Brett.... the Rev's finally showed up late today...

VERY interesting looking pices here, may have to raise the engines, by the looks of the trailing edge...

kinda heavy though at 15.5# each for these two strokes maybe??

JH

crb 76, stern lift.

BUIZZILA, glad they are finally there. We have not had issues with OB applications, either at BBLADES or while I was at Mercury. We kept records of those warranty issues and there were none. The props are only 14 5/8" diameter. If the lower unit on OB's would allow large blade area 18" diameter propellers, and the weight could create more centrifugal force, there could be more problems. Especially if the balance was off. This is why we stress balance on all propellers! That is the second largest reason for gear case failure. Second only to prop strikes. Cable adjustments and rpm setting bring up third place.

I have a Baja Hammer 454-310 hp and the boats runs 64 on GPS with the stock prop. Can anyone tell me what would give me more top end without losing out of the hole times?
Gary

Thats a broad question. They are going to want to know the length of the boat, open or closed bow, as well as the RPM at that MPH, and what type and pitch prop you have now. Also if the numbers don't add up for the speed and or prop slip, they may want you to verify your Tach is accurate.

gij5001,

Please give us some more performance numbers including rpm at WOT and that speed. The propeller model and pitch plus gear ratio. We will look at those and see if there are some alternatives for you.

Sorrry, I was so Vague on my question. The boat is a Baha Hammer - closed bow that weights 3,500 lbs. I has a 454/310hp and a Bravo One Drive. Its currently running a 23
stainless prop from the manufacturer ( not sure of the name) and on the top end is hitting 64 mph on Gps at 4,500 rpm's. The altitude is 1,000 feet.

gij5001,

I was going back through the threads and I see I didn't respond to your last post. Sorry.

I'm guessing your gear ratio at 1.5:1? If so, the slip % for your boat is almost too low to believe. Are you using gps speed readings or a speedo?

Rev 4, 48-857030-23 right hand. This prop has been labbed by CHP to 24" pitch, a bit of cup was also added. $250 plus shipping. Absolutely perfect condition, only about 3 hrs run time on it.

I need a 21p R/H Rev 4. Only looking for used one in top shape.

We only have new currently. $450

SFOcean, the blade geometry has also been changed on that prpeller.