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Bsa B40 Trials Gearing

Featured Replies

Hello,

i found out my bsa does not have the WD gearbox where can i find the proper gears?

what gears are in a road bsa? mine are 18/32 23/27 27/23 26/17

anyone knows who makes alloy barrels for the bsa?

best regards bob

As lons as you gear it low enough the WD gearbox is not necessary and tends to allow the use of 1st only due to the gap between that and 2nd. We always used B44 barrels shortened to suit and turned round on a lathe mainly for cosmetic purposes

Ian Teamferret

  • Author

my bike was geared very low but its real slow between sections, i would like to have 1 and 2nd for trials and a higher topspeed

best regards bob

There is a C15/B40 wide ratio gearbox on Ebay now. Look under BSA C15 trials.

Pat.

  • 1 month later...
  • Author

finally got a propper trials gearbox,

now i just have to put it in my engine, anything to look out for?

best regards bob

Hello,

i found out my bsa does not have the WD gearbox where can i find the proper gears?

what gears are in a road bsa? mine are 18/32 23/27 27/23 26/17

anyone knows who makes alloy barrels for the bsa?

best regards bob

Hi Bob,

Keep your eye on ebay, there was a wide ratio C15 gear box cluster on there recently.

Hi, came across this thread while searching for a gearbox for my c15 sg which im restoring.If you have a road ratiod gearbox for a "g" model I would be interested in buying it.You can contact me on tombobb@hotmail.co.uk.

Regards Bob

  • Author

Hi, came across this thread while searching for a gearbox for my c15 sg which im restoring.If you have a road ratiod gearbox for a "g" model I would be interested in buying it.You can contact me on tombobb@hotmail.co.uk.

Regards Bob

hey i have no idea what gearbox it is it comes out of a B40 engine

best regards bob

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