Paul,

   I had sort of an odd thought, and I'm not familiar enough with the
   the 13b to reason it out.  With a p-port engine, would it be
   possible to flip the rotor housings backwards and have the engine
   run in the opposite direction?

   Josh

   We have discussed this in the past and that is the first suggestion
   that might work. The tension bolt pattern would not match up but if
   you are building your own end housings that would not matter.

   Paul Lamar

 If you build your own end housings they could be designed so they are both
 including the bell housing pattern. That way they could be just turned around.
 For twins with reverse props, one engine turned around and a change to the
 PSRU if it has an internal oil pump. This way a dual supply of spare engines
 is eliminated.

 Dale Davies


Don't forget about all the accessories such as the starter and the water
pump.  They would not be happy running backwards.

 Mark LaPierre

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