The only ringed piston, "flat four" R/C engine available
- Twin opposing cylinder self dampens most vibration smooths operation for longer engine and airframe life and minimizes vibration related damage to radio gear
- Features pushrod overhead valves, seven ball bearings, propeller locknut assembly and firewall mount
| Displacement | Output | Weight | Muffler |
| 0.809 x 4 (53 cc) | 4.1 @ 8,000 | 77.3 oz | Yes |
| RPM | Bore | Stroke | Recommended Propeller Sizes |
| 1,800-8,500 | 27.7mm | 22mm | 2 Blade: 18x10, 18x11, 18x12, 18x13, 18x14 20x8, 20x9, 20x10, 22x8 |
| Displacement | Output | Weight | Muffler |
| 0.809 x 4 (53 cc) | 4.1 @ 8,000 | 77.3 oz | Yes |
| RPM | Bore | Stroke | Recommended Propeller Sizes |
| 1,800-8,500 | 27.7mm | 22mm | 2 Blade: 18x10, 18x11, 18x12, 18x13, 18x14 20x8, 20x9, 20x10, 22x8 |
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The best service and prices, with the largest inventory & fastest shipping. Serving aircaft owners, pilots & RC modellers for 30 years. |
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Grants Pass Airport Deland Airport | |
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Chief's Secure Ordering
| Online Orders: | Our Site is Secure! |
| Aircraft / Avionics Orders: | (800) 447-3408 |
| Radio Control Orders: | (877) 219-4489 |
| 24 Hour Fax: | (541) 479-4431 |
Chief's Customer Service
Customer Service: (800) 447-3408