You might want to take a look at this web link... http://www.safetydata.com/manual/poeg11.htm
Here is an excerpt from it.


4. What effect does a forward center of gravity have on an aircraft's flight characteristics?

Higher stall speed - stalling angle of attack is reached at a higher speed due to increased wing loading.

Slower cruise speed - increased drag; greater angle of attack is required to maintain altitude.

More stable - the center of gravity is farther forward from the center of pressure which increases longitudinal stability.

Greater back elevator pressure required - longer takeoff roll; higher approach speeds and problems with landing flare.

5. What effect does a rearward center of gravity have on an aircraft's flight characteristics?

Lower stall speed - less wing loading.

Higher cruise speed - reduced drag; smaller angle of attack is required to maintain altitude.

Less stable - stall and spin recovery more difficult; the center of gravity is closer to the center of pressure, causing longitudinal instability.