Originally posted by jkn
SwingWing,
How do you suggest I make the wing's pivot mechanism , taking in account that I plan to use a servo to trigger it ? I definitely dont want the servo to bolster the load. I know Im at a disadvantage here as I havent built the original Estes kit.
The booster. I've seen a couple pics and somewhat see it's 2 fin design but dont quite understand how I should go about constructing it at this scale ? Any suggestions ?
Thanks all !
JKN
I made my wing pivot just like the Estes version, just scaled up 3x. I didn't scale the material thicknesses, or it would be made of 3/8" plywood. ( I used 3/16) It is actuated by the pop-pod pulling a dowel out of the end of the wing, and then an elastic thread (rubber band)pulls the wing around.
Take a look at the Estes plans at jimZ's sight if you have not already.
https://www.dars.org/jimz/est1265.htm
I have a copy of the originals from around 1976.
I also drew the patterns in 2D cad, so I could easily scale them to any size I want. Let me know if you want them and what form works best (.dxf, .pdf, .tif, etc.)
The booster is actually a pop-pod, that ejects out the rear and floats down on it's own chute. I offset the motor slightly to try to conteract the tendency of the wing to produce lift during boost, angling the boost to the wing side. You can overcome this with a little down elevator via the R/C gear.
The 3x SWT is 3 1/16" in diameter, 48" wing span and about 68" Overall length. It has a single 29mm mount
The attached is the motor mount end with the pod installed