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+--- Thread: 43 OPEN with 660 hp CAT's - best prop? (/showthread.php?tid=8729)
43 OPEN with 660 hp CAT's - best prop? - bnr@dur-a-flex.com - 08-21-2023
Anyone have any advice on the best prop to use for a 43 OPEN with CAT 3196's making 660 hp. I have to replace my set and was wondering if there is any new technology versus the traditional 3 blade prop that I am using now.
Current prop on boat is Federal Equi-Poise Cup 27x36. I hit 2330 rpm's WOT at around 33 knots.
RE: 43 OPEN with 660 hp CAT's - best prop? - Sapphire - 08-21-2023
I would say you are propped correctly. 2330 is what the 3196s should see at WOT.
RE: 43 OPEN with 660 hp CAT's - best prop? - jclark003 - 08-21-2023
The Acme 4 blade should give you a little stern lift and a little better speed across the rpm range. They are an expensive set of wheels but if cost is no object then take a look and more importantly, see if you can borrow a set to see how your boat performs. 2320-2350 is what you want to see at full engine load and gross vessel weight.
RE: 43 OPEN with 660 hp CAT's - best prop? - bnr@dur-a-flex.com - 08-22-2023
Thank you for the information. Did you switch from 3 blade to 4 blades and experience the increase in performance?
RE: 43 OPEN with 660 hp CAT's - best prop? - jclark003 - 08-22-2023
I did not change out the props on my 43 but another 43 open maintained by the same yard put them on and reported well over a 2 knot speed increase, smoother operation and better handling. If you are serious send me a PM and I’ll try to connect you with the owner who has first hand knowledge.
RE: 43 OPEN with 660 hp CAT's - best prop? - bnr@dur-a-flex.com - 08-24-2023
pm sent thanks