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Jumping waves trouble!

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Old 05-21-2012 | 10:39 AM
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Default Jumping waves trouble!

I just got done with my cigarette bullet project it has 23 pitch 3 blade prop. And when I jump it (props out of water) I pull back on the throttle until the boats back in the water and no mater how fast or slow I push them down as soon as I do it the rpm goes up to 6,000 ad in not just the guages you can hear the motor scream so I have to stop and plain out again. Does any one know what it could be do I need bigger props??? The boat had these props before I owned it..
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Brett
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Old 05-21-2012 | 10:47 AM
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Originally Posted by black thunder 46
I just got done with my cigarette bullet project it has 23 pitch 3 blade prop. And when I jump it (props out of water) I pull back on the throttle until the boats back in the water and no mater how fast or slow I push them down as soon as I do it the rpm goes up to 6,000 ad in not just the guages you can hear the motor scream so I have to stop and plain out again. Does any one know what it could be do I need bigger props??? The boat had these props before I owned it..
Thanks
Brett
Can't imagine that pitch being so far off for that boat. Maybe a 4 or 5 blade would be better or possibly a larger dia prop. That's alot of boat for a 3 blade.
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Old 05-21-2012 | 11:00 AM
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that three blade is pretty worthless for any performance application. You need B1's minimum, could also be much of your problem.
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Old 05-21-2012 | 11:04 AM
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Yea, those 3 blades probably run faston the big end, but they dont bite like a 4 blade. I would be looking at B1's for the boat. You will pick up some mid rande, and have a lote more bite in the water.
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Old 05-22-2012 | 05:59 AM
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From: harrison twp. mi
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I had a scarab do the same thing years ago, went to 4 blades problem solved.
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Old 05-22-2012 | 06:23 AM
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my hawk did this the other day with the bravo 1's but my x is too high causing a fair amount of slip %
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Old 05-22-2012 | 06:59 AM
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From: Rhineland MO, LOTO 5mm
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Brett, My old 32 BT with 3 blades would blow out all the time. Switched to 4 blade Bravo 1s and problem went away. A lot of these boats had high x dimension to run the number but it made it hard not to blow out with 3 blades. The 3 blades were faster though on top end. Hope this helps.
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Old 05-22-2012 | 09:22 AM
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More blades will probably fix your problem, But, Instead of pulling back all the way while your in the air, try to keep the motors & Props at the speed they need to be to re-enter the water smoothly. Like pulling back half way. this will let your drives live alot longer as well. I raced offshore using 3 blade Mirage props with a high X dim (Before B1's came out) and didn't have a problem as long as my prop speed was consistant with the boat speed on re-entry.
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Old 05-22-2012 | 09:41 AM
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Originally Posted by fastdonzi
More blades will probably fix your problem, But, Instead of pulling back all the way while your in the air, try to keep the motors & Props at the speed they need to be to re-enter the water smoothly. Like pulling back half way. this will let your drives live alot longer as well. I raced offshore using 3 blade Mirage props with a high X dim (Before B1's came out) and didn't have a problem as long as my prop speed was consistant with the boat speed on re-entry.
+1. Sounds like he may need a little more seat time in rough water. I'm running old mirage 3 blade props with no problems. A 4 or 5 blade is also going to be harder on drives on re-entry.
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Old 05-22-2012 | 11:38 AM
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Originally Posted by TexomaPowerboater
+1. Sounds like he may need a little more seat time in rough water. I'm running old mirage 3 blade props with no problems. A 4 or 5 blade is also going to be harder on drives on re-entry.
He's got more rough water seat time in boats than you do on your toilet.
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