|Circle Dancer 3000 RES Glider Specifications|
|Wing span||3.0 m||116 in|
|Wing area||61.2 dm2||949 sq in|
|Length||169 cm||66.5 in|
|Flying weight from||1060 g||37.4 oz|
|Wing loading||17.3 g/dm2||5.7 oz/sq ft|
|Centre of Gravity||100 - 110 mm from wing leading edge|
|Controls||Rudder, elevator, spoiler, motor|
|Circle Dancer 3000 RES Glider Typical Weights|
|Fuselage||273 g||9.6 oz|
|Centre panel||237 g||8.4 oz|
|Wing tips||226 g||8.0 oz|
|Tailplane||32 g||1.1 oz|
|Rudder||18 g||0.6 oz|
|Accessories||60 g||2.1 oz|
|Total structure||846 g||29.8 oz|
|Glue etc||3 g||0.1 oz|
|Wiring||16 g||0.6 oz|
|Receiver||15 g||0.5 oz|
|Rudder & elevator servos||20 g||0.7 oz|
|Spoiler servo||10 g||0.4 oz|
|Battery||150 g||5.3 oz|
|Nose weight||160 g||5.6 oz|
|Flying weight||1060 g||37.4 oz|
|Circle Dancer 3000 RES Recommended Servos|
|Elevator & rudder||MKS DS6100, MKS HV6100, KST DS145MG, Blue Bird BMS-105HV, Corona DS843MG, Hyperion DS09-AMD, KST DS113MG|
|Spoiler||MKS DS6100, MKS HV6100, Blue Bird BMS-105HV, KST DS113MG, KST DS135|
|Circle Dancer 3000 RES Control Movements|
|Rudder||60 mm each way|
|Elevator||15 mm up, 15 mm down|
|Elevator neutral||21 mm from the trailing edge to fuse top|
|Spoiler||75º up deflection|
Review by: Brian Rivas
This is a lot of very beautiful glider for the money. All components were well protected with bubblewrap and suspended inside a sturdy box - yet another example of Neil's outstanding care and service.
For the last ten years I have been flying DLGs from my small field at the end of the garden - all from the Vladimir stable, including three Snipes. Until recently I had never considered anything beyond a 1.5m span, as this field has a number of trees around the perimeter as well as power lines crossing diagonally. However, I recently ventured to 2m with a Pulsar 2 and a MadRES. These felt huge at first and the trees seemed nearer, but I soon got used to the larger gliders without any disasters, and the field is big enough to get a reasonable height from a hi-start launch. Then, of course, my thoughts turned to a 3m wingspan: surely this would not be practical? I didn't want to spend a huge amount in case it all came to nought, and that is how I decided to try the Circle Dancer.
The build quality and finish are excellent, and this sailplane represents terrific value. Being a completely open structure with only a balsa leading edge and no carbon D-box, the wing looks a little flimsy, but in fact it is much stronger than it appears, although winch launches might result in something spectacularly horrible. Everything has been pared down for minimum weight commensurate with sufficient strength for normal thermalling. For example, all the wing ribs have had as much balsa removed as possible without compromising rigidity.
As this is a simple RES sailplane, the only work required is installing the servos, and there is plenty of space to do so.I did have a bit of an issue with the spoiler and in the end abandoned the horn and short pushrod system shown in the full-size diagram provided by the designer and instead simply used a long servo arm acting directly onto the underside of the spoiler. Two pairs of 5mm magnets not quite making contact were enough to keep it closed. The trailing edge of the spoiler does not sit quite flush with the wing surface - almost, but not quite. This is not a design or construction fault, rather it's just balsa being balsa. I might make up a balsa-ply laminate replacement.
When the time came for the Dancer's maiden on a cold November morning, I was nervous: conditions weren't ideal with a very light breeze diagonal to the launch line. Would the hi-start be strong enough to haul this heavier machine into the sky? Would she be responsive enough to manoeuvre in such a small field? I need not have worried: she went higher than I expected, and once up there just seemed to want to stay there. What a lovely sight she was, smooth and graceful and just itching to find a thermal. I was reminded of the last time I had a big sailplane, the Clean Machine back in the late 1970s, which I built from a plan (anyone remember that one?)
As for the Dancer's responsiveness, she reacted instantly to rudder input and proved capable of smooth and tight turns. The spoiler was very effective and I was able to make precise landings. All we need now are some decent thermals - but we may have to wait, judging by the current spell of unsettled weather.
I couldn't be more delighted with my first choice of 3m sailplane. With its excellent design, workmanship, and value for money I am looking forward to many happy hours of thermalling with the Somerset buzzards.
Review by: Alex EremenkoCircle Dancer 3000 RES Glider
I've got Circle Dancer 3000 RES plane from Hyperflight as an optional entry into "woody" contests. Usually, I am flying high end open, RES, ALES planes. So, the following is my feedback for Circle Dancer 3000 RES plane:
- Hyperflight did an excellent job of the packing and shipment. Plane arrived to California quickly and safe.
- Airframe quality and finish are very good. No complains here.
- I've made some modifications during assembly process. I've replaced push roads by carbon push roads. Replaced steel tips joiners by titanium. Used both of them at the initial flights. Better dynamics with Ti joiners. Modified spoiler actuation by using pin on the servo arm and slot on the spoiler. Installed spoiler servo in the frame for easy servicing if required. Added supporting pin for the rudder at the bottom of the fuselage. Added Vladimir's tow hook (no tow hook provided with the kit)
- Shortened all four plastic mounting bolts.
One note - if I will assemble this plane again, I would change stab control horn to a straight one. Would help with stab at-the-field assembly process.
Also, bolted wing and stab interfaces could be improved in structural and aerodynamics aspects.
Plane ended up very light. Thermals well. Almost as a HGL.
What I wish to have is more strong tips to center panel interface. It will be good to know if builder wrapped tube spare at the joiners interfaces (cannot see that, hidden by shear webs). Plane is very sensitive to tow loads, cannot take any error in applied launch loads. Launch is challenging and week aspect of this plane.
Other then that very good soaring machine.
Review by: Brian OxmanCircle Dancer glider
I chose this model because I wanted to get back to basics and have a pure glider for bungee launch in search of thermals. Apart from some transport damage due to inadequate packaging by manufacturer which was suitable resolved by Hyperflight the model was very impressive. It went together well and with simple rudder elevator set up it's quick and easy to set up at field. The only downside of this model is the fin which is a little frail as it is so would recommend carving a foam infill. As far as flying is concerned it is very sensitive to the slightest bit lift and can float around from bungee height without loosing height for some time. Still waiting for good thermal weather.