Here is a closer look at the beast which was quickly slapped together without too much care. It is still lacking engines and wheels which are on their way to me. Rotors also need to be added and I plan to use clear acetate disks to represent them. These will be held to the model with rare earth magnets in order to make storage easier and swap them from model to model.
The first thing you will notice is that the hard plastic is rather thin and, as a result, the shell appears to be quite flimsy and somewhat lacking in rigidity. This is no longer an issue if you glue a rectangle of plastic inside the body (slightly over 8 cm by 3 cm) which is necessary anyway if you want to save some money by not ordering the bottom plate.
The center of gravity of the RC toy is obviously quite different from that of the actual machine and, as a result, all four wheels are too far forward and will need to be repositionned where the brass pegs are.
The model was also used as a testbed for colour and weathering and since it didn't turn out too bad, I also tested some homemade decals to depict one of the tired dust buckets which the Royal Canadian Air Force purchased from the US.
The WIP result can be seen here with some Peter Pig pilots and QRF modern British figures for size reference. As you can see, it is still awaiting engines and wheels which were ordered later. I'm not too happy with the way the glass areas are painted but this was also part of the test...
On further builds, I will probably fill in some of the recessed "details" (most of which is imaginary anyway) on the sponsons because they interfere with correct decal placement.
Overall verdict : this is a cheap source for a 15mm Chinook that is in fact quite useable and I have some more on the way to my letter box.
Update : Here are some quick photos of the chopper with engines and wheels which do make it look rather better. These parts haven't been weathered yet so there is a colour difference.
Some close-ups of the internal bracing (since this is invisible when the model is in use, care and precision were dispensed with as you can see) :