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Forum: Powerplay

05-09-2011, 06:36 PM

Replies: 2,109

Sticky Powerplay Boats

Views: 1,323,640

Posted By nautdesign1

This is yet another reason why you see rough...

This is yet another reason why you see rough water V-hulled race boats with staggered engines-provided of course they have steps…[QUOTE

Thanks, great info on CG -- the term is thrown around all...

Forum: Powerplay

05-07-2011, 02:17 PM

Replies: 2,109

Sticky Powerplay Boats

Views: 1,323,640

Posted By nautdesign1

Sixmassive -you’re barking up the wrong tree...

Sixmassive -you’re barking up the wrong tree here. Metacentres are generally utilized for stability calcs in the lateral domain (roll stability). 302sports’ issue is not in this “transverse” domain...

Forum: Powerplay

05-06-2011, 11:23 AM

Replies: 2,109

Sticky Powerplay Boats

Views: 1,323,640

Posted By nautdesign1

It’s essentially a simple summed Mass X Distance...

It’s essentially a simple summed Mass X Distance calculation. For round numbers, if:

1) The boat AU weight was say 8,000 pounds;
2) The combined weight of your engines (only) was say 2000lbs;

...

Forum: Powerplay

05-05-2011, 10:44 AM

Replies: 2,109

Sticky Powerplay Boats

Views: 1,323,640

Posted By nautdesign1

...and a sizable bow tank adds a big polar moment...

...and a sizable bow tank adds a big polar moment of inertia which can have a negative impact on pitch stability. Shifting the large masses (engines) to achieve the desired Lcg position (with a small...

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