Article: One For Two: An innovative new propulsion system from Mastry offers all the advantages of twin propellers with one engine.(Power)(Mastry Engine Center)(Product/Service Evaluation)

Byline: Tim Banse

Mastry Engine Center has unveiled an exciting advance in marine propulsion: A single Yanmar diesel spinning twin propeller shafts. You're probably already wondering whether two transmissions would degrade performance because of compounded internal friction. To answer that question, I took a ride on a 26-foot Angler equipped with this revolutionary system. The boat accelerated well and topped out at 34 mph (3450 rpm). There was surprisingly little vibration, and the gears were quiet, soft and smooth. Long story short, I'm a convert.

The twin transmission system is called Geared Up and is manufactured by Geared Up Systems. Mastry has ...

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