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-   -   X dimension and prop shaft height for 3's (https://www.offshoreonly.com/forums/drives-lower-units/280561-x-dimension-prop-shaft-height-3s.html)

Unlimited jd 07-12-2012 05:46 PM

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.

Unlimited jd 07-13-2012 10:54 AM

Nothing?

Unlimited jd 07-15-2012 01:41 PM

someone must have an idea ? I was told by one person 3-4" below running surface?

fleg1 07-15-2012 03:13 PM


Originally Posted by lil red (Post 3730468)
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'

Unlimited jd 07-15-2012 04:38 PM

Thank you!! Glad ingot some kind of answer, is your transom notched?

FIXX 07-15-2012 04:45 PM

fixx
 
depend on the diameter of props your going to use..

Unlimited jd 07-15-2012 04:53 PM

i have a lead on some 16.5"x 26" 4 blades what would you suggest?

fleg1 07-15-2012 05:11 PM


Originally Posted by lil red (Post 3730530)
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!!

fleg1 07-15-2012 05:12 PM


Originally Posted by lil red (Post 3730541)
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..

Unlimited jd 07-15-2012 08:04 PM

depends if anyone buys my 174 blowers and i upgrade, as of right now about 590 each


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