RCU Forums - View Single Post - FORA / CYCLON .15 powered speed plane
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Old 03-17-2014, 09:53 AM
  #206  
aspeed
 
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The old A speed planes used a 6"-7" P prop before pipes came along, and 80% nitro was allowed. 30,000 rpm works out to 210 mph. Your results will vary fer sure. The newer motors like to rev more, there are no draggy lines...