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REV 2.4 - Wed Aug 10 18:49:02 2011

Edmonds
Ecee
13326 Preuit Place
Herndon, VA 20170-4341
 
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SPECS: 13.5" x 14.5" - 1.41 oz
ROCKSIM FILE: MISSING - please submit here
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: 1/2A3-2T,  A3-4T

[Picture]
- by Moira Jean Whitlock [Who's Who Page]

[Rocket Pic]Brief description: This is an all balsa wood glider that flies up like a rocket and is recovered when it glides down like an airplane.

Pros and cons of construction: The parts are all there, secure within a plastic bag, Nothing was broken or defective. The fuselage of the model is panels of die cut plywood, as are the wings and canard. The motor tube is spiral wound paper. You also get blue modeling clay for trimming the glider. Do be careful with that stage, as I'll later tell you why. There is self-adhesive metallic tape to provide canard movement. All the moving parts in the recovery mechanism are balsa too. At apogee, the motor ejects, pushing a bulkhead forward, which locks down the canard, allowing gliding flight.

The instructions are illustrated and clear, logical in order, and the model goes together simple and precisely. Wood glue is fine for this. Sanding sealer and sanding makes the wood smooth and protects it. The model is overall sturdy and a looker.

Pros and cons about finishing: A simple paint job is enough, but I placed strips of shiny self adhesive craft paper along the wings and canard for looks, like the manufacturer picture. I chose a red, green, and metallic color scheme.

Rating for construction and finishing: 4 out of 5

[Rocket Pic]Pros and cons for flight: Recommended motors are: Apogee 1/4A2-2, 1/2A2-2, A2-5, and B2-5. I chose the B2-5. This is the truly embarrassing part. Gliders aren't like rockets. Whereas rockets become stabler when weight is added nose-ward, gliders don't. They soar down nose first in a death dive if so. I placed the clay provided in the nose. When the model flew on an Apogee B2-5, it went up, then laterally, nearly beheading a fellow rocketeer. He teased me for weeks, saying that I was out to get him. The model thudded to the ground, losing a wing and fragmenting the nose. I took the pieces home and rebuilt it.

Oddly, repair went well, and the model looks a little veteran-like, but flyable. I trimmed it with extensive tosses in my garden with tested weighting tailward and lightening the nose. I fixed it so that it flew straight without stalling or diving. So I tried again with a B2-5 in an empty park, where I could keep it to myself if it decided to act up again. This time, it flew in little circles and came to rest about a hundred feet downrange.

Pros and cons about recovery: Remember, don't weight the nose too much! When recovery goes right, the glider arcs in graceful circles on its way down. Nice.

Rating for flight and recovery: 4 out of 5(when done right)

Summary: Easy to build, rugged and easy to repair. Attractive. Pretty circular glides. Not a bad price at $12.95. Don't overweight the nose, and do test-toss it before flight. I also recommend Apogee's technical publication on glider trimming. It helped me with my repairs and reworking.


Rating
(Contributed - by Hank Helmen [Who's Who Page] - 03/26/06) Edmonds Ecee

Brief:
The Edmonds Ecee is a balsa single stage 1/2A sized rocket boosted canard glider that uses variable geometry during recovery glide.

Construction:
A plastic bag contains all laser cut balsa wood. The particular kit built for review had very lightweight wood. Perhaps too light. More on that later.

Included in the kit are nicely laser cut parts, two sheets printed front and back of instructions, one body tube, tape for the elevator (canard) hinge, and a launch lug.

The four pages of instructions are great and easy to follow. Building the Ecee is a breeze. It took my six year old son and me less than an hour to finish. The fuselage is square and was a little tight around the body tube. Do not glue the round dowel into the body tube, as it must be free to slide in order to activate the canard elevators.

Edmonds Ecee Once everything was together, it came out OK. I had to use a little plastic modeler's clamp to hold the fuselage while gluing. Also I used some 90 degree steel blocks to support the fins while gluing. Make sure you get the ejection charge exhaust hole pointed downward and toward the front of the fuselage, It needs to line up with the 1/4 inch slot in the bottom. This kit seems a little flimsy since the balsa is so soft.

The only tools required were a bottle of white glue, a sanding stick with some fine sandpaper on it, and a hobby knife. I used some CA glue on some parts. The finished rocket does come out light.

Finishing:
Rocket gliders need to be light. Conventional finishing with normal paint will add a lot of weight. For this reason, trim markings were added to wings and fuselage with Sharpie Magic markers.

There are no decals included in the kit. The Ecee looks very cool when finished as it has a nice full fuselage and canard wing design that are attractive and aerodynamic looking.

Construction Rating: 4 out of 5

Flight:
The recommended motors are 13mm 1/2A3-2T and A3-4T. For the initial test launch, we chose an Estes A3-4T. To prepare the glider for boost, a pencil must be used to push the canard elevator actuator to the aft position. The ejection charge pressurizes the internal body tube and pushes the little balsa dowel actuator against the elevator control horn to make it deflect downward approximately 15 degrees. In theory, you should get a straight boost then a nice glide. The model should be hand flight tested with the elevator deflected full down and a spent engine case in.

Test glides were great. A tiny bit of clay was added to the rear of the fuselage for good balance.

Ready for take-off Lift-Off

The motor is held in place by clear tape. A wrap of tape is put around the motor where it fits into the body tube and a little more on the outside of the case where it sticks out, to prevent it from pushing up into the tube during launch. There is no motor stop ring in the kit. No recovery wadding is needed for the Ecee

Edmonds Ecee

The very first flight was a scary disaster! Just 15 feet above the launch pad, the Ecee's left main wing separated right in the middle! The vehicle veered over 90 degrees in a rapid series of fiery smoking tumbles and gyrations. We dove for cover as the model tumbled around the sky until the engine finally ejected. What was left of the wreckage then tumbled to the ground. On closer inspection it was discovered that in addition to the broken wing, the elevator had broken off at the hinge line.

Edmonds EceeRecovery:
There is no shock cord on the Ecee. Preparing the glider for launch is conventional. The recovery was disappointing to say the least as this thing had flown so nicely in all the test glides. The damaged wing and elevator should be relatively easy to repair, and we will return to flight in a day or two.

On the second flight, the wing held together nicely but boost was a bad arch right into the ground. The fuselage broke in two just behind the canard.

Flight Rating: 2 out of 5

Summary:
We really liked the way this kit looked when it was finished. The ease of assembly is a real bonus. The glide of the Ecee is very realistic and majestic. That is why it was such a disappointment when it shredded on the very first launch. The wings could be a little denser grade of balsa. We had to add tail weight anyway so this wouldn't be a problem with overall weight.

Overall Rating: 2 out of 5


(Contributed - by Alan Rognlie) 

[Rocket Pic]After my good experience with Edmonds Deltie, I decided to try this model from Rob Edmonds. I ordered it from Apogee Components (along with a second Deltie, a plan set for a Nike Hercules and a couple of his technical reports) and it arrived within 4-5 days. This kit builds to a nice mini-motor (13mm) rocket glider - i.e. no parts are dropped at ejection. During boost, the movable portion of the canard is free to move. Actually, with the positioner placed under the movable portion the canard tends to have a negative incidence. The ejection charge pushes forward a body tube plug that forces the canard to positive incidences. All the balsa parts for this kit are laser-cut, except for the nose and the BT plug. Like a Deltie, this results in a self-jigging kit that is extremely easy to build. The only nit I have to pick is that Rob does not include an engine hook or an engine block in the kit. The engine is to be held in place with masking tape. I added an engine block to positively position the motor during boost, and I'll hope the tape will hold the motor casing at ejection. 

[Submit your Opinion]

GUEST's OPINION:
02/07 - "This is my favourite Edmonds kit. A refreshingly different build to your normal 3FNC rockets, but still straightforward. Be careful how you affix the canard, it must not touch the fuselage when deployed - if it does, there is a likelihood of catastrophic failure when the ejection charge forces it into place at high speed and the movable canard slaps into the rigid body. I made the mistake of placing the trimming clay at the rear of the glider. This meant that the masking tape used to retain the motor slipped off at ejection and the glider spat the engine. Despite being trimmed with a spent engine, the Ecee kept gliding for what seemed like hours. I will have to get the Thunder version as well." (D.B.)

GUEST's OPINION:
09/02 - "As the review said it is a very easy and quick build and parts are cut smooth and accurate and fit together well. I tried doing some hand tossed glide tests in a grassy area and after a few test glides I succeeded in breaking the boom as shown in the picture. I glued it back together with white glue. On it's maiden flight I think I used a C motor. (It's been awhile)It boosted straight and high and then while very high and still ascending the boom broke again in the same place. It all tumbled back down slowly in two pieces with the wing and boom section occasionally gliding a bit. I guess I should have patched it back together with CA or epoxy instead of white glue. I am not sure if the flight stress broke it or I think it might have broke from the torque from the ejection charge as it vented out the vent hole. I have not put it back together again because I am still debating on reinforcing the boom at the break with a couple of small pieces of balsa or paper or just use CA or epoxy. I am afraid if I splint it, it might make the nose to heavy for a good glide. A friend of mine gave me this kit and also got one for himself. His flew great and sustained no damage. It glided so straight though that we thought it was going to fly out of the field but it came down before reaching the trees. He tried sanding a slight bevel on one side of the vertical fins to induce a turn but on the next flight it still glided very straight. The way the boom is notched for the canard makes for a stress point at the trailing edge of the canard. I think it might would not be as easily broken if the boom was not notched for the canard and just glue the canard straight to the bottom of the boom. Of course this change would have to be done by the manufacturer as the boom comes already notched." (J.R.R.)

GUEST's OPINION:
06/02 - "I really like these Edmonds kits. I built the Ecee on the morning of a launch and took it there with the glue still wet. We left it in the car to "heat-cure" and flew it at the end of the day. The 1/2A load provided a moderate boost, and the glider rounded over and appeared to be trying to glide. At that moment the taped-in motor ejected itself from the glider with a very loud "POP" and the glider shot forward and up like a scalded cat. It then settled into a flat glide that drew applause from the crowd. Obviously, I had no chance to glide-test it, and there was no clay provided in our kit, but the Ecee flew very well even without the spent engine in place. It seems that a stronger engine restraint system is in order, but even if the engine comes out, it glides well." (G.A.D.)

GUEST's OPINION:
09/99 - "This rocket performed like a champ for me. I added a home-built engine lock from a piece of music wire, which worked fine for me (I really hate engines held in with tape). It did finally cato (looks like a full-immediate burn on the engine), which ate it, but I bought another one and will soon be flying again!" (K.W.)

[Enter Rocket Specific Tip]

SPECIFIC ROCKET TIP:
07/07 - "After working with this rocket off and on for almost a year, I had given up. But then...Finally got it to fly nice recently! Suggestions: Reinforce both of the forward fuselage sides with an extra piece of Balsa & CA glue, or 3/4 oz. fiber glass cloth and 50% resin Alcohol mix. Reinforce wing center section on both wings with tissue paper and clear dope, or white glue thinned with water (to milk consistency). Then, In the early morning or Late evening...with NO wind , Hand launch over grass to test glide, add tiny 1/8" ball of clay to nose or tail, test glide again, then repeat, add 1/8" ball of clay to one wing to induce circling glide, Test fly again. Use a 1/2A size engine. Enjoy! It's worth it! I now up grade my flight rating to 4" (H.H. )

[Enter Flight Log]
Date Name Motor Ejection/
Altitude
Wind Notes
05-07-2005 Anonymous Est SU A3-4 Apogee - Perfect 5-10 mph winds Event: NSL 2005
- Great flight in approx 6 MPH winds. Perfect trim, with no added weight (it doesn't penetrate into the wind too well like this). Made one circle and landed into the wind within 100 feet of pad.
09-17-2005 Edward Chess Est SU 1/2A3-2 None - Glider Didn't Record Event: Bong
-
07-15-2006 Edward Chess Est SU A3-4 Apogee - NC Down 0-5 mph winds Event: Woosh/Bong
- Engine ejected, but glided to nice landing anyway.
04-03-2005 Andrew Grippo Est SU A3-4 Apogee - NC Down 5-10 mph winds - Great boost glider. Kit goes together well and flys very good. Everyone watching loved it. No damage and a perfect gliding recovery
11-03-2005 Andrew Grippo Est SU A3-4 Apogee - Perfect 5-10 mph winds - Fun to watch spiraling flight down to ground.
11-03-2005 Andrew Grippo Est SU A3-4 Apogee - Perfect 5-10 mph winds - Piston worked well to lock wing and glider spiraled down to ground.
01-07-2006 Andrew Grippo Est SU A3-4 Apogee - Perfect 5-10 mph winds - Good spiraling flight down to ground. Fun to watch and the kids loved it.
07-29-2006 Andrew Grippo Est SU A3-4 Apogee - Perfect 0-5 mph winds - Good Boost but the little piece of wood that pushes the fins into glide mode broke and the glider did a swan dive. Repairable
04-17-2005 Kyle Hancock Est SU A10-3 None - Glider 0-5 mph winds Event: Viking Sport
- Tore wing in half on boost.
06-19-2005 Kyle Hancock Est SU A10-3 None - Glider 5-10 mph winds RIPEvent: Viking Sport
- Wing broke on boost again. Status: Not Repairable
03-16-2006 Hank Helmen Est SU 1/2A3-4 Very Late
(20 ft)
0-5 mph winds - Bummer flight! Right wing broke completely in two. Crazy gyrating flight until ejection charge fired. Looks repairable. Found most of the big pieces.
03-26-2006 Hank Helmen Est SU A3-4 None - Glider
(83 ft)
5-10 mph winds Event: field day
- Second flight, big arch~! Power dive into the ground. Broke fuselage in two behind canard. Repariable.
05-08-2007 Hank Helmen Est SU 1/2A3-2 Apogee - NC Up
(60 ft)
Calm Event: Evening Launch
- Finally straight boost after many tries, not high. Motor popped out shot glider up few more feet,lot of smoke very cool. Fantastic glide over neighbor's yard behind tree across road into other neighbor's yard! Nice
05-08-2007 Hank Helmen Est SU 1/2A3-2 Apogee - NC Up
(61 ft)
Calm Event: Evening Launch
- 3rd try on model, 1st launch broke wing, 2nd launch broke fuselage. 1/2A3 is a pretty good motor for ECEE. Might try teensy bit more power, 1/2A6-4? Doesn't go high but nice and straight with good glide.
05-08-2007 Hank Helmen Est SU 1/2A3-2 Apogee - NC Up
(60 ft)
Calm Event: Evening Launch
- Straight up boost. Glider flipped over on ejection, but after a nose down dive began a nice smooth glide.
05-08-2007 Hank Helmen Est SU 1/2A3-2 Apogee - NC Up
(60 ft)
Calm Event: Evening Launch
- Dead straight boost, glider flipped over in its own smoke, then geat glide!
05-19-2007 Hank Helmen Est SU 1/2A3-4 Very Late
(45? ft)
10+ mph winds Event: GCPR Picnic
- Puzzeling flight for this rocket. Last flight was great this time arched over onto ground, landed during delay burn, ejected engine on the ground. No damage.
05-19-2007 Hank Helmen Est SU 1/2A3-4 Very Late
(55 ft)
10+ mph winds Event: GCPR Picnic
- Another strange flight. Arched over again, Finally ejected very late, ejection charge shot glider up again, and into a good glide. Wierd!
05-19-2007 Hank Helmen Est SU A3-4 Very Late
(50 ft)
10+ mph winds Event: GCPR Picnic
- Yet again the arch and the late ejection. Used same engine the other day on this rocket and it flew great. Maybe it was just too windy on this flight? No damage to glider.
09-21-2008 Hank Helmen Est SU 1/2A3-2 Apogee - NC Down
(100 ft)
0-5 mph winds Event: Maggie's Birthday
- Weak boost. Motor kicked out on ejection, elevators did not fully deflect. Still managed a short glide into high grass. Need to make a motor retention device on this rocket.
10-13-2008 Hank Helmen Est SU A10-4 None - Glider
(100 ft)
Calm Event: Evening Launch
- Wierd looping boost. Glide was OK but somewhat nose down. Found canard elevators only partly deployed. Ejection charge was very weak.Wing cracked at root this time. Repairable.
09-19-2010 Brian Hoover Est SU 1/2A3-2 None - Glider 0-5 mph winds - Nice boost, clean transition to glide. Glide had slight vertical oscillation and was dead straight. Need to make it turn in glide, will add weight to one wingtip for next launch. Very nice, easy model.
11-06-2010 Brian Hoover Est SU 1/2A3-3 Just Before 5-10 mph winds - low flight, boost was weak - think the motor was loaded light
12-26-2010 Brian Hoover Est SU 1/2A3-4 Late (2-3sec) 5-10 mph winds - best flight yet, good boost coast too long, glide great with the wind
12-15-2002 MikeyR Est SU 1/2A3-2 Apogee - NC Up Calm - Only partially deployed the canard. No damage.
05-26-2003 MikeyR Est SU A3-4 Apogee - Perfect Calm - Beautiful straigt boost and glide
07-04-2003 MikeyR Est SU 1/2A3-2 Just Before Calm - Ejected motor, fairly major damage, but will fly again.
12-02-2006 Mark Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds - 4 secs is too long. 2 is much better.
12-02-2006 Mark Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds - careful attention to motor retention kept it in this time.
12-02-2006 Mark Muir Est SU 1/2A3-2 None - Glider 5-10 mph winds - Nice 2 sec delay and flight!
12-02-2006 Mark Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds -
12-02-2006 T Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds -
12-02-2006 T Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds - Hard, nose first landing cracked fuselage at main forward joint. Spling and drying time for repair.
12-02-2006 T Muir Est SU 1/2A3-2 None - Glider 5-10 mph winds - Nice long flight
12-02-2006 T Muir Est SU 1/2A3-4 None - Glider 5-10 mph winds -
07-08-2006 Todd Mullin Est SU A3-4 None - CATO 0-5 mph winds RIPEvent: Fiesta Island
- Perfect boost, ejection was too energetic for the airframe and tubing. Canard activating piston area of glider destroyer, tubing delaminated, glider nose seperated. Might be able to salvage the wings and canard, not much else left... Status: CATO'd
08-24-2004 Chan Stevens Est SU A3-4 Very Late 5-10 mph winds - Very poor flight in 8 mph winds, 75' altitude, horizontal path
05-04-2008 Dwayne Surdu-Miller Est SU 1/2A3-2 Apogee - NC Up 0-5 mph winds - First flight. Nice straight boost. Ejection while nose was up knocked glider into a short dive that quickly leveled out. Gentle straight glide. Gentle landing. No damage. Nice glider!
05-04-2008 Dwayne Surdu-Miller Est SU A3-4 Apogee - NC Down 0-5 mph winds - Straight high boost. Dived quite a bit before ejection, which popped the nose up right into a glide. Beautiful slow spiralling glide. Gentle landing. No damage. I suspect an A3-2 would work better for this one.
05-04-2008 Dwayne Surdu-Miller Est SU A3-4 Apogee - NC Down 5-10 mph winds Event: Club Launch
- Added weight to tail to try to level glide. Boost with gentle wearthercocking arc. Ejection slight after apogee. Nose kicked up, then rocket went into a flat spin and landed gently. No damage.
05-04-2008 Dwayne Surdu-Miller Est SU A3-4 Apogee - NC Down 5-10 mph winds Event: Club Launch
- Remove some weight from tail. Boost & coast with gentle weathercocking arc. Ejection slight after apogee, nose popped up, and saw interesting planar contrail as glider flew threw ejection. Slow spiral, gentle landing. Beautiful flight!
06-15-2008 Dwayne Surdu-Miller Est SU A3-4 Just Past (1-2sec) 0-5 mph winds Event: Club Launch
- Angled boost & coast. Nose down at ejection, then smooth transition to glide. Beautiful glide, very slow arc to the right. Gentle landing.
06-15-2008 Dwayne Surdu-Miller Est SU A3-4 Just Past (1-2sec) 0-5 mph winds Event: Club Launch
- Boost and coast straight up, with slow spin. Nice altitude. Smooth transition to glide. Gorgeous glide, with slow arc to the right. Gentle landing.
07-06-2008 Dwayne Surdu-Miller Est SU A3-4 Apogee - NC Down 0-5 mph winds Event: SAROS launch
- Straight boost and coast. Arched over to dive. Ejection flip nose up into a gentle, slowly spiralling glide. Gentle grass landing.
07-30-2005 Alan Tuskes Est SU A3-4 None - Glider 5-10 mph winds Event: NARAM-47
- Very straight boost, but I didn't use enough tape for the energetic Estes ejection charge. Engine kicked out, and the glide was steep and spiraling. No damage.
07-30-2005 Alan Tuskes Est SU A3-4 None - Glider 5-10 mph winds Event: NARAM-47
- Second flight for this one today. Once again, engine wasn't secure, and was ejected again. Sturdy glider, no damage in spite of spiraling in.

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