
(Contributed - by Bill Eichelberger
- 12/10/02)
Brief:
My first Estes catalog was a dog-eared, second-hand copy of the 1977 edition.
This was my first hint that model rocketry did not begin and end with the
legendary Estes Scout, and like many others, I spent a good deal of time
thereafter paging through it, plotting, planning, memorizing and most of all,
wishing. While the usual suspects (i.e. Orbital Transport, Mars Lander,
Interceptor and the big scale birds,) always caught my eye, deep down I knew
that I stood a much better chance of actually owning and flying the smaller
kits. The Estes Wolverine, with it's unique ram-jet style nose cone and cool
pseudo-Russian graphics, was always high on my list of "gotta-haves".
Unfortunately it wasn't readily available in my area, and with mail order but a
far off dream, I never managed to build one, (or even see one for that matter.)
Many years later (after a hideously unsuccessful attempt to turn my own using a
drill and a chunk of balsa,) a chance inquiry to BMS about the availability of
this special nose cone would change all of that.
Construction:
The parts that are needed are:
- BT-50 (7.75")
- BNC-50BC (from BMS)
- 13mm engine mount kit
- 3/32"basswood fin stock
- cockpit pattern
- 12" parachute
- 18" sewing elastic shock cord
- 1
- 1 screw eye
- launch lug
- decal sheet
- 2 - 3/4" wood screws
One thing that I hadn't been prepared for when I started this project was
the Wolverine's small size. (Despite the fact that it is a
"mini-brute".) This would not have been a big deal on it's own, but
it would make a difference when it came time to finish the rocket. Construction
was easy and considering the excellent instructions, probably would have been
so even for a beginner. There should be nothing about this project that would
trip up even a marginally experienced builder, and in the end you are rewarded
with a great looking, compact rocket that is about as far as you can get from a
standard rocket (and can be flown on a small field as a bonus.)
As I mentioned earlier, BMS now makes the cone for this classic. The BMS
version of the BNC-50BC is a two-piece cone and gluing on the tip is probably
the most challenging part of this project. (Not really, but the truly anal
modeler really sweats the small stuff and I was somewhat panicked about the
possibility of gluing the tip off center. I didn't.) The balsa cleans up
nicely, and despite the fact that I've never seen an original, I can't imagine
that one would be able to tell the difference between the two.
Finishing:
Because of it's relatively small size and single color paint scheme, I expected
that finishing the Wolverine would be about as straightforward a project as one
could ask for. Not so in my case.
Since I had used basswood for the fins, finishing looked like it was going
to be a breeze. Following a coat of thinned Elmer's Fill n Finish (and the
sanding thereof,) and a couple of coats of primer (ditto sanding,) I sprayed on
the initial coat of Krylon Metallic Silver. The metallic paints coat evenly and
quite well, but when dry they tend to accentuate any inconsistencies in the
rocket's surface, (at least in my experience.) The body and fins looked fine,
but the area immediately surrounding the fins looked particularly sloppy, bad
enough that even a full set of decals weren't going to distract even casual
onlookers from the sub-standard sanding job. At this point I decided to take a
mulligan and do a combination re-sand of the areas around the fins and a color
sand of the first coat. This made for a marked improvement. A set of inkjet
decals completed the "catalog perfect" look.
Construction Rating:
5
out of 5
Flight:
This was one area where I was surprised to find that improvement was needed,
although I suspect that the fault lies with the builder, not the design. I
first launched the Wolverine at a QUARK section launch in the spring of 2002.
For the first flight I deliberately chose an engine that was on the
conservative side, a 1/2A3-2T, hoping to get a better idea of the rocket's
flight characteristics. Unfortunately the most notable flight characteristic
turned out to be a habit of wobbling as it left the pad. Ejection occurred at
apogee and overall it was a good flight, but the wiggle had me worried.
"More power," I mistakenly thought, and plugged in the
"mighty" A10-3T for the second flight. This made the wiggle disappear
entirely, but the wobbling, end over end flight pattern that replaced it wasn't
the fix I had been hoping for. This made me rethink the problem and I figured
that substituting basswood for balsa had probably messed up the rocket's
surprisingly delicate balance. Several of my fellow QUARKer's also came up with
this theory, so I felt like I was moving in the right direction. The third
flight came after I had added some nose weight in the form of two good sized
screws into the bottom of the nose cone next to the screw eye. The resulting
flight was perfect, arrow straight with a textbook recovery, not much in the
area of altitude, but being a mini-brute, the Wolverine wasn't meant to be a
high flier anyway. (But an UPSCALE might be! Where'd I put my crayons?)
Flight Rating:
5
out of 5
Summary:
Despite the trouble I had with this project, I gave the Wolverine five points
across the board because the problems I encountered were of my own making, not
inherent in the design.
PRO's: Overall unique design, seldom seen at launches, BMS makes the cone.
CON's: JimZ's decal scan needs work and the cockpit pattern isn't included
with the plans.
Overall Rating:
5
out of 5