Author Topic: BSA A10 Gearbox problems  (Read 810 times)

Offline Gerry120

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BSA A10 Gearbox problems
« on: 20.01. 2015 20:31 »
Hi Everybody,
I hope anybody can help me. I am helping a mate out trying to sort out his gearbox on his 1962 BSA A10 Super Rocket. The problem we are having is that it jumps out of second gear and engages again in a matter of seconds when it's going up long hills for long period in second gear, it's ok on the flat and using all the gears. We have used another box that did not help we striped down the box checked all the parts including fitting a main bearing, and it still jumps out of gear.
Any ideas on what wrong.
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Offline wilko

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Re: BSA A10 Gearbox problems
« Reply #1 on: 20.01. 2015 20:50 »
Cush drive loose?
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Offline Gerry120

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Re: BSA A10 Gearbox problems
« Reply #2 on: 20.01. 2015 20:54 »
Hi There
I will check that out and let you know if that is the problem

Cheers
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Offline duTch

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Re: BSA A10 Gearbox problems
« Reply #3 on: 04.02. 2015 09:51 »

 Hiya Gerry, mine does that a bit in third, I think it may be worn selector plate, as the part of the cutout profile is a very fine 'point', and I'm thinking if it's worn may prohibit positive engagement- I think I have a piccie somewhere, will dig it out...
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online edboy

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Re: BSA A10 Gearbox problems
« Reply #4 on: 04.02. 2015 20:48 »
hi , i remember from years ago that if the box tries to jump out of gear but by holding down the gearlever it goes back in then it was the camplate adjuster needed a turn. worth a look.
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