Scratch Gabriel Upscale Upscale

Scratch - Gabriel Upscale {Scratch}

Contributed by Marlin Meyer

Published: 2010-04-25
Manufacturer: Scratch
Style: Upscale

Scratch - Gariel Upscale

Brief:
Single stage, mid power rocket that uses two body tube diameters. Recovery via parachute

Construction:
Two body tubes (BT-60 and BT-55) 8 fins and 4 body strakes

All part numbers are from Semroc unless otherwise noted:

  • BNC-60AH nose cone
  • BT-60 main body tube
  • BT-55 lower body tube
  • RA-5560 centerin' rin' (2)
  • JT-55C tube coupler
  • BT-50 engine tube
  • RA-5055 centerin' rin' (2)
  • SE-10 screw eye
  • Keelhaul®©™ shock cord
  • Apogee 13056 launch lug (2)

Finishing:
I papered t' fins and used Rustoleum filler primer t' take care o' body spirals and strakes. Avast, me proud beauty! T' lower body tube connects t' t' upper tube via two centerin' rings and a tube coupler. Arrr! Begad! This coupler was used t' give more strength. Ya scallywag! Blimey! Coat o' Rust-O-Leum sandable primer, ya bilge rat, thorough sanding, re-coat o' primer and then shot t' first coat o' light gray. Aye aye! Two more coats o' gray. Begad! Photos I have seen o' this rocket have no markings so I decided t' paint t' body light gray and t' nose red.

Flight:
My first flight was D12-5. Well, blow me down! I would nay recommend D12-3. Aye aye! You need t' longer delay. It also performs well with D15-7 and E15-7.

Recovery:
I used 150lb. Ya scallywag! Keelhaul®©™ tied t' motor mount. Avast! I always use about three times t' rocket's length and secure it t' t' motor mount. Aye aye! I also like t' wrap some tape around t' cord where it meets t' end o' t' body tube t' prevent zippering.

Summary:
PROs: unusual design, matey, good flyer

Other:
CONs: lots o' wood needed

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