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Author: Subject: RPM question?
liam.mccaffrey

posted on 30/4/10 at 09:59 PM Reply With Quote
RPM question?

Imagine a single cylinder 4 stroke engine.

is the indicated rpm the rate of crank revolutions or the rate of completed power strokes?

With 2 strokes its obviously the rate of crank revolutions. I would guess its the same for 4 strokes but i wasn't sure?





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Dangle_kt

posted on 30/4/10 at 10:02 PM Reply With Quote
crank revolutions.
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PSpirine

posted on 30/4/10 at 10:03 PM Reply With Quote
The number of times the crankshaft physically turns in a minute
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omega0684

posted on 30/4/10 at 10:10 PM Reply With Quote
^^^^^^ what they said





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Chippy

posted on 30/4/10 at 10:54 PM Reply With Quote
Think the clue is in the name, Revolution per minute Cheers Ray





To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy

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stevebubs

posted on 1/5/10 at 01:05 AM Reply With Quote
quote:
Originally posted by Chippy
Think the clue is in the name, Revolution per minute Cheers Ray


It is - but it could be referring to Cam RPM, which is half the crank RPM.

However, it's not. So the point is moot. I'll get me coat...

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