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OJ 1997 vs Acme 2773


mtvnuccio

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I'm looking for some prop advice for my 2020 A22, OJ 1997 vs Acme 2773... pro's/ con's??

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I am running the 2773 on my M5. Full MLS, 850lbs bow weight with wedge at 4 and 11.2mph will see you at @ 3800 rpm. 20 mph with 2 people and full fuel will see you @ 3700ish rpm. It will keep in the sweet spot of torque curve, but the rpms will be kind of high IMO. If you wakeboard, don’t even consider it! JM2C

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Last year I damaged my 2773 loading the boat on the trailer, and couldnt get another due to the end of the world... otherwise know as covid. Acme recommended getting the 3093 prop. But I noticed that the boat would pull at a higher rpm( around 4000-4500rpm) when surfing.  So I've decided to stick with my 2773 prop. I sold the 3093 and now I need to get another  back up prop.  Not sure if I should try something else or stick with the 2773

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formerathlete

I don’t know your elevation, crew size, ballast or boat use preferences but IMO, the 15x13 2773 might be the lowest pitched prop you’d want to go with considering fuel consumption/RPM’s. Especially if you wakeboard. I’d probably consider a 15x14 prop for a spare. Maybe the ACME 2249 (15x14.25) or OJ V4 1951 (15x14).
 

JM2C, though, as I only have experience on my ‘19 A22 with a 2249 and a 2279. I believe @scrupulousrecently tested out an OJ 1951 on their A22 and came away disappointed. Might be worth a DM. 
We love our 2249 as a spare and actually end up using it whenever we go to higher elevations or with huge crew.

Edited by formerathlete
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This prop is for my 2020 A22, almost always surfing. full ballast in rear, about 80% full up front and power wedge at 4 or 5. the 3093 that I was using was pulling way too much rpm. So, its either get another 2773 as a spare  or maybe find something that might work a little better

 

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formerathlete

I think you’d find lower RPM by more bow weight. 100% ballast plus consider lead. These newer A22 hulls need more bow weight. When bow high, RPM high. 

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formerathlete

The only time I fill rear ballast of our A22 (750’s) to 100% is when bow ballast is full and some crew are up front. And I never go above 4 on PW3. Too much rear weight and your prop is pushing you to the moon and not forward=crazy RPM’s

Edited by formerathlete
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I am running a 2773 as my current prop and needed a spare so thought we would try the 1951.  I ran it for a day at Cumberland and it wasn't the right solution for us.    We run full ballast (750 PNP in the rear), 250 lb of lead in the nose, and the wedge between 2 and 4.   With lift mode we were able to get on plane no problem but it was noticeably longer.   I really didn't notice much if any different in the RPM's, maybe 100/200 when wakeboarding but surfing was about the same.   We also felt like there was a bit of a shudder when getting on plane that isn't there with the 2773.  

That said, OJ is great to work with, took back the 1951 and shipped us a 1991.  Haven't had a chance to try it yet.   Would love to find something to reduce our RPM's slightly, I'm still tweaking our nose to stern weight to help.    

Edited by scrupulous
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