XK A700A Sky Dancer

10 November 2016

Ouch! I drove the car over Sky Dancer last Sunday, my fault because I have no one to blame it on.

13 September 2016

Purchases on Sunday 11 September 2016. XK Sky Dancer, 3mm aluminium tubing, chuck glider.

Rotor brought in Mode 2, no camera no LED (designation A700B and A700C). I prefer mode 1, but mode 2 is fine with me for this glider.

Good for WLToys conversion?

Remove the canopy and ballbearing weight. Gouge the nose for battery space. Hotglue a WLToys receiver to the nose, over the battery space. Run wires through tubing or wire hoops along the fuselage to the rear and connect to hinged tail surfaces. Or maybe a single aileron.
Insert a power pod through the top and through the wing for a powered glider.

S-FHSS (Futaba) transmitter that came with the Sky Dancer.

 The LCD displayed 'L', the servos moved only a little bit. Spent quite some time trawling for information on how to increased the servo throw at the X-4 transmitter. The left gimbal can be depressed and this will alternate the dual rates from "L" to "H" and vice versa.

The Sky Dancer came with a 2S 300 mah battery. Rotor didn't have spares yet. Size of battery is about the same width as the 1S cell I have for the V979.

 This is the series adapter I made up to use 2 V979 cells.

I didn't crash, but the propeller went off-center on the second launch (same battery) after I set the mechanical trims. It was fiddly to push the propeller so that it stays relatively true to the axis. When I got it about right, I launched the third time and while flying, the propeller came off mid-flight. I managed to pick up the whole propeller assembly from the field.

The model can glide but it is not a floater. The glide ratio isn't too good. I thought a 2S brushed motor would be powerful but it wasn't so, perhaps it is because of the folding prop.

Daniel said I should use epoxy and not Loctite to glue the propeller to the motor shaft. Kasim said Loctite is fine as it won't attack the plastic. I used Loctite and as I tried to spin the propeller true to the axis, it broke off.

I found a propeller adapter that takes a 4 or 4.5" diameter prop (about the same as the broken propeller but much more blade area), but if I throttle all the way up, the motor cuts and I have to bring the throttle down to reset before I can apply throttle again. Maybe there's some sort of cut-off device at the brushed motor to prevent drawing too much current.

Banggood sells the folding propeller assembly, so an order was placed.