Fun 3 (oz10873)


Fun 3 - plan thumbnail image

About this Plan

Fun 3. Radio control sport model for .40 power.

Quote: "An exciting, easy-to-build sportster, for .40 power and full-house control. Fun 3, by Steve Allanach.

THIS MODEL is the third in a series that I have built to fulfill certain requirements, namely to be as economical to build as possible, and to be easy to transport. I also wanted to use a rear-induction HP.40 for the powerplant, as I had recently acquired one of these. The wing is an all built-up structure for lightness. (A foam wing has been used on some of the prototypes, and was about 1/4 lb heavier - though not having any significant effect on the model's flying characteristics). Lastly, wingtip plates were added mainly for appearance, although they may have helped the low speed characteristics somewhat.

Anyone who has built and flown an RC model before should have no difficulty in building or flying Fun-3, but it is not at all suitable for complete beginners. As a first low-winger it should be quite okay, provided an experienced pilot is on hand, ready to take over in an emergency, for the first few flights.

Fun-3 came well up to what was expected of it, having been built very cheaply, and can be transported in one piece on the back seat of my Mini saloon. I have even managed to win one competition and place 3rd. in two others with it during the past season, so it must have some-thing to commend it. The real point, though, is that it's a really grand fun model - build a couple of 'em during the winter months and enjoy yourself no end next flying season!

CONSTRUCTION: Wing. It is best to build the wing first, so that it can be used to align the fuselage with later on. It is constructed on the egg-crate principle, with the ribs all slotting onto a single main-spar. First cut out the mainspar from one edge of a 48 in long sheet of 1/8 balsa and notch it for the ribs. Epoxy the one-piece undercarriage block to the spar forst of all. The wing ribs are produced by the sandwich method..."

Fun 3, Radio Modeller, January 1974.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.


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