One method I've ehard being used to determine the CG on a new plane is to replicate the plane in smaller scale with card stock or cardboard, and flight test the dummy model with different cg's then transfer this tot he real model for first flight, just to get it close in the range... this only works if you keep the small dummy model in scale and proportion with the larger one... the relative weights of the parts have to be the same.... RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.