SCAT Electronic News 15 July 1999

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SCAT Electronic News 15 July 1999

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Odd strands-revisited
New design for kids

Odd strands-revisited
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.

     Apparently, my description of the solution was not graphic enough.  
     What I suggested was merely replacing one strand of 1/8" rubber by two 
     strands of 1/16" providing a motor of 26 strands of 1/8 and two 
     strands of 1/16" from the same batch of rubber.  The stripping 
     involved is minimal.  Each full 35-gram motor would require only about 
     28" of 1/16.  I can strip several yards of rubber in just a few 
     minutes.  No way would I attempt to strip the whole 35 grams to 1/16.  
     By the way, it isn't even necessary to strip it evenly to provide 
     exactly 1/16.  I observed the Hungarian indoor team at a World Champs 
     and they used two different widths of rubber with two knots to make 
     their motors!  It takes a little more math to come up with exactly 
     34.3 grams of rubber before lube, but the calculations are simple.
     Chuck


New design for kids
===================

In addition to my interest in the Baby Bee 40 event, I have been with egg
cartons too. Attached is a photo of a simple model made from the top of a
twelve egg carton (wing/pylon) and an eighteen egg carton (stab & fins.
Fuselage is balsa and the prop is from a Delta Dart or Testors Strato
Streak.  It flies very well on a loop of 1/8" rubber.  I will e-mail plans
(though they are scarcely necessary) to anyone interested.  My address is
This email address is being protected from spambots. You need JavaScript enabled to view it. .

Some notes about the design:  1.) The tripple fin is necessary for lateral
stability.  2.0 The center of the carton used for the wing is cut with a
slot for the motor stick thus becoming a pylon.  3.)  1/16" incidence is
built into the wing, none in the stab. 4.)  Polyhedral is achieved by
holding a ruler over the foam and bending it.  If the foam cracks on the
bottom, rub elmers into the crack and let dry.  5.)  Fuselage is 13.5" long,
with 9.5" between nose and rear hook.

Ross Jahnke


.................

Roger Morrell 

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