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Propellosaurus


Terence Lynock
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Hi Pirune
I found a local supply of an alternative to Blue foam, Jewson stock cavity insulation board called …..Recticel cavity batts. It is an extruded polystyrene with foil both faces. The Foil is easy to removed. The foam is very light weight. When sanded there are a few open cells but they can be filled with one fill polyfiller.
 
I then glass clothed is with 0.6oz cloth and Ezee coat by Delux Materials.

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  • 2 months later...
Test flew on Saturday last week with recommended set up and movements.
 
She would not clime and control was almost impossible and she crashed, braking her neck and tail.
Solution move motor thrust line through C of G
 

Added another sheet on top, curved to give a wing profile and increased the ailerons by 75mm.
 
Result she flies …….
 

Now to paint
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  • 3 weeks later...
  • 2 months later...

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