Author Topic: A65 Thunderbolt 5 speed conversion  (Read 400 times)

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reedspeed

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A65 Thunderbolt 5 speed conversion
« on: 16 April, 2017, 20:58:43 »
I have a 1969 650 Thunderbolt. The bike badly needs a 5 speed transmission to enable it to be run on the Interstate highways here in Florida. What are my options?

Jim,
Vero Beacg, FL

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Re: A65 Thunderbolt 5 speed conversion
« Reply #1 on: 17 April, 2017, 10:00:33 »
What exactly is the problem? Is it undergeared for Highway use? If so, a gearbox sprocket with an extra tooth or two would solve the problem.
5 speed boxes (expensive!) generally don't affect top and bottom gear ratios - they just make the jump between ratios smaller.