Manufacturer: | Scratch |
Brief:
Basically, this is G125 motor with fins and a nosecone. Would your RSO let it
fly?
Construction:
I guess I'll fess-up now - this was not my idea, nor is it a live' G125.
A year or so ago I ran across a picture of a rocket, whose body was a spent
motor casing. Being a wise-#@!, I thought it would be fun to build one to get a
rise out of my RSO/LCOs. Using my Dremel with various cutting wheels and
grinders, I managed to ream out the casing from a spent G125 motor. I cut some
G10 fins and some brass lugs, and attached them with epoxy. I made fillets out
of epoxy clay. A piece of 24mm tubing fit nicely inside and I added some
Kevlar®
twine for a shock cord. When I went to search for a nose cone, I found that I
didn't have any junk nose cones that were suitable. I was going to have to add
a lot of nose weight to offset the heavy casing, fins, and fillets. I had
recently bought a PML resin cone, but the shoulder was obviously the same
diameter as the OD of the motor tube. Since I didn't want to sacrifice this
fairly expensive cone by grinding the shoulder down, I cut a 1 ½"
piece of 29mm tubing to adapt' the cone to the body tube/casing. I
attached it to the cone with a tiny screw, forming a reverse shoulder that
overlaps the body tube rather than fitting inside.
To complete the effect, I removed the nozzle from another spent casing. It sits in the end of the rocket and, along with a protruding Copperhead, completes the effect of a motor with fins glued on. I also added some red/white checkerboard tape to the small piece of 29mm tubing. The rest is unfinished.
Flight:
I first took this rocket to a NAR launch. I was sure to get some raised
eyebrows there, since the G125 isn't even a legit motor at that site. Well, I
neither got the desired effect or did I launch it (I can't remember why). At
the next high-power launch, I again pulled it out. There, people see odder
things and didn't have much reaction. Oh well. I guess a gag is all in the
presentation?
I used a small plastic chute (8"?) and some Estes wadding. The boost on a D12-5 was a little wobbly, but not too bad. The chute was under sized and the cone embedded itself in the relatively soft dirt.
So far, I have not been able to convince myself to expend an E15 or E30 on this little rocket. It will probably just sit in my fleet until I re-use the nose cone.
Summary:
This was a novelty rocket built mostly from scrap materials. The nose cone is
really nice, and can be re-used in another rocket. I hope someone finds this
article amusing and still think it would be fun to trick a RSO
maybe next
April Fools Day?
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