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FJR Motorcycle Forums
Technical & Mechanical Problems
Valve Cover Rubber Needed? (Was Oh Crap!)
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<blockquote data-quote="Fred W" data-source="post: 1422556" data-attributes="member: 3828"><p>I guess you would have to calculate the centrifugal force of a chain of that length running at 9k rpm and decide if it would deflect the chain between the two cams. The other two long runs, running down to the crank and running back up to the intake cam sprocket are both taught with curved guides to keep them from deflecting outward. Im thinking the engineers decided that if there was any slack that caused that chain to deflect outward that it wouldnt take too long for it to saw through the alloy valve cover. Seems like cheap insurance to securely glue that sucker back in there where it belongs.</p></blockquote><p></p>
[QUOTE="Fred W, post: 1422556, member: 3828"] I guess you would have to calculate the centrifugal force of a chain of that length running at 9k rpm and decide if it would deflect the chain between the two cams. The other two long runs, running down to the crank and running back up to the intake cam sprocket are both taught with curved guides to keep them from deflecting outward. Im thinking the engineers decided that if there was any slack that caused that chain to deflect outward that it wouldnt take too long for it to saw through the alloy valve cover. Seems like cheap insurance to securely glue that sucker back in there where it belongs. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Valve Cover Rubber Needed? (Was Oh Crap!)
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