My boat is a AS1 from Schink and has a 775 type motor with a 45 prop on 12 cells and has only brushcooling , bigger then 45 is to much and will not give a big increasement in speed above a 45 prop but it will produce a lot more heat , i tried a 50 prop just for checking it out , stick to a 45 prop as max at least i do .

I also tried a 39 and a 42 and the different is that a 45 will excellerate faster that the two but that may differ size and weight of the boat .



Michael ,