help with cruise speed
01-17-2007 | 06:07 PM
#11
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Joined: Mar 2002
Posts: 5,143
Likes: 1
From: Cajun Country
Re: help with cruise speed
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...
32 Concept CC with 300XS's, 8 foot beam and is about 8KLBS fully loaded...
01-17-2007 | 08:29 PM
#12
Thread Starter
sandman
Joined: Mar 2006
Posts: 284
Likes: 0
From: rockingham, nc
Re: help with cruise speed
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.
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.
01-18-2007 | 07:10 AM
#13
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Joined: Mar 2002
Posts: 5,143
Likes: 1
From: Cajun Country
Re: help with cruise speed
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.
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.
01-18-2007 | 09:54 AM
#15
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Joined: Oct 2000
Posts: 1,382
Likes: 3
From: Spicewood, Texas USA
Re: help with cruise speed
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.
