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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic Springs
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<blockquote data-quote="davidd" data-source="post: 103279" data-attributes="member: 1177"><p>Druridge,</p><p></p><p>The stock spring is 15.5" long and produces 68 lbs/in. The stock inner spring produces another 9.5 lbs/in. This made the total stock twin spring rate 77.5 lbs/in, while the stock single rate was 68 lbs/in.</p><p></p><p>The Series D sported a 16" spring that produced 63 lbs/in. Hence it was the lowest rate of the stock springs.</p><p></p><p>Here is what I would propose for the consensus:</p><p></p><p><em>With a stock Girdraulic and brake it is best to run springs that are short enough to be adjusted so that you can make your lower link parallel to the pavement as you sit on the bike.</em></p><p><em></em></p><p><em>With a stock Girdraulic and an improved front brake a modified FF2 should be installed. Once done, almost any spring that is comfortable should be fine, including stock springs.</em></p><p></p><p>I think that the "Oh Dear!" part of the conversation is that it is difficult to have consensus on properly setting up a front end with a known defect that has not been minimized or remedied in some manner.</p><p></p><p>I am a little surprised that you have noticed the how strongly the chassis moves upward when your disc brakes are applied, but you may be accustomed to it.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 103279, member: 1177"] Druridge, The stock spring is 15.5" long and produces 68 lbs/in. The stock inner spring produces another 9.5 lbs/in. This made the total stock twin spring rate 77.5 lbs/in, while the stock single rate was 68 lbs/in. The Series D sported a 16" spring that produced 63 lbs/in. Hence it was the lowest rate of the stock springs. Here is what I would propose for the consensus: [I]With a stock Girdraulic and brake it is best to run springs that are short enough to be adjusted so that you can make your lower link parallel to the pavement as you sit on the bike. With a stock Girdraulic and an improved front brake a modified FF2 should be installed. Once done, almost any spring that is comfortable should be fine, including stock springs.[/I] I think that the "Oh Dear!" part of the conversation is that it is difficult to have consensus on properly setting up a front end with a known defect that has not been minimized or remedied in some manner. I am a little surprised that you have noticed the how strongly the chassis moves upward when your disc brakes are applied, but you may be accustomed to it. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic Springs
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