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X dimension and prop shaft height for 3's

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Old 07-12-2012, 05:46 PM
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Default X dimension and prop shaft height for 3's
Putting ssm3's on my 40' hawk, the transom is notched and I'm considering short staggering the motors. What should I cut the x at for a good cruise and decent planing? I don't need every last mph out of it.
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Old 07-13-2012, 10:54 AM
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Nothing?
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Old 07-15-2012, 01:41 PM
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someone must have an idea ? I was told by one person 3-4" below running surface?
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Old 07-15-2012, 03:13 PM
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Originally Posted by lil red
someone must have an idea ? I was told by one person 3-4" below running surface?
I would say that's close.. Mine is 4.25 below the bottom and I get on plane just fine that's with a 32' boat you may need 5 blades in a 40'
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Old 07-15-2012, 04:38 PM
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Thank you!! Glad ingot some kind of answer, is your transom notched?
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Old 07-15-2012, 04:45 PM
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Default fixx
depend on the diameter of props your going to use..
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Old 07-15-2012, 04:53 PM
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i have a lead on some 16.5"x 26" 4 blades what would you suggest?
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Old 07-15-2012, 05:11 PM
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Originally Posted by lil red
Thank you!! Glad ingot some kind of answer, is your transom notched?
No I was going to notch the transom when I rebuilt the boat but I wanted a longer running surface so I opted to install extension boxes instead..

I couldnt get on plane with 3 blades after raising the x on mine!!
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Old 07-15-2012, 05:12 PM
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Originally Posted by lil red
i have a lead on some 16.5"x 26" 4 blades what would you suggest?
What kind of power will you have? that would really determine the pitch of prop..
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Old 07-15-2012, 08:04 PM
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depends if anyone buys my 174 blowers and i upgrade, as of right now about 590 each
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