Materials

2 each 18" BT-60

1 each 18" BT-56

Transition BT-60 to BT-56

NC-56 Nose Cone

24mm Motor Mount Kit 

5' length of elastic shock cord

18" Parachute

NC-60 Nose Cone ( if desired)

3" length of Nylon Twine

Small D-Ring

2 each Launch Lugs 3/8 to 1/4

Assembly Instructions

1. Cut one of the BT-60 tubes into 6 equal lengths (approximately 3" each)
2. Glue the 6 sections to base of other BT-60 
3. Make and insert 24mm Motor Mount Kit
4. Tie knot in each end of the 3" length of Nylon Twine
5. Tape twine about 2" into the BT-60 airframe in U shape
6. Epoxy the twine to the BT-60 and the Launch lug 2" down from top of BT-60
7. Tie shock cord to transition section and feed through bottom of transition
8. Epoxy the Transition to the BT-56
9. Epoxy the NC-56 Nose Cone to the BT-56
10. Tie shock cord to small D-ring 
11. Connect D-ring to Nylon Twine Loop
12. Prepare for flight

Add weight to NC-60 for stability if needed.

Flight Report

Intended for D12-5, D12-7, E15-7, E-30-7 motors. At full length (36") a D12-7 deployed the chute after apogee. With only the NC-60 in place on D12-7 the altitude was noticeably higher. I used streamers for this configuration which worked fine.