Which Prop?

[Keith_Menard]

Coming from the jet boat world, I have NO idea how to read these things. I have a prop on there right now, but I think the wake can be better...It's a 2003 Gekko.

 

Prop 1:

 

Prop 2:

 

 

[Jordan]

The first prop is a 13 inch pitch and 13 inches in diameter. The MD 1200 is likely a model number. LH stands for left hand rotation.

 

Prop 2 isn't giving any info....Give Acme a call

[mlange]

Is that a crack forming on the Acme?

[sunvalleylaw]

I also see CVP stamped on the first one (looks upside down).

CVP is a prop manufacturer. And also I see markings maybe indicating an inch and an eighth, for shaft size.

[DavidN]

I would go with the ACME.

It is a cnc machined prop and is superior to the old forged CVP.

 

[Keith_Menard]

I am wondering if that one has a crack forming too...might just need to bite the bullet and order one up.

[mlange]

The smoothness you'll get going from anything that is forged (CVP) to anything that is CNC'd (ACME, OJ) is well worth it. CNC'd props have been around so long now that I think some of us sometimes forget how much vibration you could feel in the past.

[DW]

@"Keith Menard" : the stainless prop (CVP - Central Valley Propeller) as noted is a 13 x 13 with a 1-1/8" shaft. The MD stands for the cup they used, and CVP used blank / M / MD for progressively more cup on those. The MD is very close if not a 13 x 14 prop.

The other side of the hub on the Acme should give you the specific details on which prop (PN, specifications), which you can go to the Acme website and see what that represents. The Gekko is a pretty light boat, so you will be able to prop it taller than heavier similar boats. My guess is that Acme prop is a 449 which should be comparable to the CVP MD which was probably original equipment. Acme props will have less pitch to provide same speed to RPM ratio compared to CVP, Michigan Wheel, etc props due to more blade area.

[Keith_Menard]

I just spoke with Mark Overbay and he recommended the 315. We will see what it does!

[dhofert]

I don't want to hijack this thread but, we are also looking for a prop for our 4winns. Just tried a bigger 15" I believe tonight. Was not terrible out of the hole but I thought it made the wake terrible. Seemed to almost be a third bump in the center and I am on a full length rope right now.

 

Being not really a ski boat I was wondering what recommendations if any, any of you have. We are looking for a good pullout for me skiing but also a decent cruiser. We have a 350-400hp chevy 350 I/O.

 

I don't really understand much at all about the props.

If you would rather I can make my own thread too.

 

Thanks

[Kdinger838]

@dhofert tried a 15p opposed to what? Stainless? Really depends on the rpms you're currently pulling as to whether you can drop to a 13" most I/o have somewhere between a 17-21. If you have a removable hub, you can buy another prop and try it and keep whatever works. Or a good dealer will let you try other props to see what spins best for your boat. As for the wake, try different line lengths to see what feels the best. I know it's not a tournament boat but whatever gets you skiing!