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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
New Shadow motor now what do I do?
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<blockquote data-quote="Monkeypants" data-source="post: 34961" data-attributes="member: 2708"><p>The spring thing is not universally known.</p><p>It was noted by John Mcdougall some years ago that his customer's rebuilt bikes were not performing as they ought to. On checking valve spring pressures it was found that they were dramatically below spec. Dan Smith was already using the R&D springs, so John replaced the club springs with those. Thebike in question gained about 20 mph top end with just this one change. Im not sure if Terry was already onto this, or found out from Dan or John. In any case, by the time I got involved with Vincents in 2004, Terry was stocking the R&D racing valve spring kits. Cost is about $400 vs less than $100 for the others, but the quality is there.</p><p></p><p>Glen</p></blockquote><p></p>
[QUOTE="Monkeypants, post: 34961, member: 2708"] The spring thing is not universally known. It was noted by John Mcdougall some years ago that his customer's rebuilt bikes were not performing as they ought to. On checking valve spring pressures it was found that they were dramatically below spec. Dan Smith was already using the R&D springs, so John replaced the club springs with those. Thebike in question gained about 20 mph top end with just this one change. Im not sure if Terry was already onto this, or found out from Dan or John. In any case, by the time I got involved with Vincents in 2004, Terry was stocking the R&D racing valve spring kits. Cost is about $400 vs less than $100 for the others, but the quality is there. Glen [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
New Shadow motor now what do I do?
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