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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="BigEd" data-source="post: 79151" data-attributes="member: 161"><p>Dear Martyn,</p><p>Great feedback on the benefits of the suspension modifications. The fully sprung seat mod does reduce unsprung weight but I query your statement that it is reduced "by the total weight of the rider and pillion". I believe that as a rule of thumb with the standard seat stay setup the pillion receives approximately half of the suspension travel enjoyed by the rider. The rider is already more or less fully sprung.</p><p>With the standard seat stays the rear springs usually cope reasonably well with the additional weight of a pillion as only half the pillion's weight is sprung. With the fully floating seat and a pillion I found that the AVO monoshock was of great benefit as I could wind in some spring pre-load to compensate for the greater weight. (Hastily adding that the greater weight is beautifully formed and in wonderful proportion or so she tells me.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" />)</p></blockquote><p></p>
[QUOTE="BigEd, post: 79151, member: 161"] Dear Martyn, Great feedback on the benefits of the suspension modifications. The fully sprung seat mod does reduce unsprung weight but I query your statement that it is reduced "by the total weight of the rider and pillion". I believe that as a rule of thumb with the standard seat stay setup the pillion receives approximately half of the suspension travel enjoyed by the rider. The rider is already more or less fully sprung. With the standard seat stays the rear springs usually cope reasonably well with the additional weight of a pillion as only half the pillion's weight is sprung. With the fully floating seat and a pillion I found that the AVO monoshock was of great benefit as I could wind in some spring pre-load to compensate for the greater weight. (Hastily adding that the greater weight is beautifully formed and in wonderful proportion or so she tells me.;)) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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