Page 1 of 3 123 LastLast
Results 1 to 10 of 23

Thread: J3 kitten

  1. #1

    J3 kitten

    I am restoring a J3 kitten, needs a whole new wing built. I have a Rotax 337, set up with dual bing 54's. fuselage is done. I'm alittle bit worried about making U/L weight. Any help and/or advice I can get from Kitten flyers past or present would be greatly appreciated. (anybody got plans?) Thanks,patrick.

  2. #2

    Join Date
    Nov 2011
    Posts
    6
    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 .

  3. #3

    Join Date
    Jul 2011
    Location
    Clarklake, MI
    Posts
    1,268
    Quote Originally Posted by jimtho View Post
    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 .
    Jim, just out of curiosity, how much does your airplane weigh now in current form?

  4. #4

    Join Date
    Nov 2011
    Posts
    6
    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 mph.
    I have two tanks holding a total of 10 gal of fuel.

  5. #5
    Difficult to make U/L weight? Darn tootin' Barely sqweeked by as built with a 227, no flight inst' or brakes. Your Kitten sounds like quite a machine! Did you do any airframe mods,(besides the fastback), to keep the strength/weight relationships as designed? When I put the new tubing in I kept the notchback for anumber of reasons. My thinking is that making weight with a "real" airplane wasthe Kittens' original purpose so I'll try. Composite wing? We'll see.

  6. #6

    Join Date
    Nov 2011
    Posts
    6
    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

  7. #7

    Join Date
    Jul 2011
    Location
    Clarklake, MI
    Posts
    1,268
    Quote Originally Posted by jimtho View Post
    My J-3 Kitten (fast back version)
    Hey Jim, you have any pics of you J-3 Kitten? I don't think I've ever seen the fast back version. If not, do you know of any pics on the internet? I'll look later but if you know any links I'd appreciate it.

  8. #8

    Join Date
    Nov 2011
    Posts
    6
    I have pictures but do not know to attach to this reply.

  9. #9

    Join Date
    Jul 2011
    Location
    Clarklake, MI
    Posts
    1,268
    Quote Originally Posted by jimtho View Post
    I have pictures but do not know to attach to this reply.
    Thanks Jim. I googled pictures for "J-3 Kitten fastback" and variations thereof. I'm guessing there's not many fastback versions or the ones that have them don't own cameras.

  10. #10
    youtubej3kittensoundsawesomefast anybody ever see balanced tailfeathers like this on a kitten before?.......good low speed maneuverability,I think.
    Last edited by patrickbrockhaus; 06-13-2012 at 08:07 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •