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  1. Thread: J3 kitten

    by jimtho
    Replies
    24
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    74,475

    No, but knowing what I know now, I would have...

    No, but knowing what I know now, I would have made the main spar 1 in. higher since there is room. According to Tom Rhodes in "Stress without Tears" the main spar carries 2/3 of the load. My...
  2. Thread: J3 kitten

    by jimtho
    Replies
    24
    Views
    74,475

    I have pictures but do not know to attach to...

    I have pictures but do not know to attach to this reply.
  3. Thread: J3 kitten

    by jimtho
    Replies
    24
    Views
    74,475

    I bent the axles during early landings and made...

    I bent the axles during early landings and made them solid by welding in a 4130 rod that just fit inside the axle tubing. I also replace the bunge cords with springs from Aircraft Spruce
  4. Thread: J3 kitten

    by jimtho
    Replies
    24
    Views
    74,475

    My J-3 Kitten (fast back version) with Rotax 447,...

    My J-3 Kitten (fast back version) with Rotax 447, starter, battery, and wheel pants has a net weight of 410 lb. and a gross weight of
    625 lb. It cruises at 65-70 mph at 5500 rpm and stalls at 40...
  5. Thread: J3 kitten

    by jimtho
    Replies
    24
    Views
    74,475

    Having built and currently owning a J-3 Kitten, I...

    Having built and currently owning a J-3 Kitten, I can tell you that it is extremely difficult to meet Part 103. Your best bet is to do as I did and register it .
  6. Replies
    53
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    56,116

    I agree with Allen. Whe n I built my Flut-R-Bug,...

    I agree with Allen. Whe
    n I built my Flut-R-Bug, I was advised by other experienced builders to start with the tail section. By the time I reached the fire wall, my welds were really good. Everyone...
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