Happy-20 (oz2998)


Happy-20 (oz2998) by M Kato 1978 - plan thumbnail

About this Plan

MK Happy-20. Radio control trainer. For 3 channel RC and a .19-.25 engine.

Direct submission to Outerzone.

Quote: "the M.K happpy 20 needs a larger rudder moving surface, it does fly very well though."


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Happy-20 (oz2998) by M Kato 1978 - model pic

  • (oz2998)
    by M Kato
    from MK
    48in span
    IC R/C Trainer Kit
    clean :)
    formers incomplete :(
  • Submitted: 03/06/2012
    Filesize: 718KB
    Format: • PDFbitmap
    Credit*: razegelin
    Downloads: 4827

Happy-20 (oz2998) by M Kato 1978 - pic 003.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 004.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 005.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 006.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 007.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 008.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 009.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 010.jpg
Happy-20 (oz2998) by M Kato 1978 - pic 011.jpg

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User comments

Thanks again to razegelin, have added some extra photos [more pics 003, 004]) from the original box art for this model.
SteveWMD - 04/06/2012
Does anyone know what the differences are between this and the Happy 20S? A Happy 20S sold on eBay recently but while the listing was still active I noticed that the 20S had a bigger rudder which would answer razgelin's want for more rudder. I also noticed it said on the box that it was for 3-4 channels which presumably means that ailerons were an option too. I really like these as trainer models, particularly with the covering schemes copied from the pattern models of the day.
SimonPlatt - 03/04/2015
Hi, I saw you would like to have more pictures of the Happy-20 by M Kato. Recently a club member donated this plane to me, that happens to be the Happy-20 [see more pics 005-008]. Best regards.
HansMeijdam - 29/02/2016
Hi Steve I found a photo of a Happy 20 I built [more pics 009]. It flew really well, recommended
Jono - 28/03/2016
Oh, and another one [more pics 010].
Jono - 28/03/2016
Hi there. See attached photo of my 3rd build of the MK Happy-20 [more pics 011]. Now electric and flown today. Many thanks.
Jono - 07/05/2018
Yes the formers are not all shown on the plans but it is a basic rectangle for each so it won't be too hard to work it out from the top and side views on the plans.
Steve - 24/01/2023
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