Cozy Experimental Aircraft Update – October 28, 2017
Trial fit of triangular seat brace into position. Seatback filed in area of fuel valve bracket to allow triangular brace to lay flush with seatback.
Trial fitting heat duct in position. Sanded the opening in the seatback until a good fit was achieved.
Cut out a section of UND cloth into an isosceles trapezoid shape with a base of 24″, a height of 15″, and a top of 5″. Used a marker to identify the trapezoid and 2″ width segments. Placed wax paper under the cloth.
Workshop temperature was 25 deg C and the humidity was 57%.
58g resin and 22g hardner were mixed and epoxy applied to the UND cloth.
The hot air duct has a 7-ply UND reinforcement over the safety belt mounting hard point with ends tapered. The 7 lengths were cutout using electric scissors and layed over top of each other into one long 24″ strip with tapered ends.
Micro was added to the epoxy and applied to the foam on the top side of the heat duct where the UND layup goes. The layup was applied to the heat duct covering the aluminum tube. Wax paper was placed over the centre of the layup and weights added to each side of the aluminum tube while the layup is curing.