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Homemade Big-Block Powerhouse (220cc V4!)

Now here’s a great-sounding engine! Detlef Kunkel designed and done this four-cylinder, V-construction four-stroke with a delivery rebate of 1.7. The 220cc engine’s missile energy is 25hp max.
Intended for 110- to 130-pound RC indication planes, it spins an SEP 35×20 three-blade propeller during 3700 to 3800rpm. The 90-pound aircraft in a video was built privately for this engine testing, and a cowling has been distant for exam purposes. Thanks to RCScaleAirplanes for holding this video of this considerable powerplant in moody during a Oberhausen Warbird Meet in Germany progressing this month

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