RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build)
Current status:
I have the upper cabin section almost complete. I still need to drill the holes for the wing bolts (8-32) and lighten up the center section but it is shaping up. The the vertical portion of the front former will be cut away from the area of the door but I want it as a complete part during assembly, to ensure everything stays straight.
The upper cabin assembly represents the best method I could come up while minimizing the amount of fabrication needed to make the wings fit. The wing joiner made of ply, and stock to the kit, will prevent the cabin from pulling apart should the airframe be subjected to negative G loads. The ply formers making up the center most portion of the fuselage will also resist compression found during normal flight.
Photo shows a dry fit of the parts.
More to come.....
SunDevilPilot