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Originally Posted by MILD THUNDER
(Post 4522667)
How does she carry at high speed? Does it seem like its running wet ?
Wonder where the 900sc #6 stagger 42s were for PS height? |
Originally Posted by Thewhitemongoose
(Post 4522725)
Mild Thunder has it right 2 inches under the hull is where the shaft should be especially on staggered motors, that's standard, 80% prop below the hull thrust and 20% prop above the hull lift, even to the hull, is actually -2, 67% prop below the hull thrust and 33% prop above the hull lift, with a 17 inch prop, that's a 65% increase in stern lift that the 42 lightning does need with the staggered motors and 5-blade props. For mine at 67/33 a 4-blade slips 23.39 and a 5-blade slips 36.64, because the 5-blade has 25% more lift than the 4-blade, at 80/20 the 4-blade slips at 18.71% and the 5-blade slips at 11.45%, currently I run at 86/14, a 4-blade will blow out and not stay on plane and the 5-blade slips at 8.97%, that is what I look for when fitting a prop when one less prop won't stay on plane and blows out.
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I would be interested to hear the outcome in that prop change ,I have been running a 17 x 35 4 blade and I am going to try a 18 x 32 5 blade to see if it calm's the boat down a little
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I'll let you know how it goes.
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Originally Posted by Unlimited jd
(Post 4522920)
Standard for what? I haven't seen any that deep.
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I think JD was referring to a stagger setup being that deep.
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