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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="BigEd" data-source="post: 118343" data-attributes="member: 161"><p>b'knighted said> <em>Would those of you who are using the Concentric/AVO kit recommend that I fit the whole kit or initially just change the headstem and bottom link to keep the springing and damping that I been using?</em></p><p>I've been experimenting with various spring combinations and haven't quite settled on a final setup. It depends on what springs you plan to use. I think my probable spring choice will be 45lb springs from Norman shortened by approx 1 inch. (I think Greg suggested that this was OK on several conversions he had done and would be a good starting point.) On a Comet a lighter spring might work better, Norman has/had 33lb springs as well. I use an AVO damper front usually set to give quite light damping. (AVO monoshock rear.) If you get topping out, more damping can help but here your choice of spring rate comes in too.</p><p>I would go ahead and fit the new head stem. You can then just carefully try it around the block with the bits you've got to see which direction to go with your settings.</p><p>With the head stem fitted and forks back in place, it is then a relatively easy job to change the damper or springs. (I've got quite quick at removing an refitting the front spring units through lots of recent practice. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> )</p></blockquote><p></p>
[QUOTE="BigEd, post: 118343, member: 161"] b'knighted said> [I]Would those of you who are using the Concentric/AVO kit recommend that I fit the whole kit or initially just change the headstem and bottom link to keep the springing and damping that I been using?[/I] I've been experimenting with various spring combinations and haven't quite settled on a final setup. It depends on what springs you plan to use. I think my probable spring choice will be 45lb springs from Norman shortened by approx 1 inch. (I think Greg suggested that this was OK on several conversions he had done and would be a good starting point.) On a Comet a lighter spring might work better, Norman has/had 33lb springs as well. I use an AVO damper front usually set to give quite light damping. (AVO monoshock rear.) If you get topping out, more damping can help but here your choice of spring rate comes in too. I would go ahead and fit the new head stem. You can then just carefully try it around the block with the bits you've got to see which direction to go with your settings. With the head stem fitted and forks back in place, it is then a relatively easy job to change the damper or springs. (I've got quite quick at removing an refitting the front spring units through lots of recent practice. ;) ) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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