Offshoreonly.com - Prop RPM VS. Engine RPM?

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THRILLSEEKER

08-07-2002 08:15 PM

Prop RPM VS. Engine RPM?

Hey guys when a engine is turning a certain number or RPMs say 6000, does that mean that the propshaft is also turning 6k:confused:
I hear people talking about changing gear ratios in outdrives.
Is this to increase or decrease the number of RPMs the propshaft is spinning compared to the engine?

cobra marty

08-07-2002 08:22 PM

To decrease propshaft speed. Ratios can be 1:1, 1.12:1, 1.25:1, 1.36:1, 1.5:1, 1.65:1.

Vinny P

08-07-2002 08:39 PM

Most stock Bravo drives are 1.5:1 ratio. That means that the engine turns 1.5 times to the prop shafts 1.

THRILLSEEKER

08-08-2002 06:41 AM

Thanks guys, do any of you know what the ratio on a stock 330TRS is?

David

08-08-2002 06:50 AM

1.5

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