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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Coil Over Damper
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<blockquote data-quote="davidd" data-source="post: 176014" data-attributes="member: 1177"><p>That is an excellent observation. I would not have thought that the Factory would have made that mistake because those who were assembling the UFM understood how the rear suspension was designed. Phil Vincent designed the two rear spring boxes and the damper to be tightened together via the two sleeves. All these parts would be tightened and would not operate independently, but together. If the sleeves become stuck in the UFM, the rear suspension will not work as designed.</p><p></p><p>I would be tempted to guess that somehow the rear suspension was set up in a way that the suspension topped off all the time and pulled the damper back. But that is unlikely as topping off would not produce much of a destructive force like bottoming out does.</p><p></p><p>Ultimately, I was attempting to point out that when you modify the stock Vincent suspension, it may change the path that the suspension forces travel and that path may not be strong enough to do a good job of distributing those forces. I changed to a coil over rear shock, but I felt that both the top and bottom mounts for the shock needed to be strengthened to accommodate the higher forces.</p><p></p><p>[ATTACH=full]60824[/ATTACH]</p><p></p><p>I ended up with the reinforcement at the top and the redesigned lower mount, which routed the suspension forces through the original spring lugs on the RFM.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 176014, member: 1177"] That is an excellent observation. I would not have thought that the Factory would have made that mistake because those who were assembling the UFM understood how the rear suspension was designed. Phil Vincent designed the two rear spring boxes and the damper to be tightened together via the two sleeves. All these parts would be tightened and would not operate independently, but together. If the sleeves become stuck in the UFM, the rear suspension will not work as designed. I would be tempted to guess that somehow the rear suspension was set up in a way that the suspension topped off all the time and pulled the damper back. But that is unlikely as topping off would not produce much of a destructive force like bottoming out does. Ultimately, I was attempting to point out that when you modify the stock Vincent suspension, it may change the path that the suspension forces travel and that path may not be strong enough to do a good job of distributing those forces. I changed to a coil over rear shock, but I felt that both the top and bottom mounts for the shock needed to be strengthened to accommodate the higher forces. [ATTACH type="full"]60824[/ATTACH] I ended up with the reinforcement at the top and the redesigned lower mount, which routed the suspension forces through the original spring lugs on the RFM. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Coil Over Damper
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