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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="timetraveller" data-source="post: 75936" data-attributes="member: 456"><p>Two things; first the springs have arrived and the first pair of 30 lbs/inch springs are now in the post to chrislaun. I have notified Greg but he will probably not get the message until the Australians are up and about. The second point refers to a few words in hadronuk's page copies above. There it states that in order for a speed wobble to occur the bike must be leaning over. NOT SO. When mine developed at Cadwell I was about two thirds of the way down the top straight, flat out at about 100 mph and the bike was definitely bolt upright with me as low on the tank as I could get. Passing over the joint in the tarmac surface started it but the inertia of me and the bike probably kept it going. Later examination of the track surface showed a whole line of black curves, first one way and then the other, where the front tyre had skidded as the tyre could not rotate, with the handlebars at full lock each side. There is a lot of kinetic energy in about 600 lbs of mass at 100 mph and it takes some time to dissipate, even when making black skid marks on a tarmac surface.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 75936, member: 456"] Two things; first the springs have arrived and the first pair of 30 lbs/inch springs are now in the post to chrislaun. I have notified Greg but he will probably not get the message until the Australians are up and about. The second point refers to a few words in hadronuk's page copies above. There it states that in order for a speed wobble to occur the bike must be leaning over. NOT SO. When mine developed at Cadwell I was about two thirds of the way down the top straight, flat out at about 100 mph and the bike was definitely bolt upright with me as low on the tank as I could get. Passing over the joint in the tarmac surface started it but the inertia of me and the bike probably kept it going. Later examination of the track surface showed a whole line of black curves, first one way and then the other, where the front tyre had skidded as the tyre could not rotate, with the handlebars at full lock each side. There is a lot of kinetic energy in about 600 lbs of mass at 100 mph and it takes some time to dissipate, even when making black skid marks on a tarmac surface. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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