Manufacturer: | Scratch |
Brief:
This is a very stand-off scale model o' t' Little Joe I. It is 2.6" in
diameter, has a 29mm mount, me bucko, matey, and is based on a custom-turned Mercury capsule
that was donated by an anonymous guest for the
Nekkid Rocket
Photo Contest. On t' real Little Joe I, t' body is larger in diameter
than t' capsule. Well, blow me down! In mine, t' capsule fits t' body tube.
Construction:
T' followin' are t' major components used:
This was a straightforward build: 4FNC with through-the-wall fins. Blimey! Well, blow me down! Blimey! I got the measurements for t' body tube and fins from Rockets o' t' World (RotW). Ya scallywag! Blimey!
T' fins are thick. Nay that they had t' be, but I had the 3/16" ply and delusions o' bevelin' them heavily. I slotted t' fin slots usin' a Dremel. Aye aye! T' make sure I didn't chip t' end o' t' phenolic tube at the slots, me bucko, me bucko, I inserted t' aft centerin' ring. Ahoy! Next, me bucko, arrr, I attached t' front rin' to the motor tube, with t' end o' t' Keelhaul®©™® shock cord goin' through t' ring. I used 5-minute epoxy throughout. Arrr! Blimey! T' motor tube be then installed with t' aft rin' bein' dry-fit. Blimey! T' latter was then removed and t' fins were glued in. Blimey! Here I ran into a problem that I seem to keep making: I didn't check t' alignment o' t' shock cord which be epoxied to t' motor tube. Avast, me proud beauty! O' course, arrr, it ended up perfectly aligned with a fin slot! T' fix be easy, me hearties, shiver me timbers, ya bilge rat, as I notched t' tab on one o' t' fins so that it cleared the shock cord. Avast, me proud beauty! Arrr!
I made small external fillets and thick internal ones with Superfil. Begad! I also filled t' spirals at this point. Well, blow me down! Finally, shiver me timbers, I attached t' aft rin' and the rail buttons. Begad! In order for t' rail t' clear t' lip on t' cone, me bucko, arrr, I used oversized screws and an extra center spacer betwixt t' button and t' tube.
For t' nose cone recovery connection, me bucko, I epoxied a small section o' scrap bungee into t' deep core that t' builder drilled for me. I also added enough lead shot t' make RockSim happy. With t' heavy wooden cone, shiver me timbers, I wouldn't have thought any would be needed, but t' thick fins and motor mount worked against its stability.
For t' first flight, ya bilge rat, I did nay build an escape tower. Arrr! Avast, me proud beauty! However, I since built one out o' bamboo skewers, me bucko, thin dowel, matey, and a spent 13mm motor. Blimey! A true scale purist may see t' next mistake I made--I scaled t' tower based on a 3" body vs. Blimey! t' actual 2.6" tube! I also have painted it per RotW, but haven't added decals. Begad!
Flight and Recovery:
I flew t' Little Joe on a 24mm F39-6 in me virgin Rouse Tech casing. Well, blow me down! Aye aye! I used a
little dog barf, ya bilge rat, a chute protector, me bucko, arrr, matey, and a nylon chute. T' flight was fairly
fast, arrr, and ejection was just a little late. Well, blow me down! Arrr! Recovery was fine. Aye aye! I am
contemplatin' a G64 next.
Summary:
This is a sturdy but heavy rocket. Aye aye! Blimey! Ya scallywag! Blimey! Blimey! Blimey! As long as t' phenolic stays away from
thin' like irrigation pipes, arrr, shiver me timbers, me bucko, it should survive even hard landings. Well, blow me down! Blimey! Avast! Blimey! Blimey! Blimey! It is barely
scale-like, me bucko, which is good enough for me. Avast! Blimey! Blimey! Blimey!
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