©2011 MadCow Rocketry™
FRENZY Assembly
Flying Your Model
IMPORTANT: always use positive motor reten-
tion to secure the motor. Failure to use motor
retention will cause the motor to be ejected in-
stead of the parachute making for a dangerous
ballistic reentry.
IMPORTANT: always remember to check your
balance point and ensure your CG is forward of
the specified CG point.
IMPORTANT: Always follow the NAR safety
code and remember that rockets are not toys
and can be dangerous if not prepared and used
properly. If you are a beginner, it is a good idea
to fly with a club or other group of experienced
rocketeers until you have gained some experi-
ence.
IMPORTANT: In no event shall Madcow Rocket-
ry be liable for any direct, indirect, punitive, in-
cidental, special consequential damages what-
soever arising out of or connected with the use
or misuse of it’s products. The buyer assumes
all risk and liability resulting from ANY use of
any and all products sold by Madcow Rocketry.
Your purchase and use of any Madcow Rock-
etry product constitutes your agreement to and
acceptance of these terms. If you do not agree
to these terms and conditions, you must return
the unused product in resalable condition for a
refund or credit.
IMPORTANT: Please contact us via phone or
email if you have any questions about con-
structing or flying your model.
24338 El Toro Rd #E-134
Laguna Woods, CA 92637
949.547.8847
www.madcowrocketry.com
©2011 MadCow Rocketry™
Balancing Your Model
Step 22 - Pack the chute and assemble the rocket. When
packing your chute, wrap the chute protector around the chute
with the opening in the chute protector facing forward. Always
make sure your chute is well protected as the hot ejection mo-
tor gasses will melt the nylon chute.
Step 23 - Insert the largest motor that you intend to fly (or
simulate the weight with an appropriate substitute) and ensure
that the CG (where the rocket balances front to back) is at or
in front of the point defined in the specifications on the first
page. The CG should be measured from the tip of the nose
cone.
Step 24 - If the CG is behind the specified point, add weight
inside the nose cone by pouring lead shot into the nose
cone and adding some epoxy. Hold the nose cone with the
tip down so the weight will be as far forward as possible.
IMPORTANT: Screw in several screws through the plastic
nose cone into the lead to hold it in place. Grind or cut
off the screw head before filling and applying the nose
cone finish. The epoxy will not stick to the inside of the
nose cone and if you do not anchor with screws, the
liftoff force will cause the weight to become dislodged
causing an unstable model.
When you are satisfied with the
balance of your model, attach the nose cone to the payload
section.
IMPORTANT: Proper CG is critical to the stability of
this model. This model will require some ballast in
the nose - the amount will depend on how you build
and the size motor you use to fly. Do not fly without
balancing this model properly as a dangerous un-
stable flight will result.
Step 29 - Your model is now ready to paint.
At this point your model is ready to fly.
Now go have some fun!
Step 27 - Drill a small 1/8” hold in the chute compartment to
allow venting. Make sure you do this without the chute in the
chute compartment.
Step 28 - At this point install your positive motor retention
device. The kit does not include a motor retention device and
this will need to be purchased separately.
Final Assembly
Step 25 - Using the same knot you used in step 6, attach the
other end of the shock cord to the payload section eyebolt.
Step 26 - Attach the parachute to the shock cord near the
nose cone. Also attach the chute protector to the shock cord
near the nose cone.
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