Bob

Try this link, it seems to be a good caculator. http://www.geistware.com/rcmodeling/cg_super_calc.htm The length of the nose though doesn't seem to come into play as far as this caculator is concerened.

Another good site http://www.ae.uiuc.edu/m-selig/ Work your way around this site, there is more info here than you can imagine.

Don