The pin stops the nut turning In your photo the nut has tightened with the flat of nut opposite the pin that can often happen but if the nut wanted to turn the point of the nut would touch the pin preventing further turning The Brampton’s on my rapide never had that pin I have thought of fitting one but the axle tightens up ok so never have
FF: Forks Brampton fork details
- Thread starter craig
- Start date
First photo is of 3 series B's outside the factory with test riders and I know the date is late 1948. If you zoom in you can see all 3 have the short brake cable on the LH (primary) side.
The second photo is a factory photo of an early Rapide and you can see the long cable thread between the Brampton tubes and down the right side.
Third photo is from a 1947 magazine. Again you can see the long brake cable down the RH side.
I think the change of sides came in with the Girdraulics as those are solid and so you cannot pass the long brake cable through the middle of them. I don't know if they then used the same swapped over Girdraulic cable system on the later series B bikes.
Note if you use the correct earlier system Craig then the RH adjuster will move away (downwards) from the lower link on the RH side when you apply the brake rather than upwards which also helps with the clearance to the link on the RH side. There doesn't appear to be as much of a clearance problem with the LH link.
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Thank you for the photos. Great reference.
I resolved my link clearance issue by reducing the diameter of the cable adjuster knurled portion.
I prefer the heavier housing spares cable going to the left fork, this adjuster solution works for me.
Here is another Brampton reference cable to the right side.
I resolved my link clearance issue by reducing the diameter of the cable adjuster knurled portion.
I prefer the heavier housing spares cable going to the left fork, this adjuster solution works for me.
Here is another Brampton reference cable to the right side.
The pin does stop the nut rotating. It's not a close fit but it stops the nut rotating when you undo the tommy bar. It only just catches the tip of the nut. Well at least it does on my Bramptons which are an original fit and have been in my possession for over 50 years. I think the tapped hole may be a hangover from Series A front stand/mudguard stay and normally has nothing in it.
The pin should stop the nut rotating. It does on my Bramptons which are an original fit and been in my possession for over 50 years and the nut has not changed or been replaced. It's not a tight fit but just picks up on the tip of the nut as it tries to rotate. I think the tapped hole is redundant and a hangover from Series A forks that had a front stand/mudguard stay
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Craig. The threaded hole is for the rear stay of the guard that was used to raise the front wheel on a Series A and Meteor. The pin should stop the axle nut from rotating, have you fitted the thick washer? The Series B balance beam has a major bend to clear the tubes and WILL accept the longer cable on the LHS if all is aligned and won't foul the spindle nut. Twenty three years of riding a B.