70% SCALE-DOWN OF X-250
| At first look you might not tell this from an X250. That's because it's nearly an exact scale down from the X250 plans. This project was inspired by having some smaller carbon fiber tubes on hand for the wing spars and a surplus of 280 size motors. It's scratch built and only cost about $10 for everything except radio and motor. At first I flew it with a direct drive Speed 280. It flew but it was underpowered. Now it goes great with a geared 280BB |
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This plane is a blast to fly! Its really tiny but flies fast! It has great aerobatic capabilities and is very responsive. Because of the small size it gives the illusion of flying faster so its easy to try to fly too slow and stall it. It will ROG from a hard surface in about 30-40 feet. It will loop from level flight but you need to let it reach speed first. I think a different prop chosen for thrust rather than speed will help, but I just used what I had. Also the diameter is limited to about 7 inches for ground clearance if taking off from ground. |
| Wing Span | 26 Inches |
| Length | 19 Inches |
| Wing area | 145 Square Inches |
| All-Up Weight | 12.0 Ounces |
| Wing Loading | 12 oz/sqft |
| Motor, Gearbox | Permax 280BB, Horst 4:1 with bronze bushing |
| Propeller | 7x7 Graupner Speed Prop |
| Battery | 8cells Energizer AAA NiMH 700mAH |
| Controls | 4 Channel: Rudder, Aileron, Elevator, Throttle |
| R/C equipment | Hitec Feather Receiver, 3 CS10BB Servos, FMA Mini 20 ESC |
| Covering Material | Oracover silver, yellow transparent Ultracoat Lite |
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