 |
 |
 |
||||
 |
|
|
|
|
|
|
 |
||||
 |
||||
 |
||||
 |
||||
 |
||||
 |
||||
 |
||||
 |
||||
 |
||||
|
|
|
|
|
 |
||||
At one of our recent indoor meetings, a clubmate brought along a very nice little model, the SweetDream, which flew very well in our small school hall . It is one of a range of kits by Stevens Aero which are sold in the UK by Micron Radio Control. They are traditional kits inasmuch as they are built from balsa, but the parts are precision laser cut, unlike the die crunched or even printed sheets I remember from the fifties. Anyway, I spent several indecisive hours before picking out this one, the Pietenpol Sky Scout, a model of a 1928 homebuilt. This first picture gives an idea of how the laser cut parts fit together. The cutting is very precise, lending itself to the 'dry fit then wick in thin cyano' method of building. Unfortunately I became sensitised to cyano fumes many years ago and generally only use the odourless formulation which is rather too thick for this approach. So, with the extractor fan on, I used regular cyano where necessary and hoped for the best. I fared pretty well although the last stages of assembly which necessitated some close quarter work with the wing struts did leave me snuffling and wheezing for a few days afterwards. |
||||
|
|
|
|
|
|
||
|
|
|
Not only does this unltra-clean laser cutting save time and result in a self-jigging assembly, it also enables parts to be cut that I couldn't possibly cut by hand. Have a look at this turtle deck former from 1/20in balsa and imagine trying to cut those stringer notches without breaking off any of the bits in between - rather you than me!
Another benefit is that there's next to no sanding to be done. The exception is the top of the nose around the dummy engine which is built up of layers of 3/16in balsa. This is pretty much the last stage in fuselage construction so at this point the whole thing is sanded back to final shape.
The wing construction is straightforward - so much so that I forgot to take any photos. However this pic of the finished model shows the construction. The underside of the wing is left uncovered and was given one coat of Humbrol enamel straight onto the wood. The rest of the model is covered in Solite. Struts, radiator and dummy engine were likewise given the one coat treatment. The pilot is supplied as a laser cut piece of 1/20in balsa and two decals!
At the time of writing, the model has yet to fly, so I'll report back in due course. |
||
|
|
|
There's some nice detailing on this model, particularly around the front end. The dummy engine is built up from layers of pre-cut balsa and cleverly incorporates the holes for the aluminium tube exhaust stubs. Holes are also provided for ignition wiring but, shock horror, I had to find some suitable wire myself! The radiator is a piece of balsa with the front and back frames cut from thin ply. By painting these before assembly, even I was able to make a reasonably tidy job of the painting. Heat shrink tube (unshrunk!) connects the radiator to the engine. The radiator also helps to steady the wing on its cabane struts.
