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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Brampton Coil-Over Damper
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<blockquote data-quote="Oldhaven" data-source="post: 110815" data-attributes="member: 2879"><p>My clevises rotate easily at both ends, the lower one on oilite bushings, and the double nuts assure it is not locked solid. Vibrac's spring is captured in a sleeve so it cannot bow as easily, and the hook is what I have in mind if I do this again. When I bought it it was modified by adding a 1/2" rod spacer internally to shorten travel so it would not cause the lower links to hit the girder. I note that both examples above seem to have less available travel, and I wonder if mine should have been constrained a bit more on the extension to limit the angular difference and bowing forces at the extended extreme. </p><p></p><p>For reference, if anyone wants to know, the spring is 120 lbs, 6.812 long, and uses .262" wire. The shaft is 1/2" x 5-7/8" long including the piston and threaded ends. If I make another shaft I may eliminate the spacer and make it shorter. I will for sure make it a 12mm thread to get a bit more than the .297 minor diameter I had with 3/8.</p></blockquote><p></p>
[QUOTE="Oldhaven, post: 110815, member: 2879"] My clevises rotate easily at both ends, the lower one on oilite bushings, and the double nuts assure it is not locked solid. Vibrac's spring is captured in a sleeve so it cannot bow as easily, and the hook is what I have in mind if I do this again. When I bought it it was modified by adding a 1/2" rod spacer internally to shorten travel so it would not cause the lower links to hit the girder. I note that both examples above seem to have less available travel, and I wonder if mine should have been constrained a bit more on the extension to limit the angular difference and bowing forces at the extended extreme. For reference, if anyone wants to know, the spring is 120 lbs, 6.812 long, and uses .262" wire. The shaft is 1/2" x 5-7/8" long including the piston and threaded ends. If I make another shaft I may eliminate the spacer and make it shorter. I will for sure make it a 12mm thread to get a bit more than the .297 minor diameter I had with 3/8. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Brampton Coil-Over Damper
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