OJ 945 or Acme 2773

[jason1973]

Looking for a new prop. Mine has a slight nick in it. I currently have the OJ945 on my mondo but are there any preferrences? It seems some people really prefer one over the other.

We mostly surf these days with wakeboarding every now and then. When we bought the boat we wanted the surf setup.

[jcarter20]

There are about a million opinions on here. I just bought an ACME 2773 for my ‘18 Craz, but haven’t been able to try it yet. Here Is what I can tell you.....Just call ACME and talk to their prop sizing experts. Or call Nettle’s and talk to JT. Nettle’s has some really good prices. There are so many choices and what works for someone on here may not work for you. It depends on boat, weight, altitude, are you surfing, wakeboarding, skiing, etc.... Many places will let you return the prop as long as it is in like new condition and you swap it out for another one. I have an OJ 950 and it works great for me. Most people seem to lean ACME over OJ, so I thought I would give it a try.


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[jason1973]

i am looking at the 2773, we are not at high altitude, but we can be heavily weighted. We also wakeboard and tube (kids), but i think this matches what i have on today with OJ. The price at Nettles was far better than anywhere else and they also said this would work.

15x13 4 blade ACME 2773. They also suggested the 2775 which is a 12.5 pitch but that seems a little steep for a multi function boat.

[jcarter20]

ACME recommended the 2775 for me also. You probably can’t go wrong either way. Nettle’s said they would return mine as long as I only used it once and it was in like new condition.


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[larry_arizona]

2775 will push a lot of weight. I run it on a 5250# SA with 3500# ballast plus 600# lead plus 500# crew 3600rpm at 11.2mph

Empty tops out at 39mph


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[sandm]

^that's an impressive top end for a stump prop......

[jason1973]

we on occasion pull a slalom skier so 2775 may be a tad steep. Ordered the 2773 today. on backorder til next week.

[jcarter20]

I ended up with a 2775 because the 2773 was back ordered. I slalom ski also, so I will report back. I don’t slalom ski at 38mph though. [emoji12]


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[korey]

I'm running a 2775 on my Craz with 4k ballast + 500lb lead. I got on plane with nearly full ballast and 4 adults on board between wakeboard spots this weekend. I ran about 30mph. It was kind of scary! I could also pretty much see the gas gauge move while coming up on plane!

I also have an acme 1235 and an OJ 945 and all run about the same top speed: 39-40mph. I don;t really understand that since there is a big difference in pitch, but it's true - at least on my boat!

[jcarter20]

Wow! What top speed do you get with the 2775? Looks like we have the same boat.


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[korey]

I think its about 38!

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[jcarter20]

Sounds about right. They told me I would lose .5-1 mph and I get 38.5 now. Can’t wait to try this prop out.


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[jcarter20]

Reporting back on the 2775. I honestly don’t notice a difference from the OJ 950 for surfing and wakeboarding. It might plane out a touch faster for wakeboarding. I haven’t been able to see what top speed is yet as the last two nights I came back to the dock with the lights on. I will say, the Acme is a much thicker prop then the OJ. Seems like better quality.


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[Max20]

Reporting back on the 2775. I honestly don’t notice a difference from the OJ 950 for surfing and wakeboarding. It might plane out a touch faster for wakeboarding. I haven’t been able to see what top speed is yet as the last two nights I came back to the dock with the lights on. I will say, the Acme is a much thicker prop then the OJ. Seems like better quality.


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That’s interesting. I went to Delta Propeller on the west side of town and even though they carry both brands they pushed OJ. Maybe they didn’t have an Acme in stock...lol. I’ve purchased 2 this year. :mad:

[jcarter20]

That is rather interesting. Got mine at the same place. I asked him which one is better and he really wouldn’t answer me. However, When I spoke to a guy a Nettles he mentioned the ACME being thicker and better quality. Both placed said OJ was still a good prop.


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[larry_arizona]

Maybe OJ has a better profit margin.


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[jcarter20]

Got out again tonight. Top speed with 2775 is 38 mph. So basically the exact same performance as the OJ 950. I am certainly not a prop expert, but both of these props seems to be pretty solid for me. No issues with either one.


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[jnr4817]

@jcarter

How much total weight is your boat?

I’ve got an 18 Mojo, enzos, ibs, plus 480lbs lead.
So pushing around 4500lbs in ballast plus boat weight.

I’ve got the OJ945 prop but need an extra. Was thinking 950 or 2775. Thanks for your feedback. I guess either or will do.

[KnoxMojo]

I have just swapped props a few times in the last month or so. Both ACME and OJ. While the ACME does appear a little thicker, I can tell you the OJ performed better prop for prop. I took off the 2775 and put on the OJ 15x12.5, it runs way better, lower surf and wakeboard rpms and the boat just seems to be smoother. About 200-300 rpms less, 27 mph empty cruising at 3900 rpms, never did a top speed pull as I don't care. I also ran the 2773 and 945, about the same results, but the acme ran out whereas the 945 still pulled all the weight, just not as easy as the 15x12.5. If you have a 945 and looking at the 950, well, don't, it won't perform as well. The 950 is a 15x13 with more cup, so it is effectively more like a 14.75x13. The ACME 15x12 was totally overkill for my application and all revs were way high. Also tried a 15.5x15, it didn't move the boat at all under load. Not found an ACME 15.5x13 to try, but will given the chance. I ended up keeping the OJ 15x12.5 on the boat and got a 945 as a spare. Have a refinished 2773 for sale currently.

[jcarter20]

@jcarter

How much total weight is your boat?

I’ve got an 18 Mojo, enzos, ibs, plus 480lbs lead.
So pushing around 4500lbs in ballast plus boat weight.

I’ve got the OJ945 prop but need an extra. Was thinking 950 or 2775. Thanks for your feedback. I guess either or will do.

The night I tested I was surfing with 3,300lbs of lead / ballast. Full tank of gas and 6 guys all about 160-180lbs. So I was probably pushing close to 4,400 pounds with coolers of beer. [emoji6]. I have never noticed any issues with the OJ 945, 950 or the ACME 2775 surfing. I pay more attention to plaining out while Wakeboarding. I run the autowake at 80% amplitude. So my guess is that is around 2,7,00 in ballast / lead, plus people and boat weight. I honestly don’t notice much difference between the 3 I have tried. With a small crew, I have no issues plaining out. Add coolers, and get closer to 8-10 adults and kids in there and she struggles a little more. Not terrible though.


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