
(Contributed - by Steve Terrell - 10/15/00)
Brief:
The HyperX is an "Ready to Fly" (RTF) that has a nose cone that comes
down as a helicopter. The body tube uses a 'chute for recovery.
Construction:
The HyperX, on the outside, is a basic 4FNC rocket. Pulling the nose cone out
reveals three blades attached to the nose cone. Each blade is about 4 inches
long. The motor mount uses a retainer ring instead of the usual Estes motor
retainer clip. Due to the length of the blades, the shock cord is mounted WAY
down the body tube.
Since this is an RTF, there is very little construction. Even the chute was
preassembled and attached to the shock cord. The only assembly required was to
attach rubber bands to the nose cone blades. The rubber bands provide the
tension necessary to unfurl the blades after the nose cone has been ejected
from the body tube. The fin unit/motor mount is molded plastic. While it is no
fun for modeling purposes, the plastic is very durable and can withstand hard
impacts. The same applies to the plastic nose cone. The "launch lug"
is a molded piece of plastic, with two rings to guide the launch rod. One major
drawback to the construction is the very slender shock cord mount (probably
1/8"). Like I said, the shock cord is mounted very deep into the body tube
to give the nose cone fins some room. This places it closer to the engine's
ejection gases. No doubt this shock cord is going to be burned off soon.
Remounting the shock cord at the same depth might be tricky.
Finishing:
No finishing necessary.
Construction Rating:
3
out of 5
Flight:
Recommended motors are the B4-2, B6-2/4, and the C6-3. I used the fins on the
nose cone to pack the recovery wadding as far as possible into the body tube.
The parachute and shock cord were then put into the tube. The nose cone blades
were collapsed, and the nose cone slid easily into place. The motor retainer
ring twisted off easily, the motor was inserted, and the retainer ring twisted
securely on. The first flight was on a B6-2. Shortly after leaving the launch
pad, the rocket took off on a 45 degree angle. It probably didn't get more than
100' off of the ground. The ejection charge kicked in, and the nose separated.
The nose dropped like a rock for about 15 feet before the blades kicked in. The
nose cone's descent rate was pretty slow, and on a windy day it will definitely
drift quite a bit. The body tube came down rather quickly on a 12" chute.
The second and third flights were better, also on B6-2s, but not straight up.
The HyperX flies each time like it is weathercocking, except that it does not
necessary point into the wind. Each time the nose cone drifted a lot. This is
definitely not a rocket to fly on a windy day. It's also a fairly heavy rocket,
so the flights are not that high. Launch it on a C if you have the room to
recover the nose cone unit. Still, the helicopter recovery makes this a fun
rocket to fly. It is one of my son's favorite rockets to watch.
Recovery:
Like I said, the nose does drift quite a bit. But after several flights, the
only noticeable wear is the typical scorch marks on the shock cord.
Flight Rating:
3
½ out of 5
Summary:
The HyperX is not a great flying rocket, but it is a lot of fun, especially for
kids. It seems to be a very sturdy rocket. The only things that might wear out
are the shock cord, and the rubber bands on the nose cone. The biggest con is
that is is an RTF! This would have made a great kit.
Overall Rating:
3
½ out of 5