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General Chat (Vincent Related)
The Passenger rides on a rigid frame
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<blockquote data-quote="hadronuk" data-source="post: 42642" data-attributes="member: 1866"><p>I can't make sense of the quoted amount of suspension travel in that drawing. With a standard Vincent damper having a stroke of about 3" and the C series lever ratio being 1.5 to 1, that gives 4.5" of travel, which is close to what I measure on my bike. I know B series have a lower lever ratio, (1.4?) but not enough to reduce travel to 3.5"!</p><p></p><p>Then near the end of the article it says 6" of travel. Impossible on a standard B or C.</p><p></p><p> I suppose the "3.5 inches of travel" could refer to bump travel from the static ride position, in which case the figure seems very high for a bike with standard length springs, unless the rider was near weightless.</p><p></p><p>From memory (dangerous!) the standard spring length is 6.75". It is solid at about 4.7", but the standard damper bottoms out a bit before that. (Other dampers bottom a lot before that.) So the total available spring compression is 2" at most, which is 3.0" at the wheel of a C.</p><p>But that allows nothing for the weight of the bike or rider.</p></blockquote><p></p>
[QUOTE="hadronuk, post: 42642, member: 1866"] I can't make sense of the quoted amount of suspension travel in that drawing. With a standard Vincent damper having a stroke of about 3" and the C series lever ratio being 1.5 to 1, that gives 4.5" of travel, which is close to what I measure on my bike. I know B series have a lower lever ratio, (1.4?) but not enough to reduce travel to 3.5"! Then near the end of the article it says 6" of travel. Impossible on a standard B or C. I suppose the "3.5 inches of travel" could refer to bump travel from the static ride position, in which case the figure seems very high for a bike with standard length springs, unless the rider was near weightless. From memory (dangerous!) the standard spring length is 6.75". It is solid at about 4.7", but the standard damper bottoms out a bit before that. (Other dampers bottom a lot before that.) So the total available spring compression is 2" at most, which is 3.0" at the wheel of a C. But that allows nothing for the weight of the bike or rider. [/QUOTE]
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The Passenger rides on a rigid frame
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