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Old 09-27-2010, 05:33 PM
  #14  
cutaway
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Default RE: Got my LT-40 completed

Unless you want a hot-rod, go with a 4" or 5" pitch prop probably between 10 1/2" and 11" in diameter. Diameter the engine can turn without overheating, misbehaving, crappy idle/etc will be significantly affected by variables like blade width and general blade design.

ex. a 9x8 pylon racing prop loads an engine much less than a Rev-Up 9x8 "W" wide blade.