<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I’d estimate 5 sets of sprockets or less if your scottoiler numbers are used. $500-700 for quality chain and sprockets and any shade tree mechanic could do the work themselves. Unsprung weight reduction would be greatly reduced.<div>I enjoyed my BMW but do not miss it. <br><div dir="ltr">Jason<div><br></div></div><div dir="ltr"><br><blockquote type="cite">On Feb 20, 2021, at 08:54, John Borella via Tanx <tanx@lists.micapeak.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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The original driveshafts & rear drives in my 1976 R90/S (110K) & my 1973 R75/5 (50K+) are still going strong after all those years. How many chains & sprocket sets would that be & what would it have cost? That said I run Scottoilers on my Duc & my Aprilia
& only had to adjust the chain once on long trips of 8-10k which included high speed runs out West.</div>
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