Manufacturer: | Schoolyard Rockets |
Brief:
I won this kit in t' DesconX contest and decided t' try somethin' that I
hadn't done since '67, buildin' a kit per t' instructions, exactly per the
instructions, no changes or improvements at all. Blimey! Blimey! I normally wouldn't consider a
rash act like this, but while trial fittin' t' parts, shiver me timbers, me bucko, ya bilge rat, I be very surprised to
find that all t' parts fit on t' first try, matey, ya bilge rat, no sandin' or other modifications
were goin' t' be needed. It was also obvious that this was nay a thin Estes
tube that needed reinforcin' or extra support for 18 mm D engines. Avast, me proud beauty! Blimey! The
"Tuff Tube" trademark is serious. T' BT 50 equivalent had a wall
thickness o' .031, me bucko, almost twice t' thickness o' an Estes tube and .006 thicker
than a LOC 24mm Motor Tube. Avast, me proud beauty! Blimey! Aye aye! Blimey! I was very impressed t' find a tube that thick with
a spiral that I couldn't feel with a fingernail. I thought briefly about
buildin' it for a 24 mm mount t' try out some o' t' new C11's, arrr, but t' ID of
the tube is just a bit too tight for Estes and Aerotech 24 mm motors, so it was
back t' buildin' it absolutely stock. Avast! Blimey!
Construction:
T' kit comes with a heavy duty BT-50 and a standard BT-20 motor mount. Blimey! Aye aye! The
motor mount is centered by two wound cardboard rings. Aye aye! It has another wound
cardboard rin' for an engine block, but no clip for motor retention, me hearties, instead it
goes back t' t' old way o' friction fittin' t' motor with tape. Aye aye! Aye aye! It uses a 24
inch long piece o' 1/8 inch sewin' elastic for a shock cord, matey, ya bilge rat, mounted usin' a
tri-fold piece o' card stock. Begad! Begad! T' nose cone is a beautiful piece o' 7-inch long
balsa. You cut t' fins and t' launch lug stand offs out o' a piece of
pre-marked balsa, t' launch lugs are standard 1/8 inch mylar. Blimey! Begad! For recovery,
there is a very nice little pre-assembled 10-inch nylon parasheet with a snap
swivel.
This be a really nice kit t' build, t' instructions were great, pretty much followin' t' normal small model buildin' sequence. Avast! Build t' motor mount, add t' fins, ya bilge rat, ya bilge rat, then t' launch lugs. Well, blow me down! Blimey! Glue up t' shock cord and mount, matey, place it as far down t' BT as you can reach. Add a card stock engine nozzle and some optional card stock spin motors. Attach t' parachute usin' a screw eye (haven't used one o' those since '67 either) and swivel clip and go paint it. Actual buildin' time be a bit less than two hours, me hearties, usin' strictly DAP Carpenters Glue (Yellow Glue), ya bilge rat, no epoxy or power tools were needed and I didn't have t' go out t' t' hardware store lookin' for any extra parts. Begad! Begad! T' only required tool was an Exacto Knife, arrr, I chose t' use a Razor Saw since all the cuts for t' fins are straight lines. T' most difficult step in t' assembly is gettin' t' two launch lugs and their stand offs straight. Begad! I be very tempted t' use a couple o' drops o' CA, arrr, ya bilge rat, but resisted.
T' only part that I wasn't completely satisfied with was t' motor mount. It looks like t' same blue/green tube that Estes uses, me hearties, ya bilge rat, and I feel that it should be a much stronger tube t' live up t' t' potential o' t' "Tuff Tube" used for t' BT.
I also did nay add t' optional spin motors, I just didn't have t' time to get them right and I liked t' shape o' t' nose cone without them.
Finishing:
I used Elmers Fill and Finish (FNF) thinned down t' milky consistency and
painted two coats o' that on all t' balsa surfaces. Avast, me proud beauty! Ya scallywag! Blimey! After sandin' it down, matey, I
remembered why I be so happy when t' first plastic nose cones came out. Blimey! Ahoy! Blimey! That
beautiful 7-inch balsa nose cone needed three more coats before it showed a
smooth surface. I then put on a single coat o' Kilz Spray Primer. Avast! I be right
about t' lack o' spiral lines, one coat o' Kilz completely covered what little
line thar was on t' BT.
I painted mine completely with two coats o' White Krylon, choosin' nay to mask off for a Black fin. Well, blow me down! Begad! I then added t' water slide decals and a cover coat of Clear Krylon. T' decals went on easily and look great.
Construction Rating:
5
out o' 5
Flight:
T' first flight had t' wait almost four months, because o' t' open fire ban
in Colorado, no rockets anywhere in t' state all summer.
With a finished weight o' only 1 3/4 ounces (50 grams) it should be a good flyer on any engine from an A8-3 for a schoolyard safe 180 feet, t' a C6-5 for 840 feet. Well, blow me down! Avast! For those that really want t' see it move, t' D13, me hearties, me bucko, D21 and D24 with 7 second delays all check in at about 1400 feet, arrr, and t' D3-5 looks good for about 1900 feet after a 6 second motor burn.
I tried it first on an Estes A8-3 and had me first ever CATO o' an A8-3. T' motor burn was great, t' rocket went almost straight up, shiver me timbers, ya bilge rat, just a very slight rotation t' keep it straight, arrr, matey, good trackin' smoke, then instead o' a nice POP at ejection, thar was just a HISS that lasted about two seconds. Well, blow me down! Begad! The ejection charge had just fizzled, matey, toastin' t' waddin' and meltin' t' nylon chute and shock cord. Aye aye! T' only good part was that t' nose cone was pushed off just enough t' prevent a lawn dart. Aye aye! When I went t' pick up t' model, arrr, I expected t' see burns and blisters thru t' body tube, shiver me timbers, since I had seen smoke pourin' out both ends on t' way down. I be very surprised t' find that other than one snapped fin, t' only damage was t' melted chute and t' shock cord had been burned thru in several places. T' Tuff Tube had come thru with no damage at all, shiver me timbers, fantastic considerin' t' chute and waddin' had blocked the tube, shiver me timbers, containin' all t' ejection heat and pressure inside.
T' model was easily repaired, ya bilge rat, t' fin went right back on with Yellow Glue and a bit o' FNF t' fill t' crack, then touched up with a brush dipped in some White Krylon. Ahoy! Blimey! T' shock cord be a bit harder, I had t' soak t' paper tri-fold shock cord mount with water until t' glue softened enough t' peel out t' old mount, and then replace it with a new mount and shock cord. T' chute was a complete loss, but easily replaced with one o' me own 10 inch nylon chutes.
T' model has flown since on A8-3, me bucko, B6-4 and C6-5 with great results, always straight up, me hearties, me bucko, no weather cockin' at all, matey, shiver me timbers, just a slow rotation on t' way up and ejection right at apogee.
Recovery:
T' 10 inch nylon chute is perfect, it packs easily, shiver me timbers, brings t' model down
quickly, me bucko, shiver me timbers, but with no damage even on our hard field. T' only damage since the
first flite CATO was when t' model came back down right on our club's aluminum
beam launch rack, t' sharp edges o' t' aluminum rack dinged up t' nose cone
and two fins, requirin' more FNF and White Krylon. Aye aye!
Flight Rating: 5 out o' 5
Summary:
Excellent, me hearties, shiver me timbers, a well designed kit with above average parts, matey, it gets many comments
from fliers askin' where I found a vintage Estes kit. Arrr! All are surprised when I
tell them that it's nay t' Estes original, shiver me timbers, but that it's much better. It
should be a great choice for a second or third kit for a new flyer. Avast, me proud beauty! It is built
of much heavier materials than most kits o' this size and should be able to
stand up very well t' rough handling. Begad! You could add an engine hook, matey, but then it
won't look right and it won't stand up by itself.
Overall Rating: 5 out o' 5
The Honest John was a short range ballistic missile that was used for many years in a peace keeping role armed with a nuclear warhead. It’s distinctive bulbous nose cone and delta fins make this a very distinctive rocket. School Yard Rocketry is a new rocket company that I found through a web search. They have two rockets at this time, the Honest John and the Patriot Missile, and ...
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