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REV 2.4 - Sun Oct 24 00:02:13 2010

Edmonds
DeeCee Thunder
13326 Preuit Place
Herndon, VA 20170-4341
 
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SPECS: MISSING
ROCKSIM FILE: MISSING - please submit here
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: D12-3

Rating
(by Todd Mullin [Who's Who Page] - 06/15/07) Edmonds Dee Cee Thunder

Brief:
The DeeCee Thunder member of the Edmonds "Thunder" series of large gliders. This rocket features a canard (rear wing) glider with a pop-pod.

Construction:
The DeeCee Thunder's components are:

  • Several 1/4" thick sheets of laser cut balsa parts
  • 1 BT-50 Body tube
  • 1 BNC-50 Balsa nose cone
  • 1 3/16" Launch lug
  • 1 Aerospace Specialty Products 12" parachute kit
  • 1 1/4" Elastic shock cord
  • 1 Instruction Booklet
Edmonds Dee Cee Thunder

All of the necessary parts for the kit were present and accounted for when I opened the poly bag that they came packaged in. The balsa was nice and firm with the laser parts being well cut without too much scorching on the edges.

The only component that I was concerned about with the kit was the shock cord. The instructions say to trim it to about 18". The elastic I got with my kit was probably not even 12". I added about another 12" by tying on some Kevlar® cord that I had in my parts bin.

The instructions for the DeeCee Thunder are a total of three sides of the two 8.5" x 11" sheets of paper. The are generously illustrated to the point that the text is really almost unnecessary!

The first page is a diagram showing how to fit the six pieces of the glider together. Yes, you read that right. The glider only has six parts and they are all notched and tabbed to fit perfectly. If you are looking for a complex build, this rocket is not it! However, it is ideal for a rookie builder, child or just a quick, fun build! The only slight "gotcha" is something not mentioned in the instructions. The laser charred edges of the balsa should be sanded lightly to remove the char to promote good solid bonds between the parts. Not sanding could easily lead to the parts snapping apart as was mentioned in the previous review.

The construction of the pop-pod is nearly as simple as the glider. The glider hook is three balsa tabs that are stacked and glued together and then to the body tube. The instructions say to glue a strip of paper in between the layers to make sure the fit of the glider boom is loose between the tabs. I opted not to do this and just sanded the tabs a little.

Next the launch lug is glued on the body tube next to the glider hook. The parachute is next to be assembled. The shock cord is glued in with a standard three-fold anchor and a screw eye holds everything to the nose cone.

Edmonds Dee Cee Thunder

Finishing:
This kit flies fairly well built totally stock even with no sanding. There is a small girl who flies one at our launch site that almost lost hers over the boundary of the flying field. It is about as unfinished as the kit can be!

I wanted to make a little better effort and see how performance could be increased. All of the edges of the glider were either rounded or tapered and the whole glider was sanded smooth. I filled the gaps and dings in the balsa with lightweight filler.

In reading the comments on this kit here on EMRR, I noticed one that said that there was a problem with the glider body suffering burns from the motor on boost. To avoid this problem, I wrapped the body in a wrap of aluminum foil, sealing it on with super glue.

As always with a glider, trimming is essential. This may sound complicated, but it's not really. Just hand toss the glider, adding small bits of the included clay weight to the nose or tail until the glide is nice and smooth! The kit could have been flown stock, but with a bit of effort, it was getting great glides even from a gentle toss!

Construction Rating: 4 out of 5

Edmonds Dee Cee Thunder

Flight:
We got to the flying field early that day of the launch to try and beat the wind. It was breezy but not too windy. Unfortunately, the dealer who usually shows up to sell motors was at another launch so I only had one motor for the DeeCee!

There is no motor retention or thrust ring so we friction fit the motor with a few wraps of masking tape and added a few more around the tail end of the motor to keep it from sliding up into the body tube at launch.

A quick pinch of cellulose wadding and a fold of the chute and we were off to the pads. The instructions recommend loading the pod onto the rod and then hanging the glider on it. This technique worked well and allowed us to adjust the clothes pin we were using as a stop to the correct height without dinging up the glider. We also used the clothes pin as an umbilical clip to hold the clips.

The DeeCee Thunder boosted nicely and reasonably straight. At ejection, the pod's shock cord got caught for a second on the glider but pulled free almost immediately and the chute unfurled.

Recovery:
The glider flew slow, lazy circles around the sky, almost hanging motionless as it turned into the wind and picking up speed as it flew down wind. Not a competition class glider, but it turned in a respectable flight and didn't take any landing damage.

The parachute is sized fairly well for the pod. Not too much drift and it came down slow enough to not sustain any landing damage.

I saw no evidence of scorching on the glider body so it looks like my aluminum foil insulation worked.

Flight Rating: 4 out of 5

Edmonds Dee Cee Thunder

Summary:
This rocket was primarily constructed by my 12-year old daughter for her 4H rocketry club. She has built only a few almost ready to fly 3FNC kits but had no problem with this one with only minor supervision and coaching. We wanted something that was a bit more fun to fly and this was definitely the ticket. Hopefully she'll have as much fun with her rocket as I have had with my Edmonds kits.

I am a big fan of the Edmonds line of kits and have built several others. The DeeCee Thunder is not nearly as complex as its big brother, the Ecee Thunder or the Arcie II, but still gives the "ohs" and "ahs" from the people on the flight line when a big glider boosts off the pad.

I was somewhat surprised by the previous review of this kit. We had none of the problems that the previous reviewer did so I felt that I should post a second review as a counter balance for what I think is a fairly sturdy, well designed kit. The only thing I didn't like about the kit was the shock cord, which was very short and only about half the length it should have been but this was easily fixed.

Overall Rating: 4 out of 5


Rating
(by Eddy Pula)

Brief:
Boost-glider with booster parachute.

Construction:
A 26 in tube with a glider and no fins. 22 in shock cord. Mine did not come with a nose cone so I used a Estes Alpha 3.

The Booster and glider instructions were brief but easy to follow. Easy construction. The glider is very fragile, maybe it was just my stupidness but it broke twice during transportation.

Finishing:
There were no decals but I couldn't put them on right anyway, so I didn't mind.

Construction Rating: 3 out of 5

Flight:
The instructions do not specify the way you mount the Glider, so I e-mailed Rob Edmonds and he gave me guidance. The glider does not fit well on the holder and requires much tape to keep on. The recommended motor is a D but I wanted to see the whole flight and and shoved a C6-7 in a hollowed out D engine. The flight went about 30 feet and nose dived, ejecting the engine after it dug itself into the ground. Surprisingly there was no damage. My mistake in a bad motor, so I did not count this against the kit. I again launched it this time on a D and maybe a second after launching the glider came off. The glider is the only thing that gives the rocket guidance and it went crazy in the air.

The glider either is stuck to the booster or is way too loose.

Flight Rating: 1 out of 5

Summary:
The pro's are it seems like a cool idea when you are building it. The cons are overall bad design.

Overall Rating: 1 out of 5

[Submit your Opinion]

GUEST's OPINION:
03/07 - "I now have two good flights on my DeeCee Thunder. This is one of the good Edmonds kits. Easy to build. It must have at least a C11-3 engine or bigger! Glider almost glides too well! Did get a very minor motor blast burn on the top of the glider fuselage." (H.W.H.)

GUEST's OPINION:
07/05 - "I disagree on the above, the build was quick and simple, although it did require a lot of mass on the nose to balance. It has given me two excellent flights and one interesting charcoal moment (see tips and hints)" (M.K.W.)

[Enter Rocket Specific Tip]

SPECIFIC ROCKET TIP:
07/05 - "My Deecee (thunder) fuselage got burnt (in half!) on its third flight, my rebuilt Deecee now has a layer of aluminum tape protecting its fuselage just under where the motor goes. this has stopped flash burns on by other gliders in the past." (M.K.W. )

[Enter Flight Log]
Date Name Motor Ejection/
Altitude
Wind Notes
06-25-2005 Matt Gillard Est SU D12-3 None - Glider Calm - Straight of the pad, arched over and separated smoothly, glider circled in a wide loop landing gracefully 30 meters from the pad in a slow belly landing- this rocket glider rules.
06-25-2005 Matt Gillard Est SU D12-3 None - Glider 0-5 mph winds - straight launch, twisted on separation and a thud was heard as the booster and glider collided, glider recovered and glider of down wind, circled into a tree, was able to recover, no damage.
07-12-2005 Matt Gillard Est SU D12-3 Apogee - NC Up Calm RIP - After repairing the burnt out boom and applying silver tape, the deecee thunder gave an arched flight and failed to separate, both rocket and glider returned via parachute, will modify release catch Status: Retired
07-01-2005 Matt Gillard Est SU D12-3 Apogee - NC Up 5-10 mph winds RIP - Straight up fast, failed to separate from booster tube, flames from motor set the fuselage of fire, glider and booster floated down and landed flat, burning steadily. I'm going to rebuild the glider. Status: Not Repairable
04-03-2005 Andrew Grippo Est SU D12-3 Apogee - NC Down 5-10 mph winds - Good flight with this motor but the kit seems like it will handle an Estes E without a problem. Took a little bit of time but ended up with a nice glide recovery. Flying this kit was a lot of fun for everyone watching because it is so big.
06-02-2007 Andrew Grippo Est SU D12-3 Apogee - Perfect 0-5 mph winds Event: Monthly Launch
- Nice long gliding flight that turned around at the last moment to come back into the field. Perfect landing, no damage and nice recovery.
04-09-2006 Hank Helmen Est SU D12-3 Very Late
(225 ft)
5-10 mph winds Event: Lyons Field Trials
- Relatively straight boost. Booster ejected on downward coast. Nice Straight glide! Booster recovery on supplied parachute near pad. Long glide caused glider to inpact top of tall tree. Recovered with 16 ft. pole.
03-25-2007 Hank Helmen Est SU C11-3 Apogee - Perfect
(326 ft)
0-5 mph winds Event: 1st Spring Meet
- Straight boost,Quick ejection. Glider did a half roll into steady flight Booster parachute did not eject nosed in 10 ft. from pad. Glider tracked 30 seconds over cow fence straight to top of tallest tree down wind!
06-10-2007 Todd Mullin Est SU D12-3 None - Glider 0-5 mph winds Event: Fiesta Island
- Great flight! Nice boost, red baroned for a second, but then the pod pulled free and the glider flew slow, lazy circles
08-12-2007 Todd Mullin Est SU D12-3 None - Glider 5-10 mph winds Event: Fiesta Island
- Glider stuck on pod for a few seconds before pulling free. Glider came in very steep... almost vertical. Didn't pull out of dive. Small crack in wing that was field repairable.
09-09-2007 Todd Mullin Est SU D12-3 None - Glider 5-10 mph winds Event: Fiesta Island
- Wow! What a flight! Glider landed at least a half mile or more downwind... in the bay. Rescued to fly another day by a passing canoe.
12-30-2007 Todd Mullin Est SU D12-3 None - Glider 0-5 mph winds Event: Fiesta Island
- Glider ejected from pod and entered nose dive. In this attitude, it does not have enough lift to pull out. Hit hard, cracking wing and breaking off one wing tip. Easy repair job.
12-30-2007 Todd Mullin Est SU D12-3 None - Glider 0-5 mph winds Event: Fiesta Island
- First flight after hanger rash removed elevator and canard. Perfect boost. Nice slow circles.
12-30-2007 Todd Mullin Est SU D12-3 None - Glider 0-5 mph winds Event: Fiesta Island
- Slight loop on boost. Lost a good deal of altitude before ejection activated elevator.
01-26-2008 Todd Mullin Est SU C11-3 None - Glider 0-5 mph winds Event: Fiesta Island
-
03-22-2008 Todd Mullin Est SU C11-3 None - Glider 0-5 mph winds RIPEvent: Fiesta Island
- Landed on a road and was crushed to splinters by a passing vehicle. Status: Not Repairable
   

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