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Old 02-15-2007, 02:47 PM   #1
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Inbord or Outbord Rotaion?

What is better,if i drive inbord or outbord rotation?I have a 33 feet Offshore with two 502 EFI Mercruiser and TRS-Drive with 19-Spline shaft.The Engines are LH Engines
thanks Andreas
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Old 02-16-2007, 10:16 AM   #2
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For all around use its usually set-up with outward rotation.....inward would give you a little more speed (barely) but your lowspeed handling would suffer around the docks as the propwash would cancel each prop out......
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Old 02-16-2007, 11:33 AM   #3
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in general.....for the most part most dont bother having the props turn inwards unless they are trying to get every last bit of speed they can out of the boat.

But there are exceptions to this as well.....some boats react better in reguards to carrying the nose when running with the props turning inwards....it wont hurt anything as far as trying it out so i say do it both ways and which way you like it better.

On a TRS application you need to swap the entire drive around with the props.....on a bravo setup you can swap props and move shifters the opposite way...
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Old 02-16-2007, 07:15 PM   #4
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Originally Posted by marylandmark View Post
Thanks!

I was wondering how much difference it would make- that last 2% or like 10%.
Does it matter on fishing boats?
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Old 02-20-2007, 06:08 PM   #5
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ice133,

What direction are you turning them and what kind of mid and WOT performance numbers do you have?

Also, what are your ultimate performance goals?


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