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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Advice on SEVERE tank slap
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<blockquote data-quote="mach1ne" data-source="post: 317" data-attributes="member: 259"><p>Hello Krautrapide and John,</p><p>Thanks for the replies. The pivot pins and bushes are good and the forks move freely , with the spring units disconnected, with no noticeable sideways or back to front play. As you suggested John, the tyre pressure should have been 5-7 PSI higher, according to the shop I purchased the tyre from. I don't have the bike here at the moment to check the recommend pressure on the side of the tyre. I also may have had to have the damper turned down tighter. I spoke to Terry Prince ( a reputable parts supplier and developer, over many years) and his suggestions were, wheel alignment, 21" wheel with standard width tyre and also a hydraulic steering damper.</p><p>What I'm trying to achieve here, is to get some understanding of the mechanism of the tank slap, so I can have some confidence that have been able to change the bike enough to ensure it doesnt happen again. At 55 , I don't bounce down the road particularly well.</p><p>On a side note, the club member that took me to hospital, on the day I came off, is also a Vincent rider, who's Rapide also did exactly the same thing in fairly similar circumstances.</p><p>Thanks</p><p>Dean</p></blockquote><p></p>
[QUOTE="mach1ne, post: 317, member: 259"] Hello Krautrapide and John, Thanks for the replies. The pivot pins and bushes are good and the forks move freely , with the spring units disconnected, with no noticeable sideways or back to front play. As you suggested John, the tyre pressure should have been 5-7 PSI higher, according to the shop I purchased the tyre from. I don't have the bike here at the moment to check the recommend pressure on the side of the tyre. I also may have had to have the damper turned down tighter. I spoke to Terry Prince ( a reputable parts supplier and developer, over many years) and his suggestions were, wheel alignment, 21" wheel with standard width tyre and also a hydraulic steering damper. What I'm trying to achieve here, is to get some understanding of the mechanism of the tank slap, so I can have some confidence that have been able to change the bike enough to ensure it doesnt happen again. At 55 , I don't bounce down the road particularly well. On a side note, the club member that took me to hospital, on the day I came off, is also a Vincent rider, who's Rapide also did exactly the same thing in fairly similar circumstances. Thanks Dean [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Advice on SEVERE tank slap
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