Posted by RobinBennett |
Jan 10, 2010 @ 06:56 AM | 8,370 Views
Here in the south of the UK, we don't often get enough snow to try flying from skis, so when the forcast said the snow was going to stay for the weekend I made some from scraps of polycarbonate and wood for my BladeXL.
Here's my conversion of the Multiplex Fox - I cut the fuselage in half and replaced the rear half with a couple of bamboo skewers and some balsa fins. There's an AR6100 buried just under the leading edge of the wing, the ailerons are controlled by torque rods and the elevator by a servo in the wing with a long push-rod. The motor is a small brushless I bought for indoor 3D a couple of years ago with a 5x4.3 (instead of the 6x3 that it uses for 3D). AUW with a 2s 400mAh battery is 95g but it has also flown with a 2s800 at 120g.
I've wanted one of these for years but recently had a chance to try one, which made up my mind (that, plus the cheap motors, ESCs and batteries at HobbyCity). The new graphics are a big improvement over the old random squares too.
I spent most of the winter planning a plane for windy days and came up with this. It's inspired by a club-mate who electrified a slope plane, and a free plan from RCM&E (which also donated the name).
I'd always liked flying wings for windy weather, but this design should have the following advantages:
* A thinner, higher aspect ratio wing for speed,
* More separation between the motor and the wing, to reduce the noise.
* More protection for the battery
* Better pitch stability, for trim-free inverted flight.
* 3 servos, so I can mix flaps and spoilers/airbrakes.
It has a 50" span, and weighs only 500g - with 200W it should be quite quick but still easy to land. There's plenty of room for a second battery if I ever need more power.