duo-prop size

[Wizard]

I have a KAD 42B, super and turbo, running A-5s. Runs like a banshee, on plane in 5 seconds, but stupid temp alarm starts going off at 185 degrees, 18 knots, fully loaded, now that the water temp avg is over 70 out there, annoying. Ran at 24 knots at 3400 RPM and never got over 180 in early spring when water temp was in the low 60s. I go up to 3400 RPM and it runs at 190 degrees. At 3800 RPM I can do over 26 knots, but temp goes to 200 too easy. Top speed ever ran was 31 knots for a few seconds, but temp runs away. Still trying to re-figure all this sh*t out again, since taking out my 42A motor and replacing with the 42B last winter. Solution: Disconnect alarm.. LOL


Still amazed you get almost the same performance out of a 4 cylinder that I get out of a 26' Billfisher that started with a 40 or 41, and now has a 42 that fits so tight, you have to take off the water pump to change the impeller.