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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Standard Comet Special
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<blockquote data-quote="greg brillus" data-source="post: 103441" data-attributes="member: 597"><p>The 90 degree twist method is a bit of a myth really, it may work on a set up where the pulley's are quite a distance apart. I believe a belt should be no tighter than if it were a chain, not tight and not too loose either. Most failures of belts seem to be from poor alignment, especially on separate engine/gearbox combinations where if the gearbox and engine shafts are not square to one another, the belt walks up one end and tries to ride over the pulley guide. If the Newby clutch is run dry as usual, the steel plates can tend to want to rust, so it it worth keeping an eye on it all. They are great value for money, I wouldn't hesitate to buy another from Bob.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 103441, member: 597"] The 90 degree twist method is a bit of a myth really, it may work on a set up where the pulley's are quite a distance apart. I believe a belt should be no tighter than if it were a chain, not tight and not too loose either. Most failures of belts seem to be from poor alignment, especially on separate engine/gearbox combinations where if the gearbox and engine shafts are not square to one another, the belt walks up one end and tries to ride over the pulley guide. If the Newby clutch is run dry as usual, the steel plates can tend to want to rust, so it it worth keeping an eye on it all. They are great value for money, I wouldn't hesitate to buy another from Bob. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Standard Comet Special
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