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-   -   TRS gear ratio (https://www.offshoreonly.com/forums/drives-lower-units/342486-trs-gear-ratio.html)

jsbrowni 11-07-2016 06:50 PM

TRS gear ratio
 
Is the TRS gear ratio from a 1977 Scarab with SBC 350's 1.50 or 1.33?
Thanks,
Shawn

picklenjim 11-07-2016 11:35 PM

1.5. They never made a 1.33

MASOMAN 11-10-2016 05:56 PM

They did make a 1.32 ratio.

Rookie 11-10-2016 07:19 PM

http://www.bluewatermarinesvc.com/pd...ear_ratios.pdf

MASOMAN 11-11-2016 08:21 AM

Back in the 80's I set up numerous TRS drives to a 1.32 ratio. Back then there wasn't big enough propellers for the engine hull combinations we had. Matter of fact today I am shipping out 1 of the tools to set up the lower TRS to a fellow OSO member to use. I will have to look at some old paper work to see how we did it.

picklenjim 11-12-2016 01:05 AM


Originally Posted by MASOMAN (Post 4499662)
Back in the 80's I set up numerous TRS drives to a 1.32 ratio. Back then there wasn't big enough propellers for the engine hull combinations we had. Matter of fact today I am shipping out 1 of the tools to set up the lower TRS to a fellow OSO member to use. I will have to look at some old paper work to see how we did it.

Never heard of that being done before. That would be interesting to know how you did that.


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