At last, after about four months I am more or less finished and at Clayton on March 4 I hope to get her flying and then I can declare the build (and my building block) finished. (pic 1) The final job covering. I used ‘Esaki’ on the fuselage with the grain vertical to avoid ‘starved horses’ but I don’t think I need have bothered. I think the longerons would stand a full water shrink but a light steaming seemed to have the tissue taut enough. The wing and tailplane were an annoying hitch. The intention was to cover with ‘Mylar’ but the canister of ‘Spray Mount’ would not yield the smallest drop of its precious contents. I covered them with condenser paper fixed with diluted PVA which is not what I wanted.(pic 2) That is why I said I was more or less finished because I now need to build a new wing and tail and cover them with film. (I have bought another ‘Spray Mount!)
Most of the build is bog standard but the mounting of the tailplane and fin may not be common. There is a bamboo post about 0.05 diameter glued on the end of the fuselage. There is a paper tube on the trailing edge of the fin which slides on the top of the bamboo. A short piece of 0.009 piano wire is bent double and glued to the leading edge of the fin with the bent end pointing down (just for safety). The bend end is pushed into a piece of soft 1/32 balsa in the top of the fuselage. Fin offset can be varied for turn trim. (pic 3). This underneath view shews the tailplane leading edge held under a ledge and a hole at the trailing edge goes over the bottom of the bamboo. A very small band goes from top to bottom of the bamboo (pic
. Tail incidence can be changed with packing between the top of the tail and the bottom of the fuselage.