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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Measuring Compression Ratio
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<blockquote data-quote="Big Sid" data-source="post: 42085" data-attributes="member: 2781"><p>A mixed bag of comments follows . First of all please let's not lose sight that Vincents were bravely producing the best and fastest motorcycle in the world with the coming of the Series B Rapide . Period . This wonder in spite of ever being in debt , near collapse . Pretty damn good I'd say . Irving got his sums damn near perfect under these conditions and limitations . A hero to us all . </p><p> The original rocker bush layout went huge mileages for many riders at crusing speeds beyond the reach of all other bikes . And replacement bushes were dirt cheap . And rarely failed or mentioned as poor design in the books . </p><p> The described system is near Rube Goldburg in its complexity , to my way of thinking way overdone . My own mod in this department was dead easy , cost little and elevated revs while operating near silently . And proven solidly reliable on the drag strip for three years without one failure . Ran it in my street Shadow too with all of the improvements noted above . In my mod the rocker pIn</p><p> , slightly larger and a light press in the alloy bush didn't move , while the freed rocker now bushed with oillite rocked freely about the stationary pin . A steady flow of oil reached both sides of the bush , quite easily done , and thus wear was eliminated . Oillite retaining oil never has a dry start . Think about it . </p><p> The earlier drag on the alloy bush now eliminated had it lay quietly in the tunnel so that wear in the head ceased . </p><p> This system proved faultless at revs up to 7,500 and won many trophies , as well as being trouble free on the road at all speeds , rarely ever needing adjustment or examination . Perfect . Silent running too . And easily acheved for pennies . Sid .</p></blockquote><p></p>
[QUOTE="Big Sid, post: 42085, member: 2781"] A mixed bag of comments follows . First of all please let's not lose sight that Vincents were bravely producing the best and fastest motorcycle in the world with the coming of the Series B Rapide . Period . This wonder in spite of ever being in debt , near collapse . Pretty damn good I'd say . Irving got his sums damn near perfect under these conditions and limitations . A hero to us all . The original rocker bush layout went huge mileages for many riders at crusing speeds beyond the reach of all other bikes . And replacement bushes were dirt cheap . And rarely failed or mentioned as poor design in the books . The described system is near Rube Goldburg in its complexity , to my way of thinking way overdone . My own mod in this department was dead easy , cost little and elevated revs while operating near silently . And proven solidly reliable on the drag strip for three years without one failure . Ran it in my street Shadow too with all of the improvements noted above . In my mod the rocker pIn , slightly larger and a light press in the alloy bush didn't move , while the freed rocker now bushed with oillite rocked freely about the stationary pin . A steady flow of oil reached both sides of the bush , quite easily done , and thus wear was eliminated . Oillite retaining oil never has a dry start . Think about it . The earlier drag on the alloy bush now eliminated had it lay quietly in the tunnel so that wear in the head ceased . This system proved faultless at revs up to 7,500 and won many trophies , as well as being trouble free on the road at all speeds , rarely ever needing adjustment or examination . Perfect . Silent running too . And easily acheved for pennies . Sid . [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Measuring Compression Ratio
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