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Search took 0.00 seconds. Search: Posts Made By: Roy M

Forum: Multihull Sailboats

08-12-2011, 09:11

Replies: 14

40' Jim Brown Searunner

Views: 6,788

Posted By Roy M

Re: 40' Jim Brown Searunner

I discarded my engine panel and fabricated a new one to include both analog instruments and "idiot" lights with piezoelectric buzzers (different sounds for different alarms).

I also installed...

Forum: Multihull Sailboats

03-12-2011, 09:03

Replies: 14

40' Jim Brown Searunner

Views: 6,788

Posted By Roy M

Re: 40' Jim Brown Searunner

John (Marples), I'm a little confused. Are you recommending a 2.0 reduction and a smaller shaft than 1 inch? I throw a 16 X 10 two blade on a one inch shaft, and get performance in going to weather...

Forum: Multihull Sailboats

10-11-2011, 08:33

Replies: 14

40' Jim Brown Searunner

Views: 6,788

Posted By Roy M

Re: 40' Jim Brown Searunner

I screwed up and didn't make the time limit for edits, so here's the correction: The prop is a Martec Mark III Elliptical, RH 16" diameter by 10" pitch. Cruise RPM is 2200 resulting in a fuel...

Forum: Multihull Sailboats

10-11-2011, 07:47

Replies: 14

40' Jim Brown Searunner

Views: 6,788

Posted By Roy M

Re: 40' Jim Brown Searunner

I have a Searunner 40 with a Yanmar 3GM30F engine. I chose the lower shaft speed ratio, at the recommendation of the dealer. I swing an 18" diameter (and I recall a 12" pitch) Martec Mark III...

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