Front Brake Pivot Pin

[bl**dydrivers]

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.

[Beezageezauk]

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.

[bl**dydrivers]

Thanks for the info geeza, I got worried there for a moment.

[bsa-bill]

ask me who thought it would be a good idea to shim the pin with copper pipe -- then again please don't

[Beezageezauk]

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.

[bsa-bill]

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