Hang the boat in a travel lift with just one sling. Lift it off the trailer and move the sling until it lifts level. That is the boat CG. Start a couple of feet forward of the engine bay.
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Originally Posted by Wahoo ATV
(Post 2970931)
Hang the boat in a travel lift with just one sling. Lift it off the trailer and move the sling until it lifts level. That is the boat CG. Start a couple of feet forward of the engine bay.
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If you know the bare hull cg and where you want the target cg to be, then simple math and known weights will let you determine driveline length (along with proper fuel tank, batteries, trim pumps, oil tank, etc placement).
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Originally Posted by Sean H
(Post 2971021)
If you know the bare hull cg and where you want the target cg to be, then simple math and known weights will let you determine driveline length (along with proper fuel tank, batteries, trim pumps, oil tank, etc placement).
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Originally Posted by CcanDo
(Post 2971041)
Sean, in your opinion, why do two or even more hulls from the same mold with the same components run and handle different from each other ? Is it anything obvious ? And, is the CG or prop shaft depth more critical ?
The human factor... I would say no two custom boats are identical (lay up/rigging/etc) The cg and prop height are both critical, it would be hard to determine correct propshaft height without a boat that runs balanced. Also, remember there is a dynamic CG as the boat runs and the tunnel creates lift. |
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