WattFlyer RC Electric Flight Forums - Discuss radio control eflight - View Single Post - Reduce speed envelope of Great Planes RV4?
Old 12-16-2010, 10:59 PM
  #3  
syd123
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Join Date: Dec 2010
Posts: 23
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thanks JetPlaneFlyer. I very carefully checked and rechecked CG and it is smack dab in the middle of the range indicated on plans. ..If you think it will help, I can add just enough weight to the tail to move it to the very back edge of the range.

You mention a smaller diameter prop. ..What size exactly? All the 9" props I can find have greater pitch than 4.5. ..I've never quite understood whether diameter or pitch has a greater affect on thrust.

Lastly, Rimfire only recommends 3-cell lipos for this motor. ..Is there a risk in using a 2-cell instead?
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