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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Help required measuring coil lengths on AVO coil over rear dampers.
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<blockquote data-quote="timetraveller" data-source="post: 150058" data-attributes="member: 456"><p>Bill, what we found with the front of the bikes when I started supplying the JE steering stems was that once we did the Greg Brillus mod of fitting ball races to the rear of the lower link then even the highest level of damping built into the standard AVO dampers was inadequate. The reduction in friction is remarkable. Chris Launders who was doing the test riding, is a heavy chap and it was so bad that he thought that the damper had failed. In the end AVO made special dampers with increased damping and I now supply these to any heavy riders. Heavy in this context means about 18 stones or above. These are too stiff for lower weight riders and so there is a limit to what can be done with the damping and still have comfort. As Chris has just posted (while I was writing this) the damping is not going to compensate for too much weight. Apart from data points taken from Chris' bike the only other one has come from MVH and that is just one point to help to check if the table of figures we have produced is correct. The amount of compression measured by MVH only differs from my calculated one by 0.2" which sounds to be not too bad. But consider that a fifth of an inch with a 350 lbs/inch spring is 70 lbs so I woiuld still like to get some more measurements to check/improve my table. I know that there are quite a lot of you out there with the AVO rear coil over dampers as I have supplied many of them. <strong>Any chance of any more feedback?</strong></p></blockquote><p></p>
[QUOTE="timetraveller, post: 150058, member: 456"] Bill, what we found with the front of the bikes when I started supplying the JE steering stems was that once we did the Greg Brillus mod of fitting ball races to the rear of the lower link then even the highest level of damping built into the standard AVO dampers was inadequate. The reduction in friction is remarkable. Chris Launders who was doing the test riding, is a heavy chap and it was so bad that he thought that the damper had failed. In the end AVO made special dampers with increased damping and I now supply these to any heavy riders. Heavy in this context means about 18 stones or above. These are too stiff for lower weight riders and so there is a limit to what can be done with the damping and still have comfort. As Chris has just posted (while I was writing this) the damping is not going to compensate for too much weight. Apart from data points taken from Chris' bike the only other one has come from MVH and that is just one point to help to check if the table of figures we have produced is correct. The amount of compression measured by MVH only differs from my calculated one by 0.2" which sounds to be not too bad. But consider that a fifth of an inch with a 350 lbs/inch spring is 70 lbs so I woiuld still like to get some more measurements to check/improve my table. I know that there are quite a lot of you out there with the AVO rear coil over dampers as I have supplied many of them. [B]Any chance of any more feedback?[/B] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Help required measuring coil lengths on AVO coil over rear dampers.
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