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Old 12-24-2006, 03:37 PM
  #19  
ArthurD
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Default RE: Fastest Engine
OS91FX needs more prop than a 12x6 or 4. With a APC 12X8 it will turn about 16,000 with excellent response. Any smaller and it will over rev. Get a muffler from Jett or Performance Specilalists. Jet is prettier, both give 1K to 1.5K more RPM.
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