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Designed by David Theunissen. I built this from free plans which I downloaded from the Fly Electric website
Mine worked out about 52" wingspan ( a bit smaller than the standard plan size) and weighs 1140g (843 g less battery). I've made several modifications such as a better-looking outline to tail surfaces, bigger ailerons, etc.
Powered by AXI 2820/10 outrunner swinging an APC 11x 7 prop, with a 3-cell 3650 LiPoly and a Hyperion Titan 50A ESC. Lightly loaded but aerobatic with a good speed range and pleasant handling characteristics. I get at least two 9 minute flights from a single charge.
I'm using a Spektrum DX7 radio which has worked well for me so far. Spread spectrum rules.
48 inch span electric aerobatic sportster designed by Al Eastman. The plan
is no longer available for free download, but he has a smaller design called
the Ampmeister - order plans from Al's
website. Originally powered by a Mega 22-20-4 brushless swinging an 11 x
7 prop via a gearbox. Was using 10 x 1700 CP cells but flight duration was a
bit short at 5-6 minutes. Have now switched to a 3-cell 3650 Tanic LiPo pack,
which has greatly improved flight duration.
A mid-air collision at the flying field caused major damage to fuselage so I
took the opportunity to lengthen the nose to correct a slight tail-heavy condition.
Now re-engined with a Hyperion outrunner, and a stronger U/C as the old one
kept bending under my bumpy landings.
A 10-cell F5B machine built in the Czech Republic by Valenta Model. Robbe Keller brushed motor, 11.5 x 7 prop, 10x 2000 cells. Fast and smooth. Only flown once by me in competition, but it's great as a "hotliner". Parabola thermals well; I had a 20 minute flight recently. Both ailerons pop up at 45 degrees to act as a speedbrake for landing.
Hatchet designed by Nick Froude (NZ). Speed 400 powered with a KAN 1050 NiMh 7 cell from Watts Up Hobbies. Stacked this after radio failure, awaiting repairs. It flew well though.
Zagstik designed by Joe Colletti (USA), a Zagi style wing built using Ellipstik construction methods (all balsa strip construction). Basic flat-bottom aerofoil. Battery lives under wind in a pod. 6V 400 with Kontronik Rondo controller, 7 x 600 AE cells, Gunther prop. Flight times vary from 3 to 6 minutes depending on throttle. Rather fragile (it won't bounce) but great performance. Less span and more sweepback than a Zagi.
These were both built from Ben Buckle kits. The Junior 60 (my first electric model) is powered by a belt-drive Speed 600 swinging an 11" prop and the Hepcat has a geared 400 with a 9 x 6 prop on 7 x 600AE cells. Both have been modified with larger control surfaces than shown on the plan, and with lifting section tailplanes. Both will ROG off short grass, good park fliers if winds are light.
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