The latest development of the Greenley range of sport and tug models is the Ampley, so called as it uses “amps” and is “amply powered”.
The model is a 80% scale version of the SD Greenley. Construction is exactly the same as the other Greenley models with a fuz made of 1/32” ply and an option of foam or built up wings.
For towing the model uses an E-flight 160 electric motor turning a 20 x 10 prop and drawing 60 amps. Speed controller is a Jeti Spin 77 and the batteries are 2 x 5s 5000mha Lipo’s in a 10s set up.
This power train gives the Ampley the same towing performance as an SD Greenley with a piped Zenoah 62 and will get a 12 kg glider to 1000 ft in 1 minute. For sport flying this set up will fly the model for 25 mins + but for towing at full power it will make 5 tows of 1 minute each.
Free plans of this model are available to download