Re: FORCE 75 H.P performance
My apologies. For some reason, my brain saw the words "going away", as in falling off. My mistake. Brain fart.
As for the cavitation or ventilation problem, it was not resolved in the post by stevetedder. So we don't know what his problem was.
The truth is that cavitation rarely affects performance in this way.
Ventilation does, but on a pontoon, 98% of them, the motor is mounted so low that half the leg is under water. And the boat doesn't lean as much as on a v hull. So ventilation is unlikely to occur unless the motor is mounted unusually high, or the operator has trimmed the motor too high - causing a blow out.
I guess we really need more info, such as how large the pontoon is, what rpm's he is running, and how low the motor is mounted in relation to the water level. Also the prop pitch.
There is a slight chance that the new prop had a spun hub, or that the pitch is too steep causing it to spin, but LLS858 seems to have ruled that out.
But ventilation doesn't explain that he can run the boat without problem for 10 minutes, then the trouble starts.
