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     1. 03:22 PM - Re: Float performance tool (John A. Nielsen)
 
 
 

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Time: 
03:22:15 PM PST US
From: 
"John A. Nielsen" <john@nielsenford.com>
Subject: 
Re: Float performance tool
      
      
      I entered my plane's data and it predicted 11 seconds.  Proven by this 
      video taken Sunday, my take off is more like 6 seconds.
      http://www.youtube.com/watch?v=iEQ-1yzL8XE
      John Nielsen
      Bloomer  WI
      Challenger II on Puddle Jumper Amphibs
      
      Peter C wrote:
      > Would any of you guys on floats provide some examples of what take-off 
      > times
      > you are getting?
      > The attached spread sheet contains a simplified version of the formula on
      > the Stinson site. This one just multiplies wing loading, power loading and
      > float loading times a constant.
      > 
      > The two Rans examples look pretty good in that they are close to my actual
      > numbers. The 170 number is also pretty close. The original formula gave 
      > me a
      > time of 5 or six seconds which is way off. If you play with different
      > weights this one seems to work. Not sure if variations in hp work as well.
      > Since I'll also be trying two more sets of floats on this plane the affect
      > of buoyancy will also be stest.
      > Peter
      > 
      
      








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