View Full Version : three blade vs. four blade
10-11-2007, 11:20 PM
I have a 93 205 with the 285 hp engine, which prop is better three or four blade? And what pitch, mostly used for wakeboarding.
10-11-2007, 11:42 PM
Call or email Acme or OJ and tell them what you have, boat/engine/ballast and what you want to do. They will set you up with what you need. I'd suggest a CNC model.
10-12-2007, 11:01 AM
thanks, any other suggestion out there?
10-12-2007, 11:05 AM
i have always been told that a 4 blade has more power then a 3 blade i dont know how true that is but i have a 3 blade on my 88 m/c right now and i will be getting a 4 blade from oj for my power slot i need the power more then the speed
10-12-2007, 11:13 AM
From personal experience, the four blade has better hole shot, little bit rougher wake in the center at short line and you lose some top end speed. However, I tried two different four blade props and got two different results at top end. One I lost HP and one was about the same. There was a very noticeable improvement in smoothness on hole shot. If you are not barefooting at 42MPH go for it.
east tx skier
10-12-2007, 11:17 AM
On the Acme props, the 3 blade and the four blade have the same overall blade surface area (or close). So the hole shot is pretty great with the three blade without the loss of top end. On the OJ, the four blade might be the best bet. Whichever way you go, call either Eric at OJ or Bill at Acme and talk to them about what they recommend. A lot will depend on what you're using the boat for.
10-12-2007, 11:44 AM
I'm loving my 4 Blade OJ. I get a great holeshot (compared to riding in a few other's with a 3 blade) and I still get a Top Speed of 52mph. FWIW.
10-12-2007, 12:39 PM
The best thing would be to call OJ. I'm sure someone here will soon provide you with contact information as it has come up before and there are other threads on this subject.
I've always been told that there are several factors involved with some of the most important being the weight of the boat and the torque curve or power band of the engine. We have an X14 with the MCX and it came with a 3 blade which I've been told is to provide some initial slip for ultimately a better hole shot. I can tell you I don't feel any slip over my last two boats which both had 4 blades so if it's there it's unnoticeable to me anyway.
Not very scientific but that's what I know.
10-12-2007, 12:44 PM
Eric @ OJ Props @ 1-800-359-9730 or here on TT as EJ OJPROP, pm, e-mail or catch him in a thread. He is usually on here early in the morning. I wouldn't trade all the 3 blades for the 2 OJ 4 blades I have.
10-12-2007, 05:22 PM
thanks everyone for all your input