The Circle Dancer 3000 Full House Electric V2
is a beautifully constructed balsa and carbon almost ready to fly version of the venerable Bubble Dancer by Dr Mark Drela. The Full House
appellation indicates that this version has the wing built with flaps and ailerons, to give precise approach control and slow landings. This product page is for the electric version with ailerons and flaps, even though some of the photos show the pure glider RES model.
Although the structure is simplified in comparison to the original BD design, the aerodynamics are very similar, and the Circle Dancer 3000 Full House V2 has excellent performance and great handling. This version has reduced dihedral to work better with the ailerons, and to give positive roll control. The ailerons and flaps can be actuated together to adjust the airfoil's camber to provide a wider speed range, allowing the model to be turned tighter in thermals and to return from great distances downwind with confidence.
The fine fuselage consists of a lightweight Kevlar, glass, and carbon pod molding with a small pylon for mounting the wing above the fuselage, to reduce interference drag. The fuselage has the motor firewall already mounted, with holes for common motors ready drilled. The fuselage nose incorporates a large (18 cm long) hatch to allow easy access to the motor, battery, and rudder and elevator servos. The hatch is very nicely molded from carbon fibre and incorporates a positive attachment system. The V2 fuselage has been updated to use a molded carbon tailboom incorporating a small pylon for the tailplane/horizontal stabiliser. The pushrod outers are bonded in place, and all the tail pushrod hardware is supplied. The fuselage update has reduced the fuselage weight, improved strength, removed weight from the tail extremity, and has reduced the size of the shipping box, allowing us to post the model overseas more easily.
The tailplane is a feather weight built-up balsa and carbon construction, covered with lightweight transparent film and is supplied ready to bolt onto the rear pylon mount. The V2 tailplane is of improved construction and includes a separate ready hinged elevator for faster pitch response.
The wing is expertly constructed from balsa and carbon, with beautifully applied transparent film covering, in contrasting colours. The centre panel incorporates large flaps, which are ready hinged, and can be actuated to 90 degrees deflection if required. The tip panels include good sized ailerons. Overall the standard of construction is excellent, and the prefabrication is very complete. The only things left to do are gluing the tailboom to the pod, gluing the fin, installing the control surface control horns, fabricating linkages for the flaps and ailerons, and fitting the RC and powertrain.
Note all the photos above (not below) show the rudder/elevator version of the Circle Dancer 3000 V1, which has extra dihedral. The Circle Dancer 3000 Full House has a flatter wing, and of course flaps and ailerons.
The Circle Dancer 3000 Full House centre and tip panels.
The Circle Dancer 3000 Electric front fuselage.
See this RCGroups Circle Dancer thread
for useful build info.
|Circle Dancer 3000 FH Electric Specifications|
||957 sq in
|Flying weight from
||7.3 oz/sq ft
|Centre of Gravity
||100 - 110 mm from wing leading edge
||Rudder, elevator, ailerons, flap, motor
|Circle Dancer 3000 FH Electric Typical Weights|
|Rudder & elevator servos
|Prop & spinner
|Circle Dancer 3000 FH Control Movements|
||40 mm each way
||80 degrees down
||17 mm up, 12 mm down
||15 mm up, 15 mm down
||21 mm from the trailing edge to fuse top
||flap 3.5 mm down, aileron 3 mm down
||flap 1.3 mm up, aileron 1 mm up
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