How Fast Will A Quincy 6 Go ?

[J-Dub]

WOW!!!!! What a compliment! Thanks guys! That be a no can do... In the event you guys are dying to make a racing donation I recommend the Hydroplane Museum or the APBA Historical Society. Both organizations are a big help to ALL of boat racing.
Financially, the engine is about complete. But THANK YOU! The missing link I need is a Bass Over/Under unit which I have ordered. I planned to run the 17:16 gear (1.06%) with a new Dewald 7 3/4" X 15" four blade. Craig made this special for the Looper Project and he even named the prop Big Bertha.

Here are the calculations I had for the Hydro. I have the engine speed a little low so I can try to keep the rods snuggled in nice inside the crankcase. There is a REALLY smart guy in California (We'll call him Rich) that says it should turn 9600 or more... Do the math...

The Runabout should be about a .83 or .85 prop slip at top end.

Manufacturer
Engine RPM Six Looper 9,200
Gear Ratio Bass 17 16 1.0625
Prop RPM 9775
Prop Pitch 15
Prop Diameter 7.75
Tip Speed 9911.442708
Boat Speed 138.8494318
Prop Slip 0.9
Corrected Boat Speed 124.9644886

J-Dub