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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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<blockquote data-quote="oexing" data-source="post: 118370" data-attributes="member: 1493"><p>There are a few items in this topic to be discussed separately: Any bad excessive "friction" in original oilite bushed girder links is most likely due to poor alignment of bushes, not perfectly line-reamed. So when changing for ball or needle bearings this defect got glossed over or rectified and was not a real snag of plain bushes. Some friction in there is basically no factor as any shock absorber has a LOT more friction in it than that tiny amount in a plain bearing. And in most girder forks you get extra friction dampers as standard for sure . So I would not want ballbearings in there but get maintenance free bushes instead, no grease used and no rust problem on stainless bolts with their bushes. </p><p> As to topping or bottoming out nothing will help but having some rubber bump stops in suitable places when not getting real progressive springs or a combo of springs for same effect instead. Some dampers have a strong short spring inside and a rubber buffer on the external damper rod for bump stops. In modern teleforks you can add air pressure for fine tuning to suit different loads, same can be done with dampers. So maybe this could be kept in mind for mods ?</p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 118370, member: 1493"] There are a few items in this topic to be discussed separately: Any bad excessive "friction" in original oilite bushed girder links is most likely due to poor alignment of bushes, not perfectly line-reamed. So when changing for ball or needle bearings this defect got glossed over or rectified and was not a real snag of plain bushes. Some friction in there is basically no factor as any shock absorber has a LOT more friction in it than that tiny amount in a plain bearing. And in most girder forks you get extra friction dampers as standard for sure . So I would not want ballbearings in there but get maintenance free bushes instead, no grease used and no rust problem on stainless bolts with their bushes. As to topping or bottoming out nothing will help but having some rubber bump stops in suitable places when not getting real progressive springs or a combo of springs for same effect instead. Some dampers have a strong short spring inside and a rubber buffer on the external damper rod for bump stops. In modern teleforks you can add air pressure for fine tuning to suit different loads, same can be done with dampers. So maybe this could be kept in mind for mods ? Vic [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Modified Steering Stem
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