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Re: Propshaft

Actually 900%!!
Centrifugal force increases in proportion to the square of the revs. Which is why balance problems show at speed. And why revs so stress engine components. Working a Seven up from its typical cruidng speed of 45 mph to valve bounce at 64 mph (or equiv in the gears) doubles many loadings.

Location: Auckland, NZ

Re: Propshaft

Bob Culver
Actually 900%!!
Centrifugal force increases in proportion to the square of the revs. Which is why balance problems show at speed. And why revs so stress engine components. Working a Seven up from its typical cruidng speed of 45 mph to valve bounce at 64 mph (or equiv in the gears) doubles many loadings.


Indeed it does, but with the Minis tiny wheels the half shafts will be spinning at over 3000RPM at 160kph! so we are all square again

Location: Fremantle Australia

Re: Propshaft

Mark Dymond
Bob Culver
Actually 900%!!
Centrifugal force increases in proportion to the square of the revs. Which is why balance problems show at speed. And why revs so stress engine components. Working a Seven up from its typical cruidng speed of 45 mph to valve bounce at 64 mph (or equiv in the gears) doubles many loadings.


Indeed it does, but with the Minis tiny wheels the half shafts will be spinning at over 3000RPM at 160kph! so we are all square again


I don't think so Mark. Minis are probably doing more around 85 kph at 1000 rpm to the wheels. That would do 160 mph at 3000 but "only" 1900 rpm at 160 kph.
We are now 250% centrifugal force. Too much but not so too much maybe?

Location: Brittany