16" aft of Leading Edge.
Derived from plans, DWG 9 - 1/4 scale - zoomed to 800% and measured; checked against known measurement on plans.
16" aft of Leading Edge.
Derived from plans, DWG 9 - 1/4 scale - zoomed to 800% and measured; checked against known measurement on plans.
Thanks, dug out my drawings. 4.125 x 4 = 16.5"
Mel, he was referring to drawing #9. Saved me the trouble is going through all of them.
I am what-iffing changing out from a PC680 battery to a ETX900. 10 pounds off the firewall (13" in front of the leading edge). My raw W&B numbers were taken on jack stands at the tie down.
I did the same on my -7, swapped out the PC680 & steel box and installed a ETX900 + BBMU.
I went through the math and figured the C.G. moved aft a little bit (read: ~1")
I wasn't worried about the CG limits, due to the fact that my weight varies by at least 10 lbs during the course of a year