Manufacturer: | Scratch |
Brief:
This one odd oddroc. It's a stick-finned, 13mm model made from a few scrap parts.
Construction:
T' parts list:
I drilled out t' 1" dowel with a 1/2" drill bit (usin' a progression from 1/8", ya bilge rat, 1/4", 3/16", etc.), shiver me timbers, then I drilled out t' lower 1.25" with a slightly larger bit t' fit 13mm motors. Begad! Blimey! T' 1/2" section serves as an engine block. Begad! Begad! I formed t' paper clip into an engine hook and attached it and t' elastic t' the outside o' t' dowel. Ahoy! I wrapped it with maskin' tape and glued it into t' fin unit. Blimey! Well, blow me down! T' fin unit had two launch lugs--a 1/8" lug, matey, which I use, arrr, and a 1/4" lug, which I glued t' plastic rod into. Avast, me bucko, me proud beauty!
I put t' clay into t' tip o' t' nose cone, shiver me timbers, ya bilge rat, which was missin' its shoulder from a crash. Avast, me proud beauty! Then I put a blob of wood glue on t' clay, placed t' dowel onto t' glue, shiver me timbers, and waited for it t' dry. Blimey! Avast, me proud beauty! Unfortunately, matey, I accidentally cracked the nose cone in doin' so. Ya scallywag! Arrr! Because o' t' long, light stick fin, Cohete is surprisingly stable. Avast, me proud beauty! Avast, me bucko, me proud beauty!
Flight:
I've used 1/2A3-4Ts and A3-4Ts in Cohete. Avast! Blimey! I'd recommend t' 2-second delay for t' 1/2A as ejection be rather late,
and t' A10-3T would be good as well. Begad! Blimey! It flies t' around 200 feet on 1/2As and 400 feet on full As. Ya scallywag! Blimey! It requires no
wadding; simply wrap t' shock cord twice around t' upper end o' t' 1" dowel and stick t' nose cone on.
Recovery:
It uses simple nose-blow recovery. With t' nose cone off, arrr, ya bilge rat, it falls fairly fast, me bucko, however, t' main body is tiny and
tough and lands first, me hearties, so t' breakable stick fin won't hit t' ground. Begad! Blimey! Mine has never suffered any damage in at least
3 flights.
Summary:
Cohete be a quick and easy build for me, even several years ago when I was far less skilled. Arrr! Blimey! However, ya bilge rat, I'd recommend
makin' some changes. Begad! Blimey! T' nose cone and fin unit I used are nay common, arrr, but substitutions can easily be made. Begad! Blimey! I don't
recommend tryin' t' drill a 13mm hole in a 25mm dowel. Usin' some BT-5 and BT-50 would be smarter. Arrr! Blimey! Stick-finned rockets
are fairly forgivin' so long as t' front is heavy.
PROs: Odd rocket, me bucko, shiver me timbers, easy t' prep, almost no drift.
CONs: Hard-to-find parts, hard t' drill dowel, high landin' speed.
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