We have a 2019 Bershire 24 CL CTS pontoon. It looks great and is very roomy and comfortable. We bought it new spring 2019 and it has a 2020 Mercury 115 CT(command thrust). Great engine by the way.
Out pontoon(2 toons) came with the optional 27 inch toons. We have a lot of cavitation problems when we start increasing the RPMs. Up to 3000 rpm is not too bad, but it is very sensitive to more than 2 light people sitting up front. The engine is long shaft and it is mounted to its lowest position already.
I am not sure where the cavititation plate should be in relation to the pontoons/center engine mount fuel pod(?). When we are running 2500 to 3000 RPM and i look at the motor I can see the cavitation plate at the surface of the water. What I wonder is if the 27 inch pontoons create more lift as speed increases causing the engine to raise more. It struggles to go over 20 mph and that's with only 4 people. I get passed by pontoons with the same motor hp and 24 inch pontoons with way more people( and more people up front than in the back).
I have read about Godfrey pontoons with 27 inch toons doing the same thing. Anybody else on here have 27 inch pontoons and the same problem?
Should I talk to the dealer or the manufacturer?
Thanks,
Ron
Out pontoon(2 toons) came with the optional 27 inch toons. We have a lot of cavitation problems when we start increasing the RPMs. Up to 3000 rpm is not too bad, but it is very sensitive to more than 2 light people sitting up front. The engine is long shaft and it is mounted to its lowest position already.
I am not sure where the cavititation plate should be in relation to the pontoons/center engine mount fuel pod(?). When we are running 2500 to 3000 RPM and i look at the motor I can see the cavitation plate at the surface of the water. What I wonder is if the 27 inch pontoons create more lift as speed increases causing the engine to raise more. It struggles to go over 20 mph and that's with only 4 people. I get passed by pontoons with the same motor hp and 24 inch pontoons with way more people( and more people up front than in the back).
I have read about Godfrey pontoons with 27 inch toons doing the same thing. Anybody else on here have 27 inch pontoons and the same problem?
Should I talk to the dealer or the manufacturer?
Thanks,
Ron