Set up help! 37 OL
 

Last year I got the new to me boat and here were the results I saw before I had a major melt down. Running 34p bravo 1 props w bmax drives 1.26 ratio and imco lower. Best I saw was 5050 Rpm and 97 gps. It was dead flat water 3/4 tank of fuel and 5 people. If you calculate that w the Bamm slip calculator its 25%. Engines were about 925 hp ea.

Had a valve go and was down as of June 25th. Engines are getting rebuilt and Im going w about 725 hp per side. Where should I start w props? I was thinking of trying a 30p 5 blade and maybe even 28's. I want to get the slip numbers down into the teens and still need to talk to the builder as to max rpms I should be lookin for but wanna hear some thoughts.

on our 37 with 575 stag setup we ran 32 5 blades

I have a pr of 28P Hydromotive 5 Blades if you decide to go that route.

Call Dan. He is very knowledgeable and has his dialed in quite nice.:)

My issue is that I dont want to change the 1.26 drive so my pich is going to be fairly different.

Your initial setup seems like it was out of whack to begin with. I'd guess a 24p-26p for a starting point.

with that gear ratio, id start with 26's & go from there

Are you sure its a 1.26? All the Bmax's ive owned were 1.3. Not saying they dont make a 1.26, just have not seen one.

You need to change gear ratio. Way to much slip. Try and borrow props and recalculate slip. Maybe drives to high or over trimmed. Try larger diameter.

Do you have stand off boxes?

Pete, sorry to hear you had trouble with the boat, you didn't get much time out of those motors. As others have said, the setup on that boat is wrong. 97mph at 5050 with 925 per side ain't right.

I do have boxes and think I just got lucky. I talked to a guy on the east coast and he has a 37 w 675 KE engines w bmax drives and 1.26 ratio and Imco lowers. (this is almost my exact set up) He told me he is running 28p 5 blades and top speed of 94-95. A least now I have a starting point and somthing to shoot for.