The lake also has this problem and they have weights

           that they slide in and out of compartments in the front and rear.
           Ken Welter


       Ken,
       I thought of a movable weight some time ago but looks like someone beat me
       to it. My thought was a tube with the weight internally or externally of the
       tube, with the weight being slid backwards and forwards, as and when
       required, operated by a trim wheel system.
       George (down under)


   -------------
   Nat Puffer used such a system when he was testing the Cozy-IV effect
   of CG on stalls and flat stalls.

   Bill Schertz
   KIS Cruiser # 4045


Weight shift has been around since the 30s, maybe earlier.
Concord shifts its fuel load back and forth between tanks in flight to account for trim change
FWIW, Dave McC


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