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Need Some Prop Help

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Old 08-26-2007, 01:21 AM
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Default Need Some Prop Help

Hi everyone I'm hopeing someone can help me out here i have a 36 Carrera with tripple 275 verados i was running it with 23 m+ the boat was only getting around 5600-5700 rpms and 56mph i recently changed the props to bravo 1 22 and i'm getting a little more rpms but about the same speed. what can i do to get a little more speed and more rpms?r
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Old 08-29-2007, 09:57 AM
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Found this thread.....this is not cut and dry. So here we go....Can you tell me the performance data on the 22P Bravo I props. Tell me what you liked and didn't like about the way the boat behaved and performed.

What is the year of your hull?
What gears in the 275's?

Julie
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Old 08-29-2007, 12:39 PM
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So assuming a little more RPM means 5800ish at 56 mph, with 1.85 (thanks MarylandMark) you have 10% slip. The range on a Vee Bottom with a 4B is 10-14% for a norm. So other than your RPM being a little low your doing pretty well. So labbing the propeller might be the best thing to do in your situation. This will increase the RPM 250 and a few more on top should come with it.

Julie
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Old 08-29-2007, 10:46 PM
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Hi Julie,

thanks for helping me out here. the hull is new 2007 and the verados are 2006, 1.85 gear the boat handles well it planes out in just a few seconds but the top speed is where i was hopeing i'd be in the low 60's. am i asking for to much?
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Old 08-30-2007, 04:28 AM
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Getting the rpm may the key to the top end. Those motors really like to turn a lot of rpm. I'd like to see them turning up around 6200. They really seem to run thier best when at the upper rpm range.
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Old 08-30-2007, 09:38 AM
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The 275 verado turns up to 6400RPM. Best horse power and touque on the motors are at 6250. If you dial a wheel in at 6250 then you are going to be right. The Merc Rev 4 is the ticket on most CC with verados. My 25 Rev 4 was 7mph faster than my 24 B1 on my CC.

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Old 08-30-2007, 06:26 PM
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crb76 is right on the money!

I owe you a call Clark, hope all is well! Mark's 28's went out yesterday.
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