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Ryan ST |
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Ryan ST |
| Wingspan | 600mm (24") |
| Wing Loading | 27g/dm2 (8.8oz/sqft) |
| Flying Weight | 152g (5.4oz) |
| Motor | GWS LPS geared 5:1 |
| Propeller | GWS EP7060 |
| Speed Control | Kontronics Micro10 |
| Battery | 6 x GP27AAAM 270MAh NiMH (7.2V) |
| Receiver | GWS Pico 40MHz with Smart PPM Decoder |
| Servos | 2 x GWS Pico |
| Controls | Rudder, Elevator, Motor |
| Construction | Expanded Polystyrene Foam and Depron |
This model is a rubber-powered freeflight kit from Union Models, which I have converted to radio control. Originally I powered it with a MIG 180 motor and 5.3:1 gearbox, but it needed 8 cells and was too heavy. With the GWS power plant and 6 cells it is a bit lighter, but wing loading is still quite high so it has to fly fast. Even with plenty of power, it doesn't want to loop (but it does an excellent flick-roll!). I suspect this is due to a combination of high wing loading and too much flexing of the wingtips.