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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="Oldhaven" data-source="post: 75886" data-attributes="member: 2879"><p>At the risk of getting too far behind the front end discussion, I would be interested in knowing the real world average height and range for the rear frame member pivot, and I know Dave Hills always asks for this when he makes a center stand and uses a standard method for measuring. Realizing that B and C will have different numbers and that different springs and wheels affect this number, it would still be interesting, especially if sorted by model. I don't know if Dave is on the forum, but maybe someone close could ask if he has looked at this. Mine is 12 3/4 inches, rather tall for a B, I think, but that is with a Thornton coil over, 21" front and a Thornton rear with David's long rear springs</p><p>Also, for information, the full installed length of a rear non coil over Thornton on my B Rapide from UFM spindle center to RFM center is 10 3/4 inches when on the Hills stand and the rear wheel off the ground with a spring preload. I don't recall that it gets much less when I sit on it off the stand, but I can't measure that right now. </p><p></p><p>A moderator can move this if necessary to its own topic, but as in previous suspension threads this all seems to be related in ways to handling, comfort, and safety issues. </p><p></p><p>Ron</p></blockquote><p></p>
[QUOTE="Oldhaven, post: 75886, member: 2879"] At the risk of getting too far behind the front end discussion, I would be interested in knowing the real world average height and range for the rear frame member pivot, and I know Dave Hills always asks for this when he makes a center stand and uses a standard method for measuring. Realizing that B and C will have different numbers and that different springs and wheels affect this number, it would still be interesting, especially if sorted by model. I don't know if Dave is on the forum, but maybe someone close could ask if he has looked at this. Mine is 12 3/4 inches, rather tall for a B, I think, but that is with a Thornton coil over, 21" front and a Thornton rear with David's long rear springs Also, for information, the full installed length of a rear non coil over Thornton on my B Rapide from UFM spindle center to RFM center is 10 3/4 inches when on the Hills stand and the rear wheel off the ground with a spring preload. I don't recall that it gets much less when I sit on it off the stand, but I can't measure that right now. A moderator can move this if necessary to its own topic, but as in previous suspension threads this all seems to be related in ways to handling, comfort, and safety issues. Ron [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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