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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rattley twin clutch??
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<blockquote data-quote="John Cone" data-source="post: 26558" data-attributes="member: 280"><p>Eureka</p><p>finally a silent clutch but and exspensive cure. It seems to me that some dimensions have altared over the years. When i machined my old clutch drum to a 5 ear i used the new friction plate as a pattern and had to dress the disc to fit. However this plate became contaminated with oil after a long lay up of the bike. I then purchased a new disc and fitted it without taking a lot of notice of the fit, this subsequently broke and thats when i bought one of the all metal discs. Then came the rattle. On measuring the ears on my drum they measured up as exactly 1.5ins and the slots for the plate was exactly 2.3/16ins. Proper Standard English measures. However when i spoke to the Spares company, Ian measured a new drum and disc to find thiers only had 10thou clearance between the ears of the plate and the drum. The ears on a new drum are measured at 1.639in, thats a difference of 100 thou +. To me 1.6 is an odd size but as these new drums are made for the Spares comany and Russel at Vinparts by a third party and the friction plates made to suite. I have had to buy a new drum to cure the rattle but my only concern is that there a lot of other people that have modified thier clutches and are they going to have the same problem i've had when it comes to replacing the friction plate.</p></blockquote><p></p>
[QUOTE="John Cone, post: 26558, member: 280"] Eureka finally a silent clutch but and exspensive cure. It seems to me that some dimensions have altared over the years. When i machined my old clutch drum to a 5 ear i used the new friction plate as a pattern and had to dress the disc to fit. However this plate became contaminated with oil after a long lay up of the bike. I then purchased a new disc and fitted it without taking a lot of notice of the fit, this subsequently broke and thats when i bought one of the all metal discs. Then came the rattle. On measuring the ears on my drum they measured up as exactly 1.5ins and the slots for the plate was exactly 2.3/16ins. Proper Standard English measures. However when i spoke to the Spares company, Ian measured a new drum and disc to find thiers only had 10thou clearance between the ears of the plate and the drum. The ears on a new drum are measured at 1.639in, thats a difference of 100 thou +. To me 1.6 is an odd size but as these new drums are made for the Spares comany and Russel at Vinparts by a third party and the friction plates made to suite. I have had to buy a new drum to cure the rattle but my only concern is that there a lot of other people that have modified thier clutches and are they going to have the same problem i've had when it comes to replacing the friction plate. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rattley twin clutch??
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