The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: goldstar1955 on 18.06. 2017 17:44

Title: gearbox mainshaft end float.
Post by: goldstar1955 on 18.06. 2017 17:44

1949 plunger a/7 gearbox end float seems excessive . Comments please

Title: Re: gearbox mainshaft end float.
Post by: chaterlea25 on 18.06. 2017 20:40

Hi
Welcome to the forum *smile*
There should be zero endfloat on the gearbox mainshaft
The shaft is locked in position by the bearing, kickstart ratchet bush and nut on the righthand end
Endfloat could be a loose nut or a bad bush or bearing
You can see whats going on by looking through the oval inspection cover by the kickstart

John

Title: Re: gearbox mainshaft end float.
Post by: Greybeard on 18.06. 2017 20:45

 *welcome*

Title: Re: gearbox mainshaft end float.
Post by: Topdad on 19.06. 2017 10:58

Goldie, as GB says welcome to the forum ,there are many knowledgeable and friendly people here always ready to help.We're also quite nosey so how about a little info about yourself and your bike ,cheers Bob

Title: Re: gearbox mainshaft end float.
Post by: BSA_54A10 on 20.06. 2017 12:06

With a lot of older bikes the lip that retains the left side bearing gives way due to relentless pounding with big hammers to remove the clutch.
Found that out the heard way, then went through 3 or 4 cases to find a good one.