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     1. 02:12 PM - Sea/Float Plane empty vs. gross weight considerations (Chris In Madison)
 
 
 

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Time: 
02:12:47 PM PST US
Subject: 
Sea/Float Plane empty vs. gross weight considerations
From: 
"Chris In Madison" <cowens@cnw.com>
      
      
      Afternoon all,
      
      While at Oshkosh, I spoke with Paul Seehafer regarding the suitability of the LMA
      Super Cub replica as a sea/float plane.  We briefly discussed the empty weight
      versus the gross weight rating of the aircraft and whether or not the useful
      load would be grossly affected while on floats.  One of the phrases Paul used
      was the ability of the airplane to "lift its own weight" being a reasonable
      criteria for an aircraft's suitability for life on floats.  
      
      The LMA Super Cub replica is specified by the manufacturer as about 690 lbs. empty
      with an 1100 lb. gross weight when using a Rotax 582, and the use of a larger
      engine will obviously make the airplane weigh more.  Builders using larger
      Continental engines and the like are using stronger landing gear and some other
      updates to bring the gross weight up a bit, but the typical GW is about 1200
      lbs. for the ones I'm familiar with, which seems to be along similar lines as
      a stock J-3.  But I'm not sure what the empty weight of a stock J-3 is.  I did
      see at least three J-3s on floats while at OSH, but I didn't see how many people
      climbed out of them.
      
      What are some of the criteria I should be considering when determining whether
      or not an airplane will work well on floats or not?  Any experiences to share
      or online resources to reference?
      
      Thanks and best regards,
      Chris
      
      --------
      Chris Owens
      Waunakee, WI
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=126447#126447
      
      








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