For Testing where your RC planes current CG is (compare with recommended CG).
3- point CG Calculator Example (prop nose-wheel)
Datum (red) leading edge wing root
Dist. From Datum (in) Weight (oz) Moment
Point-1 (nose wheel) in-oz
Point-2 (Left Main) in-oz
Point-3 (Right Main) in-oz
Totals:
inches current CG from datum inches
Notes:
* level plane before taking weight measurements
* select an easy datum point (may depend on plane) I used the leading edge at the wing root.
* enter negative inches to the left or forward of the datum and postive to the right in these examples.
3- point CG Calculator Example (prop tail wheel)
Datum (red) leading edge lower wing
Dist. From Datum (in) Weight (oz) Moment
Point-1 (tail wheel) in-oz
Point-2 (Left Main) in-oz
Point-3 (Right Main) in-oz
Totals:
inches current CG from datum inches
Other Notes:
* sorry no guarantee on the acuracy of this web page.
Information collected from:
* Vans club meeting CG presentation 4/9/2014
* FAA handbook (click here)
* Aircraft Super Calc
* Team Flying Circus blog