Piper J-3 "Cub"

 
JP Gendron is presently building a 1/4 scale Piper J-3 from the SIG kit purchased from Great Hobbies
 
Scale: 1/4 (25%)
 Radio:  ???
Wing span 105"
Length 67"
Weight 14 - 16 lb (estimated)
Basic construction Balsa, plywood, spruce
Covering material Sig Koverall
Engine DLE 35RAcc  gas
Prop ?
The project was started in October 2015. To assist with shaping of the leading edge, JP made a
template, and carefully removed the material to suit with a 22 in sanding block. Otherwise, he reports
the build was quite straight forward.
 
Covering was completed in October 2016 using Sig Koverall. JP used Stix-it for the perimeter and
glued using a Protrim sealing tool.Trimming the Koverall was easy using his wife's hair spray, no
fuzzies or strings - and it smells good too!
 
To obtain the proper "curvature" of the covering at the fin, the instruction manual advised to cover
from top to bottom.  JP reluctantly followed the instructions in this case, but would do it the "normal"
way (cover from bottom to top) next time!
 
JP used two coats of Minwax Polycrylic on the Koverall after shrinking to fill the weave.
 
Clearly thinking ahead to next year's Float Fly & BBQ, a set of 46" Sig floats (also from Great Hobbies) are under construction. The big painting event is planned for May or June.
 
Bravo to JP for the excellent workmanship, and we look forward to more photos as construction proceeds!
 
Click on the images (below) to enlarge and read the captions...

(photos by JP Gendron)

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