Author Topic: Small end bush outer diameter  (Read 216 times)

Offline bikerjohndavies

  • John Davies, Bath, UK
  • A's Best Friend
  • ***
  • Join Date: Jun 2010
  • Posts: 232
  • Karma: 3
  • 1953 BSA A10 Super Flash Project
Small end bush outer diameter
« on: 17.12. 2019 12:50 »
Does anybody know the standard outside diameter for a A10 small end bush. I have 2 that I want to use but one measures about 7 thou larger OD than the other. Not sure if its just bad manufacturing or maybe one is oversized.
Good Advice
0
No reactions
1937 Panther M100 Rigid, 1946 Ariel Square 4, 1952 Norton Model 7, 1953 BSA A10SF (WIP), 1954 Ariel VH, 1961 Triumph T120R

Online JulianS

  • 1962 A10
  • Wise & Enlightened
  • *
  • Join Date: Mar 2017
  • Posts: 1064
  • Karma: 20
Re: Small end bush outer diameter
« Reply #1 on: 17.12. 2019 13:47 »
This table from the 1966 Alpha Bearings catalogue may help.

The A10 bush is SE109 right at the bottom ofthe photo.
Good Advice
0
No reactions

Offline a10rgs

  • Moving Up
  • **
  • Join Date: Mar 2019
  • Posts: 11
  • Karma: 0
Re: Small end bush outer diameter
« Reply #2 on: 17.12. 2019 14:02 »
Or have a look at BSA Service sheet 702
Good Advice
0
No reactions

Offline bikerjohndavies

  • John Davies, Bath, UK
  • A's Best Friend
  • ***
  • Join Date: Jun 2010
  • Posts: 232
  • Karma: 3
  • 1953 BSA A10 Super Flash Project
Re: Small end bush outer diameter
« Reply #3 on: 17.12. 2019 18:33 »
Thanks guys, the Alpha list is a great help. The service sheet 702 only shows the ID and I need the OD.  Have now measured them with a micrometer and the smaller one measures .878 so standard whilst the other is 10 thou larger. At least now I know what I have to work with. Cheers,
Good Advice
0
No reactions
1937 Panther M100 Rigid, 1946 Ariel Square 4, 1952 Norton Model 7, 1953 BSA A10SF (WIP), 1954 Ariel VH, 1961 Triumph T120R