help with cruise speed

[throttleup]

Originally Posted by marylandmark

Which would be? We have emailed in the recent past about this. 26 or 28 Bravo I 4 blade is what I was thinking and you said it was a good prop but never really said if that was the best prop...

32 Concept CC with 300XS's, 8 foot beam and is about 8KLBS fully loaded...

The Bravo 1 prop will run well on your boat. It is a good prop choice. Testing with different pitch props will give you first hand results and then you can decide what runs best on your boat. Let us know if you need props to test.

[sandcraft]

Originally Posted by throttleup

You will want to reduce the pitch to raise the RPM. I would stay with the 4 blade props as they seem to run well on your boat.

Testing will ultimately give you the best set up for your boat. Is the max HP 700 or is it 700@4986? I would run with as small a pitch prop as you can. The smaller pitch props will ease the stress on your drives, which are being pushed to the limit with your power. If your motors make more horsepower at rpm above 5000 then you should pick up some top end speed with a smaller pitch prop.

We have props available for testing if you need them.

That was peak hp. Peak tq is 745@4031. I agree testing is the only surefire way to do things, I just needed to know what direction to go in. I think I saw the last of the decent boating days here in NC, and probably wont start up until spring. Thanks for the help from all of you and will be in contact when the weather turns nice again.........Casey

[throttleup]

A good rpm to shoot for will be in the low 5000 range. You are close now.

When the weather turns nice again a little less pitch will bring the rpm right where it should be. It may be worth while to try a set of stock 26 Bravo 1's to see what results you get, then go from there.

[throttleup]

Let us know when you are ready. We have a full line of Bravo I test props.

Julie

[bobl]

Sandcraft, it appears you are experiencing a lot of slip at 3000 RPM, which is pretty normal. If this is truely a speed you want to improve on you may want to look at adding drive spacers to lower the drives down some. This will definitely help your low speed cruise but MAY cost some top end speed. Hydro P5X props will also help low speed cruise. It's all a compromise. You have to decide what is most important to you.