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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Best input sought to update front and rear suspension ?
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<blockquote data-quote="Big Sid" data-source="post: 37150" data-attributes="member: 2781"><p>Back on subject , suspension . My departed pal Ken Pettiford had the first longer rear springs made and these were superb , not too firm nor too long . Enough to easily carry a companion or a heavy load of luggage and give greater ground clearance too , yet retain a supple ride . He sent me an early set to try , report back , my weight and size a good test . All went beautifully with them . </p><p> A sweet guy , warm and friendly Ken had put huge mileage on his strong running Shadow . Was a pal also of my close friend Ed Leksa . </p><p> Back to the rear springs length effects upon handling . With longer springs the front forks are pulled in at the bottom so lessening the rake . With this subtle effect created by the top member, oil tank , now further forwards the altered fork angle feels lighter , the front end more flickable with less effort , the strength necessary reduced . Carried too far and the front end feels skittish , on the edge of a wobble perhaps from the reduced castor effect . Kens springs felt just right . </p><p> Even the standard original springs can be tweaked , particularly if sacked out shorter by extending the top and bottom eye bolts SP 4 a couple turns each . Check that the springs boxes are identical eye to eye on the bench before assembling on the bike . Also be sure the inner spring claws SP 1/1 are firmly engaged . </p><p> Sid .</p></blockquote><p></p>
[QUOTE="Big Sid, post: 37150, member: 2781"] Back on subject , suspension . My departed pal Ken Pettiford had the first longer rear springs made and these were superb , not too firm nor too long . Enough to easily carry a companion or a heavy load of luggage and give greater ground clearance too , yet retain a supple ride . He sent me an early set to try , report back , my weight and size a good test . All went beautifully with them . A sweet guy , warm and friendly Ken had put huge mileage on his strong running Shadow . Was a pal also of my close friend Ed Leksa . Back to the rear springs length effects upon handling . With longer springs the front forks are pulled in at the bottom so lessening the rake . With this subtle effect created by the top member, oil tank , now further forwards the altered fork angle feels lighter , the front end more flickable with less effort , the strength necessary reduced . Carried too far and the front end feels skittish , on the edge of a wobble perhaps from the reduced castor effect . Kens springs felt just right . Even the standard original springs can be tweaked , particularly if sacked out shorter by extending the top and bottom eye bolts SP 4 a couple turns each . Check that the springs boxes are identical eye to eye on the bench before assembling on the bike . Also be sure the inner spring claws SP 1/1 are firmly engaged . Sid . [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Best input sought to update front and rear suspension ?
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