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| Manufacturer: | Scratch |
Extra Razor
(Contributed - by Barry Lynch)
(Contributed - by Barry Lynch)
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
- Cut one of the BT-60 tubes into 6 equal lengths (approximately 3" each)
- Glue the 6 sections to base of other BT-60
- Make and insert 24mm Motor Mount Kit
- Tie knot in each end of the 3" length of Nylon Twine
- Tape twine about 2" into the BT-60 airframe in U shape
- Epoxy the twine to the BT-60 and the Launch lug 2" down from top of BT-60
- Tie shock cord to transition section and feed through bottom of transition
- Epoxy the Transition to the BT-56
- Epoxy the NC-56 Nose Cone to the BT-56
- Tie shock cord to small D-ring
- Connect D-ring to Nylon Twine Loop
- 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.
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