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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="greg brillus" data-source="post: 98485" data-attributes="member: 597"><p>First question is what damper are you using, and did you use the springs without chopping anything off their length. Cutting an amount off only the upper or lower spring cases will not work on its own, you have to remove same amounts. I have only done this to the Comet I recently carried out this work on. I have found that a stiff damper masks the effect/strength of the springs, so using light springs with a stiff damper gives a very hard ride, and more noticeable on a lighter bike. The opposite is the answer, heavier springs and a soft damper. I have the benefit of having many different types of damper and springs to choose from to set up a bike to what I feel is best, so with the Comet I did last week, I did just that. I have not done a bike yet that I have not had to chop some of the spring off, If you compress the springs as they are on both sides, you will find the suspension "Topped out" and you cannot push down on the bars.........Too much pre-load, you should be able to push down on the bars with the front brake on and compress the forks by some amount. If you can't do this then something is wrong. Either too much pre-load, too stiff a damper or too much friction somewhere, usually in the spring cases that are grabbing from dirt or dents in the tubes. To check if it is the damper, simply remove it (takes no time at all) with the bike on its wheels, then push down on the bars to "Feel" how it is just on the springs alone.............this is your suspension how it should be........Not masked by a stiff damper...........The damper is there to absorb the bumps and keep the wheel/tire in constant contact with the road, it is not there to support the weight of the bike.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 98485, member: 597"] First question is what damper are you using, and did you use the springs without chopping anything off their length. Cutting an amount off only the upper or lower spring cases will not work on its own, you have to remove same amounts. I have only done this to the Comet I recently carried out this work on. I have found that a stiff damper masks the effect/strength of the springs, so using light springs with a stiff damper gives a very hard ride, and more noticeable on a lighter bike. The opposite is the answer, heavier springs and a soft damper. I have the benefit of having many different types of damper and springs to choose from to set up a bike to what I feel is best, so with the Comet I did last week, I did just that. I have not done a bike yet that I have not had to chop some of the spring off, If you compress the springs as they are on both sides, you will find the suspension "Topped out" and you cannot push down on the bars.........Too much pre-load, you should be able to push down on the bars with the front brake on and compress the forks by some amount. If you can't do this then something is wrong. Either too much pre-load, too stiff a damper or too much friction somewhere, usually in the spring cases that are grabbing from dirt or dents in the tubes. To check if it is the damper, simply remove it (takes no time at all) with the bike on its wheels, then push down on the bars to "Feel" how it is just on the springs alone.............this is your suspension how it should be........Not masked by a stiff damper...........The damper is there to absorb the bumps and keep the wheel/tire in constant contact with the road, it is not there to support the weight of the bike. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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