ENGINES...
I decided to make 1mm card formers as there was no rigidity in the engine units. This would also make it easier to keep their shapes when gluing the various stages. Also, there was no inner cladding to cover the insides of the engine intakes and exhausts so I added these also.
The only difference that I found between the two engines was that one of them had a small piece out of the front cowl. For simplicity, I decided to make both engines the same. Therefore they can be constructed together as the parts are identical for each engine.
I was not happy with the original single piece front assembly part (E2) as I felt that with the three bands joined, this complicated the gluing of the bands to each other causing a “bump” where there were no tabs. I also found that sometimes the parts did not line up properly.
I therefore decided to split this part into 3 separate bands which made assembly easier and the parts fitted perfectly every time.
I “domed” part E1a with a tool made from a skewer and wooden ball from a craft shop.
For applying pva with a toothpick or paintbrush, I use an old margarine lid on which I put a dab of pva. Any residue left over will peel off after drying.
Assemble E1b with joiner J1 and assemble parts E1d.
Glue E1a to E1b (matching the colour pattern) and then attach E1b to E1c.
When dry, glue this sub-assembly to former E1 and then attach 2 x parts E1d.
Assemble E2a with joiner J2, E2b with joiner J3 and E2c with joiner J4.
Glue assembly E1 inside E2a midway between the front and the rear (the rear has square tabs).
Bend the triangular tabs of E2a inwards at 45°. Coat the inner edge of E2b with pva and slide it over the tabs of E2a and gently work it so that it fits neatly all around E2a without any tabs showing. Now gently crimp the tabs with flat nosed tweezers.
Now glue the inner liner strip E2d in place as shown.
Now repeat this process with E2c.
Coil up the inner liner E2e and insert it into the cowl. Glue the top corner in place as shown. When dry, run a bead of glue along the inside of the top edge of E2c and fit the rest of the liner in place.
Join rings E3a with joiner J5, E3b with joiner J6 and E4a with joiner J7.
Attach E3a to ring E3b.
Flatten out the square tabs on E2a and then carefully run a bead of pva along these tabs as shown.
Now slide ring E3b over the cowl assembly and fit onto the square tabs in the same manner as the cowl rings were assembled.
Make sure that the parts E1d on the front of the intake fan are in line with the red dot on ring E3b which will be the bottom of the engine.
Crimp as before then run a band of pva along the inside of the square tabs to seal them.
Test fit former E3c, sanding a chamfer around the edge so that it is a sliding fit in ring E3b.
Draw a line about 5mm inside E3b, run a bead of glue along it and push former E3c into place.
