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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
vibration
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<blockquote data-quote="riptragle1953" data-source="post: 34076" data-attributes="member: 2328"><p><strong>Virbration</strong></p><p></p><p>I have found that a major cause of vibration is the fact that Vincent main-bearing case bores have long ago given up the ghost</p><p>for an accurate bearing fit.... and some of the recommended "fixes" simply make matters worse. A bearing is no better that it's</p><p>housing.... and an out of round, oversize, soft alloy housing simply means you have fitted a brand new bearing to horrible conditions</p><p>which are a joke if you read the bearing manufactures specifications on required fitting. LocTite is simply no answer at all and can</p><p>indeed make matters worse.</p><p>All the Vincents I built had the cases line bored for aluminum bronze bearing sleeves which held the mains to the bearing manufactures</p><p>specs.... like .0002" out of round and zero taper. With a .0025 interference fit I could use .0006" radial clearance.... and thus no</p><p>vibration what-so-ever.</p></blockquote><p></p>
[QUOTE="riptragle1953, post: 34076, member: 2328"] [b]Virbration[/b] I have found that a major cause of vibration is the fact that Vincent main-bearing case bores have long ago given up the ghost for an accurate bearing fit.... and some of the recommended "fixes" simply make matters worse. A bearing is no better that it's housing.... and an out of round, oversize, soft alloy housing simply means you have fitted a brand new bearing to horrible conditions which are a joke if you read the bearing manufactures specifications on required fitting. LocTite is simply no answer at all and can indeed make matters worse. All the Vincents I built had the cases line bored for aluminum bronze bearing sleeves which held the mains to the bearing manufactures specs.... like .0002" out of round and zero taper. With a .0025 interference fit I could use .0006" radial clearance.... and thus no vibration what-so-ever. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
vibration
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