| 21. | The saddle was pulled up and the footrests folded out ready to push start the two stroke engine and ride into action.
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| 22. | Enslow was riding a customized Service Honda, which is basically a Honda 250 dirt bike with a 500cc two stroke engine.
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| 23. | The standard engine is the Rotax 503 two stroke engine or Rotax 377, with a Volkswagen air-cooled engine optional.
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| 24. | Three piston rings suggest that it is a four stroke engine while two piston rings suggest that it is a two stroke engine.
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| 25. | Purely turbocharged two stroke engines may thus have difficulty when starting, with poor combustion and dirty exhausts, possibly even four-stroking.
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| 26. | The four stroke engine is more efficient when running at full throttle, while the opposite is the case for the two stroke engine.
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| 27. | The standard engine is the Hirth F-30 two stroke engine, with a Volkswagen air-cooled engine with reduction drive optional.
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| 28. | Some 49 cc two stroke engines were built under licence from Puch, and fitted into the innovative Falco, one or two seat moped.
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| 29. | The "'Coronet "'was a three-wheeled microcar with a rear-mounted Excelsior two cylinder, two stroke engine.
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| 30. | The "'Powerdrive "'was a three-wheeled microcar with a rear-mounted Anzani two cylinder, two stroke engine.
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