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motor height
Just seeing what anybody thinks. I am wondering if my motor is mounted to high. My time to plane sucks, I have a Vengeance 15 pitch on a mercury 115 efi The boat is a 19ft bay boat. I have tried a Vengeance 14 pitch and it was not any better. Just looking for some advice and buying a new boat or motor is not an option.haha
Replies
Then hang your head over the trans, the anti ventilation plate should be at the waters surface.
It looks low now.
Next if you are having a problem getting up on plane drop the pitch and or go 4 blade.
Stuff to test, we can talk about tricks to getting on plane in shallow water after you have that worked out.
Looks like the motor is low to me.
before we start dropping pitch - you need to find out what RPM the motor runs @ wide open throttle
if RPM is low,odds are,the prop's pitch is too much
4 blade,in the same pitch,will actually cause time to plane to increase,also drop RPM - due to more "blade surface"
all this applies to a motor,with known good health...
motor looks a few holes low...
:wink
so a 1/4" every 3" of set back. In your case the cav plate should come about a half inch above your straight edge. The bolt holes are in 3/4" increments. Do the rpm test as mentioned before.
your other option could be trying one of the vented props. Underpowered or heavy vessels benefit from a vented prop, because the venting allows the prop to spin more rpms during holeshot. The higher rpms allow the engine to get into the top of its power band.
FSD
Even the same hulls run different with different loads and uses.
That is why we have trial and error.
I Had a tach on my 17' skiff and had 5 different props on it before I found the one I liked.
If I move the weight forward on the boat I could over rev it and get 2 more mph.