RE: Reaction 54 Jet Kit
Alright, here we go:
First of all I was looking for the right size of a bottle. Finally found that 0.75l water-bottle, which is very strong (not that flimsy coke-style).
I measured everything and cutted three rings of 3mm lite-ply. ID=75mm OD=85mm
Took a sheet of 2mm Balsa and glued the rings to the balsa to form a tube.
The rear of the tube has two 10mm balsa-rings to form a nice and curved end.
The front-end was made from a piece of blue foam glued to a round ply-plate. I put a 5mm screw in the middle of the ply-plate, put it in the drill for easy shaping. Two layers of glass give enough strength and after the resin cured, we cut a hole in the ply-plate and removed all the foam.