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change from thru hull to drive water pick-up, speed ?

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Old 07-15-2010, 03:23 PM
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Default change from thru hull to drive water pick-up, speed ?

somebody along the way installed a thru hull with a large bronze scoop/grate on my boat, no idea why, question is how much speed does that drag cost ? really considering going back thru std bravo drive ?? thanks Rob
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Old 07-15-2010, 03:59 PM
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Originally Posted by ezstriper
somebody along the way installed a thru hull with a large bronze scoop/grate on my boat, no idea why, question is how much speed does that drag cost ? really considering going back thru std bravo drive ?? thanks Rob
It can be substantial.
Steve
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Old 07-16-2010, 06:02 AM
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Originally Posted by smiklos@sunprint
It can be substantial.
Steve
Agreed, but depends on how fast you're going. At 70 MPH in your boat for instance, it's probably less than 1 MPH. At over 100 MPH, it gets more significant in a hurry.
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Old 07-16-2010, 07:05 AM
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When I bought my Corsa it was a successful A class boat (Hog's Breath). We bolted a HP 500 in it winter of 1997 it went 73.4 MPH. We removed a pretty well done transom pickup and netted a 1.7 MPH increase. In the end the boat set the Kilo at 81.034 in Sarasota.
Sweat the little stuff!
Steve
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Old 07-16-2010, 07:06 AM
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The water going through the drive also helps cool the gear oil.
Steve
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