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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Laney Thornton suspension
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<blockquote data-quote="Robert Watson" data-source="post: 47089" data-attributes="member: 38"><p>When I lined my rear spring boxes with nylon, to a reasonably tight tolerance, the following happened.</p><p></p><p>On the way home from a rally, about a 350 mile run, we get to about 60 miles from home, when she starts to complain about a rather rough ride. Just getting a bit tired says I. I'll have a look when we get home. Next day take off a spring box and try to pull it apart. Not going to happen. Clamped one end in the vise, hooked the crane on the other end, picked up a rather heavy bench. Oh dear. Managed to finally persuade separation. Ah, the penny drops --- 300 miles in pissing rain, and nylon is hygroscopic. 15 thou clearance is now about 10 thou interference. </p><p></p><p>New liners made in UHMW polyethylene. Been in there now some 15 years or more.</p><p></p><p>Don't use nylon with any kind of tight tolerance.</p></blockquote><p></p>
[QUOTE="Robert Watson, post: 47089, member: 38"] When I lined my rear spring boxes with nylon, to a reasonably tight tolerance, the following happened. On the way home from a rally, about a 350 mile run, we get to about 60 miles from home, when she starts to complain about a rather rough ride. Just getting a bit tired says I. I'll have a look when we get home. Next day take off a spring box and try to pull it apart. Not going to happen. Clamped one end in the vise, hooked the crane on the other end, picked up a rather heavy bench. Oh dear. Managed to finally persuade separation. Ah, the penny drops --- 300 miles in pissing rain, and nylon is hygroscopic. 15 thou clearance is now about 10 thou interference. New liners made in UHMW polyethylene. Been in there now some 15 years or more. Don't use nylon with any kind of tight tolerance. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Laney Thornton suspension
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