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Author Topic: Measure deadrise  (Read 660 times)

July 02, 2010, 10:15:36 AM
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orb

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Measure deadrise
« on: July 02, 2010, 10:15:36 AM »
Check out this excel spreadsheet with a formula to figure deadrise
http://airmartechnology.com/uploads/ins ... ulator.xls
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70\'s  240 seahunter(rebuilding now)
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\'77 22-2 (rebuild on hold)
1997 19\' sundance 70 merc
July 02, 2010, 10:50:38 AM
Reply #1

John Jones

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Re: Measure deadrise
« Reply #1 on: July 02, 2010, 10:50:38 AM »
Cool.
I just use an angle finder for deadrise but the transducer bottom coverage calculations are what interests me.  Much simpler than trying to dust off geometry formulas from 45 years ago.

 :thumright:


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Niccolo Machiavelli
July 02, 2010, 04:24:42 PM
Reply #2

seabob4

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Re: Measure deadrise
« Reply #2 on: July 02, 2010, 04:24:42 PM »
Law of Sines...

Sin90/Hypotenuse=SinX/Height, where X=Deadrise.  Know the Hyp dim, Height dim, and you have your deadrise angle...
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Corner of 520 and A1A...
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