Prop testing : looking for opinions

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07-29-2002, 10:30 PM

#21

26scarab

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Tinker,
I lost 5 mph between the two props

07-29-2002, 11:10 PM

#22

Tinkerer

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That is because you went under your torque curve. I was still in my torque curve or was creating enough to overcome the extra load. (Twin engines)

08-05-2002, 06:45 PM

#23

cobra marty

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Your TQ curve is increadibly flat. I've allways maintained that a smaller pitch prop spun faster is more efficient that a larger pitch spinning slower. Is your case just proving this?

08-05-2002, 10:06 PM

#24

26scarab

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CobraMarty,
Yes I seem to be proving this on this boat.
Even when I had the stock 502mpi (64gps) I stepped down from a 23 Mirage to a 22 Hydro and the boat picked up almost 2mph.