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Old 04-19-2010, 11:44 PM
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Default How big a problem is to much engine

I have an Easytiger TBF avenger which the sight recommends a 26cc gas. I live in Colorado Springs and our altitude is at 6500 ASL which most engines will run about 20% less efficient than at sea level so bigger is always good and sometimes a must. I came across a good deal and purchased a 3W CS 75cc gas engine that weighs 98 ounces with Pitts muffler and ignition. Don’t know max weight yet for meeting the CG on the Avenger but I’m sure that the 98 ounces will make the plane quit nose heavy. The plane has an 81" wingspan weighing around 14 pounds. How will this affect the flight performance if I have to actually add weight to the tail increasing the planes over all weight? Power wouldn’t be an issue as much as the wing area having enough lift for the weight I would think. I’ve already sent this question to Curtis over at easytiger and hope to hear from him tomorrow but I thought I would post it here for any open suggestions.

Link to easytiger TBF Avenger ;