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Forum: Drives and Lower Units

08-06-2019, 05:13 PM

Replies: 9

Question on gear ratio

Views: 2,438

Posted By speicher lane

you will likely find you gain rpm and the boat...

you will likely find you gain rpm and the boat actually runs faster - in other words, your current "set-up" hit a wall - its' maxed out for what it can do...Prop design, pitch and diameter will play...

Forum: Drives and Lower Units

08-06-2019, 03:41 PM

Replies: 9

Question on gear ratio

Views: 2,438

Posted By speicher lane

Based on a boat weight of 3900lb, people gear of...

Based on a boat weight of 3900lb, people gear of 500lbs and 20 gallons of fuel the merc prop selector for a 1:81/ 5L combo is a 19P Rev 4, and 21 on Vengeance, B. Max and inertia.

1:61 drops pitch...

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