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REV 2.4 - Fri Jul 8 22:59:52 2011

Madcow
Mozzie
24338 El Toro Rd #E-134
Laguna Woods, CA 92637
(949) 547-8847
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SPECS: 19.5" x 2.6" - 10.5 oz
ROCKSIM FILE: Right Click to Download
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: E16W-4, F21W-6, E23T-5, F20W-7, F22J-4, F25W-6, F40W-7, F26J-9, G33J-5

Rating
(Contributed - by John Bergsmith - 02/24/09)

Brief:
The Mozzie is an upscale looking Mosquito so it naturally has a classic familiar look. The Madcow kits that I've built in the passed all have contained top quality materials and the Mozzie was no exception.

Madcow Rocketry Mozzie

Construction:
The kit includes the following components:

  • Balsa nose cone, ply bulkhead, eye bolt hardware
  • Pre-slotted body tube for TTW fins
  • Liteply centering rings
  • 29mm motor tube
  • Laser-cut plywood fins
  • Kevlar shock cord section and Nylon upper shock cord section
  • 9"x9" flameproof chute protector
  • 18" nylon chute
  • ¼" launch lugs

The instructions provided with the kit are fairly brief. Madcow gets to the point in this area, but what's provided gets the job done. The included illustrations throughout are helpful. There is really nothing unusual about the construction of the Mozzie. I used epoxy microballoons for reinforcing fillets around the centering rings, fins, and launch lugs. The completed airframe is very sturdy with really no weak areas observed. The Mozzie should hold up well.

Finishing:
The fins and nose cone were sealed and hardened using two coats of Minwax Polyurethane. Once dry they were sanded smooth and coated using thinned spackle that was brushed on to fill the wood grain. The filler was sanded off and the rocket was primed with two coats of Duplicote High Fill primer sanding between coats. I decided to go with the factory red and black color scheme. I used Valspar Premium spray for both colors. This paint gives a very nice shine and has proved to be durable. I'm very satisfied with the completed rocket.

Construction Rating: 5 out of 5

Madcow Rocketry Mozzie

Flight:
For the first flight I attended are normal monthly club fly. Winds for the flight were around 10 to 15mph. For motor selection I chose the Aerotech F40-4W which is a 29mm reload. Madcow recommends a 7 second delay, but with the wind I though 4 seconds might be a better choice. The Mozzie launched almost perfectly straight with a very slight weathercock. Ejection occurred before apogee, so the 7 second delay would be perfect. The 18" parachute seemed to be a perfect match, and the Mozzie was recovered with no damage. Overall it was a quick boost that achieved good altitude.

Recovery:
I can't think of any cons in this area. The Mozzie is well designed in this area and functions perfectly.

Flight Rating: 5 out of 5

Summary:
Simply said, I like it. It has a classic look that is upscaled for midpower, and Madcow provides top quality materials. It's easy to build, but enough works exists to be a project. The Mozzie looks great on the pad and even better climbing under boost.

Madcow produced another high quality, great flying rocket.

Overall Rating: 5 out of 5


Rating
(Contributed - by David Sindel [Who's Who Page] - 06/26/09) Madcow Rocketry Mozzie

Brief:
This is a 5x upscale of the Estes Mosquito suitable for mid-power motors. It is an excellent first mid-power rocket.

Construction:
The parts list:

  • 1 2.6" thick-wall body tube, pre-slotted for fins
  • 1 Balsa nose cone
  • 2 1/8" plywood centering rings
  • 1 29mm motor tube
  • 3 1/8" thick laser-cut plywood fins
  • 1 screw eye, nut, and washer set
  • 1 1/4" plywood nose cone bulkhead
  • 1 Kelvar shock cord section (~3')
  • 1 Nylon shock cord section (~5')
  • 1 18" purple rip-stop nylon parachute
  • 1 9" square flameproof chute protector
  • 2 1" sections of 1/4" launch lug

The instructions were very easy to follow for someone who's already built a few rockets (okay, 40 other rockets). The illustrations were not Estes-grade but clear and functional. I wouldn't recommend this as a first rocket as the instructions assume previous knowledge of building rockets. If you use wood glue as I did, then it's a skill level two rocket. If you use epoxy, then perhaps a three.

Madcow Rocketry Mozzie All the parts were very high quality and fit together nicely with only a bit of sanding (1 min total) to have the fins fit perfectly in the pre-cut slots, and the centering rings fit cleanly. The body and motor tubes are thick-walled. The wood parts are all 1/8" ply, and the shock cord is thick Kevlar and nylon. This is more of a scaled-down HPR rocket than an up-scaled "Questes" kit.

Although the instructions recommend epoxy, I built it just fine with wood glue. The fins have plenty of surface area and are TTW so they hold just fine with wood glue. The instructions recommend epoxy to ensure that the nut will hold onto the screw eye permanently. I didn't have epoxy so I soldered the connection, which was probably overkill. The nut fits tight enough on its own and a single drop of CA would be sufficient. It took perhaps four hours over four days for building, but an experienced builder could be done in an hour with 5-minute epoxy.

The provided motor mount tubing is several inches longer than needed. I recommend cutting it off about a quarter inch above the forward centering ring to leave more room for the chute.

Madcow Rocketry Mozzie No 29/24 adapter is included, but if you wish to use D12s and 24mm E motors, it's easy to make one. I used 4" of 24mm tubing, two 29mm centering rings, and part of the leftover motor mount tubing as a thrust ring.

There's only one gotcha with the whole kit. No nose weight is included, but none is really needed unless you plan to use the larger Gs or even 29mm Hs. If you do use nose weight though, you have to install it (in the helpful space provided in the nose cone) before you attach the nose bulkhead and screw eye.

Finishing:
Finishing is pretty easy for the Mozzie. The only hard part is sealing the nose cone. I did not seal it and it's a bit fuzzy and off-color. If you're building a rocket of this size though, you probably have the skills to seal it.

Painting is pretty simple--all yellow then mask off the one fin and paint it red. (The instructions show a black fin instead of yellow, but I went with the classic mosquito color scheme). You could use a primer if you want, but it's still a very simple--and striking--paint scheme.

There are no decals with it, but it doesn't need any. This huge red rocket is bright enough on its own.

Construction Rating: 5 out of 5

Madcow Rocketry Mozzie

Flight:
Madcow recommends the D12-3 and a selection of 29mm E-G motors. However, 24mm Es and Fs work just fine with an adapter. Don't use the E9, E11J, or F12J though--they don't have enough thrust to get it stable, and the D12 is only for use on calm days.

The body tube is just big enough for a 29/180 casing, so if you're truly crazy you could fly an H in it. If you're considering an H or high-thrust G though, consider glassing the fins as they're big and only 1/8" ply, which is fine for regular use but may flutter at high speeds.

Motor retention is not included, but masking tape seems to work just fine. If you were so inclined, you could use Aero Pack retainers or a threaded rod.

Both my first and second flights were off an Estes Porta-pad using a 3/16" rod. It wasn't pretty, but it worked. Even though this is a big rocket, it can still be flown on pretty small fields.

Madcow Rocketry Mozzie My first flight was on an Estes D12-3. I used my homemade 24mm adapter and masking tape for retention. The 9" chute protector is nice--you don't have to use wadding, which is a big plus in my book. It flew straight and slow to about 280 feet and ejected right at apogee. The 18" nylon chute brought it down perfectly.

My second flight was also on a D12. On this one though, I packed the chute far too tight, and the nose cone popped off but the chute did not. The rocket, weighing 11oz with the motor casing, fell 300 feet onto one fin and bounced. Total damage: one tiny dent in the nose cone. This skeeter is tough!

Third flight was on an E15-4W off a proper MPR rod. It went fast and loud to about 800 feet with ejection near apogee. It drifted about 800 feet and came down unharmed in a neighboring field.

Recovery:
The shock cord is almost 7' long and made of Kevlar and nylon. It shows no sign of damage. It was pretty easy to assemble--just tie the two together, tie the Kevlar around the motor mount Quest-style, and tie the nylon end to the nose cone.

The 18" chute is a good fit for the rocket. It provides a descent rate of about 20 fps and its dark purple color is easily visible against any sky.

The 9" chute protector included is very helpful and so far the entire system has worked perfectly except for operator error.

Flight Rating: 5 out of 5

Madcow Rocketry Mozzie

Summary:
This is a great rocket. It's my personal favorite, since it's big, fun, and can be flown on anything from a D to a G.

PROs:

  • Easy to build
  • Very strong and high-quality materials
  • Excellent recovery system
  • Good-looking rocket

CONs:

  • nose weight not included
  • fairly small parachute compartment

Overall Rating: 5 out of 5

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[Enter Flight Log]
Date Name Motor Ejection/
Altitude
Wind Notes
02-21-2009 John Bergsmith AT RMS F40-4 Just Before 5-10 mph winds Event: Club Fly
- First Flight - fast straight boost, awesome flight. The ejection was early, so the seven second delay would be close to perfect. Great rocket, can't wait to fly it again.
03-22-2009 John Bergsmith AT RMS F40-7 Apogee - Perfect 0-5 mph winds Event: Club Field
- This is a great motor combo for this rocket. Very stable boost,with some serious altitude. Recovered with no damage. This rocket is a lot of fun.
11-21-2010 John Bergsmith AT RMS F40-7 Apogee - Perfect 5-10 mph winds Event: Fun Fly
- Mozzie #2 first flight was perfect. Great flying model.
04-18-2009 John Bergsmith AT RMS F40-7 Apogee - NC Up 10+ mph winds RIPEvent: Club Field
- Perfect launch, weather cocked slightly into the wind. Nice ejection right at apogee, chute deployed perfectly. However, it landed in a tree about 60' high way off our field. Time to build Mozzie #2. Status: Tree/Roof
04-03-2009 Erich Bookwalter AT EconoJet F20-7 Apogee - Perfect 0-5 mph winds - Perfect Flight, Good chute, No Damage.
04-03-2009 Erich Bookwalter AT EconoJet F20-7 Apogee - Perfect 0-5 mph winds - This was the second flight of the day. It was windy at altitude, I had to walk a ways to get it, The rocket was standing straight up on one fin stuck in the muddy grass. but was surprisingly undamaged.
11-25-2009 Peter Lam Est SU D12-3 Apogee - NC Down 5-10 mph winds - Park flight for kids, slow boost, some weathercocking but a good flight.Recovery was excellent and the kids were impressed.
04-11-2010 Philip Levanda AT EconoJet F23-7 Just Past (1-2sec) 10+ mph winds - This motor puts this thing short for the 4 delay and the 7 is a little long. I'd go with the 7 again it popped with plenty of altitude.
05-02-2010 Philip Levanda AT EconoJet F23-7 Just Past (1-2sec) 10+ mph winds Event: Pine Island
- delay was a bit long.
03-01-2009 David Sindel Est SU D12-3 Apogee - NC Down 5-10 mph winds - Absolutely perfect flight - slow boost, perfect ejection, and good descent. Love this rocket!
03-15-2009 David Sindel Est SU D12-3 Apogee - NC Down 0-5 mph winds - Parachute stuck and didn't deploy at all, but amazingly it survived undamaged.
06-20-2009 David Sindel AT SU E15-4 Apogee - NC Up 5-10 mph winds Event: CATO 150
- Awesome flight.
08-14-2009 David Sindel AT EconoJet F23-4 Apogee - NC Up 0-5 mph winds Event: NERRF 5
- Nice flight on a smoky motor. The C-slot in the motor was closed and took a lot of work to open, though.
11-21-2009 David Sindel AT RMS E23-8 Late (2-3sec) 0-5 mph winds Event: CATO 155
- Drilled out to 5 second delay, but ejected at 8 seconds with no damage. Strange.
06-26-2010 David Sindel AT RMS G64-7 Apogee - NC Down Calm Event: NERRF 6
- Perfect flight. I love this rocket.

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