About this Plan
Bluebird. CO2 sport cabin model.
Quote: "AFTER BUYING a Telco CO2 engine and installing it in a couple of kits modified to suit, I came to the conclusion that what I really needed was a purpose built model to make the best use of this wonderful little engine. What I wanted was a nice looking model that was simple to make and light in weight so after some doodling, Bluebird was born and a sweet little flyer she has turned out to be; its low cost and quick building make it ideal as a first CO2 model.
Start with the fuselage by cutting out the 1/16 sheet cockpit sides and pinning one of them to the plan. Next, select your four main longerons from fairly hard square and pin them down to the plan in the usual way. Do not put the pins through the longerons but position them each side. Add the 1/16 square uprights and allow it all to dry; when it is dry, build the other side over the top of the first. When you are quite sure this is dry remove it all from the plan and separate the two sides with a thin blade. Glue F3 and F4 into posi-tion on one side and when dry, glue the other side on to the formers, making sure everything is square. When dry, pull the tail end together and glue, hold together with a peg until dry. Glue into position F1 and F2 plus all the cross braces in the nose area and rear fuselage.
Complete the fuselage by adding undercarriage, wing dowels, charger ply backing and 1/32 sheet cowling glued into position. The lower engine cowl is optional and the CO2 tank is a push fit between the formers. This allows the engine tank and charger valve to be fitted and removed quite easily. Put the fuselage to one side to admire, and then start on the wings which are straight forward.
Use hard mainspars but keep the wing ribs and wing tips light by using softer wood. When both wing panels are com-plete pin the centre section to the plan making sure the ribs are set at the required angle to give the correct dihedral angle. Glue each wing LE and TE to the centre section ribs propping up the wing tips until the whole wing is dry. Now cut a 1/16 square slot behind the main spar in the centre section and glue in a 1/16 square hard brace.
The fin and tailplane are made from medium density 1/i6in square and built directly over the plan as usual. Sand off the whole airframe lightly to remove any bumps or glue and cover the structure with lightweight tissue and give no more than one coat of thinned clear dope mak-ing sure there are no warps by steaming straight over a kettle. Keep decoration to a minimum for maximum performance. The prototype used a cut down Tern 6 in plastic propeller which has given it a good performance but you can experiment with different props and engine speeds, that's one of the beauties of these little engines.
When trimming, have the engine running at low revs as this reduces the drag caused by a stationery prop on the glide after a short power burst. The tailplane TE can be bent to aid trimming; try to trim for a large circuit and don't forget your name and address, and running shoes. Bluebird is very stable and will fly in windy conditions quite well, due to its ability to weather-cock,so get building and have some fun flying."
Quote: "Hi Mary and Steve, please find attached the Bluebird plan and article. I built one eons ago (well, in 1981) and it was a nice model. The main problem was the CO2 motor, a type of motor I never quite managed to 'master'... maybe due to the Sparkelts? I will probably build it again one day, this time using an 1S electric motor and one of the new small Parkzone 'bricks' or one of its 'clones'. That way it will fly nicely either indoors, or outdoors in calm weather. A bonus point is that it can, literally, be built in front of the telly! Hope you like it, please do keep up your excellent work. Best regards, AC"
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User commentsThe photos [model photo & more pics 003] are scans from 35 yo slides, taken at the time the model was built - my 23rd (aero)model, as the 'serial number' attests to! By then (1981) I had just started flying RC with an Orange Box oz7292 . Yes, it is on your database now, and what a pleasant surprise it was to see it 'enter' it! In fact, when it came up (remember, I take an Outerzone daily fix!) I passed a copy of your Orange Box files to all those that I knew at the time, some of them having built that same glider at the time (1980-81). Regarding the Bluebird, it is covered in Esaki tissue, a 'new fangled' tissue then - in Europe, I mean! I chose light blue for obvious reasons (BLUEbird!) with a little red, as I always did (and still do) to improve visibility. The fact that I did cut and paste the BLUEBIRD letters from the plan was not such a good idea after all ... as the printer toner was not *cellulose* proof... 😁 You can see the slight black/grey 'shadow' around the nose, that resulted from the dope application...
ArnaldoCorreia - 25/11/2016
I have included a couple of (quite bad ...) flying shots of my Bluebird [more pics 007, 008]. Yes, I did managed to fly it, CO2 engine and all!
ArnaldoCorreia - 24/03/2017
Enclosed pictures of my Bluebird built from plan 8177 [more pics 009-013]. Converted to RC with brick and motor from a wrecked Dromida Voyager. Many hours of fun to date, although on the heavy side due to reinforcements in the control surfaces. Omitted UC for belly landings in grass surfaces. Many Txs for your inspiring site!!
EnriqueAlvarado - 14/11/2018
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