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Forum: Engines and Propulsion Systems

27-05-2010, 21:32

Replies: 20

Loss of Speed / RPM from New Engine

Views: 3,428

Posted By delmarrey

Mathematics say more pitch more speed. One just...

Mathematics say more pitch more speed. One just needs the HP to push it over hull speed. A 4JH4E only has about 55 HP, which is not a lot for a Warwick 46 displacing 14 tons.

Forum: Engines and Propulsion Systems

27-05-2010, 20:16

Replies: 20

Loss of Speed / RPM from New Engine

Views: 3,428

Posted By delmarrey

I would say it was the prop pitch. Internal parts...

I would say it was the prop pitch. Internal parts do wear and in turn may cause a greater pitch.

First, I think I would decrease the pitch one notch before getting too involved with the motor.
...

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