Dumas scarab boat w/ 25cc gas engine top speed 20?

Discussion in 'RC Aircraft & Watercraft' started by losib4, Aug 2, 2003.

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  1. losib4

    losib4 New Member

    I have a dumas scarab boat with a mucculch 25cc engine and it only does 20 mph i am using a 260 prathrer prop. any advies on how to set angle of prop?
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