
(Contributed - by Bill Eichelberger
-
06/23/06)
Brief:
For the most part, I'm not much of a scale fan but through the years there have
been several scale rockets that I always had an itch to build. The original
Estes Mercury Redstone was always a favorite, as were both versions of the
Little Joe. Another member of this club was the Bomarc. Bomarc kits are seldom
seen since Estes discontinued their version
Construction:
When I saw the Empire Rockets kit on an ROL auction in the fall of 2003, I
placed a bid and, much to my surprise, I won the auction. That should have been
the start of a beautiful "man meets rocket" story. It wasn't.
When the kit arrived after a delay of several weeks to correct a problem
with the ramjet cones, I found that there was a problem with the ramjet cones.
I emailed Empire about the problem and was promised a replacement set, but no
set ever arrived. Just that quickly my ardor for the project evaporated like a
steam cloud. After that, whenever I noticed a post on The Rocketry Forum (TRF)
asking about Empire Rockets, I told my story just to keep anyone else from
winding up with an incomplete kit like I did. Apparently the Empire folks keep
an eye on TRF, because in February, 2006, a whole new Bomarc kit showed up on
my doorstep without explanation.
The parts list:
- 1 BT-55 main body tube, 17" long
- 2 BT-50 ramjet tubes, 6" long
- Balsa nose cone
- 18mm motor mount
- 1/8" balsa fin stock
- 1/4" balsa dorsal conduit
- 2 1/4" balsa ramjet pylons
- 2 balsa ramjet cones
- 2 round toothpicks
- clay nose weight
- 17" parachute
- snap swivel
- barrel swivel
- Kevlar®
shock cord
- 36" elastic shock cord
The second Bomarc kit arrived in a plastic bag with no header card or hang
tag. All of the parts were in good shape and the ramjet cones fit like I always
hoped my first set would. I found the instructions to be decently written
albeit somewhat complicated. (Although I should add that since this was marked
as a skill level 4 kit, I didn't think they were excessively complicated.)
Construction wasn't difficult and there was nothing that I'd have
considered as a "gotcha". Making sure things square up isn't
difficult, and taking the time to do this makes a definite difference in the
finished model. I have to admit, I was more than a little impressed with the
model that resulted from my efforts.


Finishing:
I flew the Bomarc unfinished due to time constraints. I had taken the time to
fill, seal, and sand all the balsa and tubes so it was ready for paint. It
would have looked great as a desk model once it was painted and applied the
decals. If only I'd have kept it on a desk. From a cosmetic standpoint, all I'd
suggest for this kit is a better set of pictures for painting. I'd also suggest
that Empire should include decals.
Construction Rating:
4
½ out of 5
Flight:
Empire recommended a B6-4 for the first flight, but I went with the C6-5 due to
the weight of the model. The model balanced near the front of the ram tubes
which seemed within reason. Winds were topping out about 6 to 8 mph, but were
more consistently around 3 to 5 mph. This also seemed within reason.
The rocket looked fine on the way up until around the 50' mark when it
suddenly changed from vertical to horizontal almost as if it was rebounding off
of an unseen glass ceiling. It flew back over the flight line and for a moment
looked like it was going to hit one of the large concrete bases that were left
from the towers that once stood at the VOA. It just missed and disappeared
behind the monolith. I was disappointed and slowly began making my way over to
pick up the pieces.
I found the
rocket sitting near a black patch of grass. It took me a moment to realize that
the grass was black because it was burning. I yelled to the two guys I was
flying with and between the three of us we were able to get the fire out before
the fire department arrived. (If nothing else, I developed a whole new respect
for firefighters--that's tough work.) In the end, the body of the rocket was
spared, but the nose cone, parachute, and shock cord were destroyed. I was
pretty sure my Bomarc days were over.
Several weeks later, it began to gnaw at me. This kit had been sent to
replace an incomplete earlier kit, and I still had the parts from that first
kit down in my shop in a bag. After locating the nose cone, I mated it to the
body of the second kit and set out to find some information about trimming a
Bomarc for flight. Someone who'd had experience with trimming the Bomarc
suggested that I trim it so that the CG was 1/2 inch in front of the ramjet
cones. I stuffed enough clay into the plastic cone to bring the CG up to that
point. I then waited for a scheduled flight weekend that wasn't either rainy or
windy. Then I waited some more. It took until May for us to get a suitable
weekend, but it was worth the wait. With nothing but a very light breeze I
loaded the Bomarc with the B6-4 that the directions specified for the first
flight.
The flight was markedly better than the previous flight but wobbled throughout
the flight and never looked to go past the 100' mark. Ejection occurred just as
the rockets forward motion stopped. While not perfect, the lack of an actual
crash made me think that with the added noseweight, more power might be the
answer. Instead of leaving well enough alone, I immediately prepped it for
another C6-5 flight. Once again, the C6-5 proved to be the Bomarc's nemesis.
This time the rocket didn't even leave the pad looking like it would go
straight. Instead it swapped ends and landed in the tall grass, fortunately
still damp from rain the previous night. It smoked through the coast phase,
then blew the nose cone into the soft earth, officially ending its career as a
flying model.
Recovery:
Recovery was a bit hard to judge as the parachute was only used on one out of
the three flights. One parachute melted in the fire, the other one worked on
the one flight but never got unfurled due to the third flight being on the
ground before the boost phase had ended.
Flight Rating:
2
out of 5
Summary:
After two years and three months, I was really looking forward to flying this
rocket and I was determined to put the customer service experience behind me.
The Bomarc builds great and I have no doubt that it would make a great looking
bird when finished, but based on what I saw, it has no business flying without
modifications or, at the very least, trimming instructions that are as detailed
as the build instructions.
PROs: Decent quality parts. Well thought out assembly instructions.
CONs: Terrible customer service. No trimming instructions.
Overall Rating:
1
½ out of 5