pivot Pin
« Reply #4 on: 03.03. 2013 18:33 »
Hi Bill,

Reading between the lines....do I take it that this topic has already been discussed?  If so, I have either missed it or it must have been at least 2 beers and 3 whisky's ago.

If it is what I'm reading into it I think the term "Old Dog" and "New Tricks" springs to mind.

No offence meant matey!!

Beezageezauk.

Online bsa-bill

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Re: Front Brake Pivot Pin
« Reply #5 on: 03.03. 2013 18:44 »
Hi  Beezageezauk

Think this has been discussed or at least the floating shoe modification, but not in time to prevent a slightly younger dog inventing a new trick that nullified BSA best practise.
seemed like a good idea at the time *smiley4*
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco