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Which Prop for 1970 20HP Johnson Seahorse
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<blockquote data-quote="bassboy1" data-source="post: 148786" data-attributes="member: 55"><p>You need to get a tach to really make any changes, but to me, it sounds like the second person is weighing the boat down enough that the engine is overpropped for the load. Being overpropped, the engine doesn't have enough power to turn that much prop with that much load, and is lugging. A prop with a little less pitch will gain you the RPMs back, and possibly get you running a bit faster. A tinytach can be bought for around 40 bucks or so, and with that, you can determine how much of a prop change is needed to get the motor into the ideal operating range.</p></blockquote><p></p>
[QUOTE="bassboy1, post: 148786, member: 55"] You need to get a tach to really make any changes, but to me, it sounds like the second person is weighing the boat down enough that the engine is overpropped for the load. Being overpropped, the engine doesn't have enough power to turn that much prop with that much load, and is lugging. A prop with a little less pitch will gain you the RPMs back, and possibly get you running a bit faster. A tinytach can be bought for around 40 bucks or so, and with that, you can determine how much of a prop change is needed to get the motor into the ideal operating range. [/QUOTE]
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Which Prop for 1970 20HP Johnson Seahorse
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