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RPM question?
liam.mccaffrey - 30/4/10 at 09:59 PM

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?

Dangle_kt - 30/4/10 at 10:02 PM

crank revolutions.

PSpirine - 30/4/10 at 10:03 PM

The number of times the crankshaft physically turns in a minute

omega0684 - 30/4/10 at 10:10 PM

^^^^^^ what they said

Chippy - 30/4/10 at 10:54 PM

Think the clue is in the name, Revolution per minute Cheers Ray

stevebubs - 1/5/10 at 01:05 AM

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...