G: Gearbox (Twin) Double Backlash
- Thread starter vibrac
- Start date
Ah but Vic, when we were young and perfectly formed (well almost) some of us were trying to beat the times of other makes over standing start quarter miles, half miles or killometers. That tenth of a second was important to us at that stage.
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Yes the 5 speed boxes are great for racing........especially with a dry multi plate and belt drive........big weight saving on the primary parts over stock. I liked the tall first gear, which gave you a great amount of acceleration off the blocks........certainly with a light weight bike.
Save time in gear change maybe but was done so as not to “miss” a gear change when trying to shift fast
Visited a long time Victorian Vincent man today he pulled out some parts he had removed from speedway engines /bikes he had bought over the years. These were very common modifications couple of examples pictured Also remember Phil Irving was often at races and I think built the first postwar Twin speedway sidecar in Victoria I forget the exact details but I know it’s in his biography he also names the builders of other early builders/riders my rapide crank cases came from one of these machines Happy Days
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Must admit , When I did mine , I thought that's going to knock a few years off it's life,
But still going !, Not riding very hard now though
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But still going !, Not riding very hard now though
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