Brief Description: How much lead for Elevator Counterweights
Started trying to determine how much lead is needed for the elevator counterweights. I decided to test balance the elevators while everthing is hooked up and installed. Used Russ Erb's calculation for fabric - 1 lb at 7.5" aft of hinge CL. I used open end wrenches that were combined to achieve the 1 lb target. First tried 2.6 lb weight on each elevator - not enough. Tried 3.1 lb each side and looks right (6.156 total)
I had searched extensively for the amount of weight used by other builders or even for a recommended starting point. It is not a number that is shared and for good reason I guess. Each fabrication of the tail is different and the weight needed is particular to that set of components and installation.
Just as a check, I figured the the volume of cubic inches needed and came up with the same area specified on the plans. So figure I'm in the ballpark.
Measured all outboard hinges for later reference and proper location for painting. All dimensions from outboard T-25 rib. Right Elevator = 1 3/16" & 2 31/32" Rudder = 5/16" & 2 3/32" Left Elevator = 1 3/16" and 2 15/16"
