Quote:
Originally Posted by G-CPTN
The DDAD engine is, of course, a two-stroke, and will 'happily' run backwards as well as forwards (for example if you muff-up a hill-start).
Be warned that once this happens it will not respond to the throttle-pedal, and, unless you 'pull the emergency' flap (which places a plate over the inlet) it will 'smoke' as it starts to consume the sump-oil and engine speed will increase until the engine overspeeds and destroys itself (and, possibly, you).
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I've heard about them running away on the sump oil but not running backwards. Surely a flap on the inlet would be no help either in this situation because the inlet is now the exhaust?