Scratch Transkelion Original Design / Scratch Built

Scratch - Transkelion {Scratch}

Contributed by Glenn Roth

Manufacturer: Scratch
(Contributed - by Glenn Roth - 04/19/09)

Brief:
This is me box o' parts entry. Single stage rocket with small cargo bay and parachute recovery. Ahoy! Blimey! (Parts were sent to me, ya bilge rat, me bucko, shiver me timbers, all but DVD and medicine bottle, matey, which were "bonus parts.)"

(Scratch) Transkelion (Scratch) Transkelion

Construction:
Because I was workin' with miscellaneous pieces, I used 2 BT30s and a medicine bottle as a payload section. Well, matey, blow me down! Bottom was cut off and turned around t' become top t' accept nose cone. Arrr! 4 tube fins, mounted on struts. Well, blow me down! Avast! Balsa and cardboard design with a transducer type engine mount, ya bilge rat, BT-20 motor mount, ya bilge rat, 18 "elastic shock cord," attached t' a screw eye in payload section. Blimey! Unique feature be t' "DVD" center mounted wing.

I'm goin' t' rate this build a 3.5. Cuttin' out t' sections on t' struts, arrr, t' make it look like struts was a little tricky. Well, blow me down! T' mountin' o' t' tube fins t' t' struts and t' fin/strut assembly t' t' main body be a little tricky, too. Avast! Well, blow me down! Blimey! I do recommend a separation o' t' main rocket and fin assembly for ease o' assembly. Avast! Blimey! I also used a hard coat Modge Podge t' protect decals and finish.

(Scratch) Transkelion (Scratch) Transkelion

(Scratch) Transkelion (Scratch) Transkelion

(Scratch) Transkelion (Scratch) Transkelion

(Scratch) Transkelion (Scratch) Transkelion

Finishing:
Made a boat tail t' house motor. Ya scallywag! Ahoy! Cut struts from balsa t' hold tube fins.

Flight:
I'm goin' t' try a Quest A6-4 for first motor.

Flight 1: A6-4 way underpowered. Aye aye! Blimey! Barely got off ground and broke a strut.

Flight 2: After repairin' fin strut, me hearties, I went with a B6-4. Aye aye! Started out nice then got all kinds o' unstable. Crashed and broke 3 fin assemblies.

I will have t' take apart nose t' add some weight, ya bilge rat, repair fin struts, arrr, and check for stability with a swin' test before next flight.

Recovery:
Shock cord be quite heavy, me bucko, matey, 3/8", and attached t' inside o' rocket body. Assembly be straightforward, matey, just a little tedious t' attach t' struts t' fin tubes.

(Scratch) Transkelion

Summary:
PROs: Nice little rocket and a bit o' challenge t' build so nay your typical build. Well, blow me down! Skill level 2-3. Well, blow me down! CONs: Because of the extra joints with t' tube fins and struts, care needs t' be taken and heavy fillets added.

comment Post a Comment