Steve,
A follow up question....was there any difference in the prop torque between your P5-X and your four blade Bravo that required different amount of counter balancing weight to balance the hull?

It still had some right hard rotation, roll to port effect, even with the 4 blades, but it wasn't as pronounced. I had some extra cup added to my four blades to try and lock them up better, for more lift and less slip.
Since the 5 blades lock up much better, they also have the side effect of more torque roll. It isn't bad once you get the boat balanced for it. The upside is more efficient hole shot/plane off, less midrange slip %, better loaded top end #s, and more consistent handling on my boat, regardless of water conditions, smooth, choppy, or rough.
Regards,
Steve

Bill, and others with Rages. Please keep in mind the Rage and Heat are totally different boats. I've owned both, and you drive them totally different. They react different to trim, props and water conditions. Heats generally have a lot of prop slip, especially at lower speeds. The Rage does not. So the information Steve, myself and others relate about the Heat does not necessarily apply to the Rage.

Also, remember last time you tried my 5 blade it cost you a drive...

Bob

25.5 pitch

Bob,
If you need the 29 back just let me know its just a back up prop for me.

Thanks Bob. Yes that lesson I will not soon forget. I am trusting that the upgrade from the 425hp rated Bravo X1 upper gears to the 600 hp rated XR upper gears will give me a little more latitude to just test a five blade for bow lift performance. I will never own one though.

What else have you done to the B1x? I have a Raylar HO600 (dyno'd 660 HP) on a 2004 B1x (stock) and have yet to have an issue (knock on wood) but it is off to Mr. Gadgets this off season to be strengthened as best as possible. The boat is a 6000 lbs (loaded up) single engine Baja 25 OL.

After the XR gears the best thing I did was add a Simrek Halo Max drive shower. Before that I learned that with the Nordic supplied drive shower the drive lube and the engine crank case oil were having a race to see which could get hotter faster at WOT. It was basically a tie when I would chicken out and shut down at 270F. I had no problems with the X1 drive until I tried Bob's five blade Hydromotive (with much less slip) and also forgot the rule to not give more than 50% throttle during plane out/hole shot.

Do you have an engine oil temperature gauge? If yes what oil cooler do you run and is the oil temperature measured before or after the oil cooler? What is the max oil temp you see during extended WOT running and how long is that WOT run time?

George, What is your max engine HP at what rpm? What rpm do you turn that 25.5 pitch Hering at what lake elevation?

Thanks,

Bill

I do not have an oil temp gauge. The oil cooler is the stock unit.