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ENGINE CLINIC

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PHOTOS BY PETE HALL Need a Powerplant Checkup? The Doctor Is In! EDITORS' NOTE: Renowned engine expert and longtime RCM columnist Clarence Lee shares his powerplant expertise this month, and we welcome him to the honor roll of Model Airplane News contributors. MYSTERY ENGINE Q: Quite a few years back, I was given an engine that I have identified as an HB .40 PDP 2-stroke. On opening the engine, I was able to verify the...

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