What prop to get on plane on one engine?
 

32 Sunsation Dominator twin 496HO. 6500lb dry.
We plan to do some longer runs to the islands and would like to be able to get on plane on one engine if we had a problem.
Current props are 30 labbed Bravos and runs in the max rpm range.
I have a 24 Rev 4 I will try but if anyone has a suggestion let me know. My buddy owns a prop testing service ;-)

We also may add a fuel bladder.

https://cimg7.ibsrv.net/gimg/www.off...3d2a696576.jpg

I am assuming that you will carry this as a spare and change out if needed. The Eco Enertia has incredible bite and is 3 blade with big surface. Carry an 18 and that should do it.

Joe

Never thought of doing that. Any other experiences with doing this? Probably would work on a heavy boat, right?

tried that on my 28Saber. 650's bravo with imco lowers. Nothing i tried would get it up on plane. no prop would bite and everything just blew out and cavitated.

That`s not happening .


EDIT: It`s happening!!

Join Sea Tow

They will come to you and instruct you to go full gas on one engine and pull you up on plane and run at 25-35. They wont do this on inland lakes and waterways but offshore they will.

Maybe........I think Sydwayz said he could get on plane with one engine on his 37 AT.
Might be possible with a 22-24" 4 or 5 blade prop.

Yep, I've done it several time in different 37ATs.
I ran stock 28 Bravo1 4 blades on my boat, and I know Pat has done it with 30s. You would be better off with a meaty 5 blade for this task, but a 4 blade has worked.

Bury the tabs, and ease the boat up. You may have to waddle the steering wheel a bit back and forth for it to surf it's way up. I've been on plane as slow as 17mph in the 37AT hull with the tabs buried.
I've run as fast as 30mph with only a single screw, WITH the second downed side prop on. Realize, you are putting TREMENDOUS stress on the drive that IS working.

If you "have anything left" with the downed side, it would be beneficial to reduce the torque/weight stress on the good drive to get on plane. The last thing you want to do is break the good side.
I did this once with a drive that was knocking really bad. I used as little as possible to pop the boat up on plane.
I got everything moving and set with the good engine/drive, and started the engine with the knocking drive; engaged forward for a few seconds, just long enough to pop it up on plane. Then killed that motor and trimmed it out.

Taking the downed side prop off is a tremendous drag reduction. But I've never had to do it.

Couple questions to help you get in the ballpark:

What’s the slowest the boat will stay on plane?
What’s typically your cruising RPM?
What gear ratio are you running?

Just got my buddies Formula 330 SS on plane on 1 a couple weeks ago, when we were pulling it for the winter. Does have B3 drives though.
Was also able to get my old Bravo driven 33AVS on plane on 1. It did take a lot of finessing though.