I am helping a friend to finish his new Erwin XL medium elektro version.
PCM at is confirming in a mail that correct CG is located at 100 millimeters.
1) I've always seen the ballast tube located on the CG and not forward as in this case. If i add ballast the CG changes, or ?
2) is it possible that with motor, Esc and 3S Lipo to match the CG indicated by PCM hw has to add 140 grams near the motor in the nose?
Both these points seems to me not clear. point 1) is probably my lack of knowledge and point 2) ??
There is also NO space to add such an amount of weight in the motor area, fuselage is very thin !
Help me to understand and ...my friend to enjoy his new model.
(photo of the wing with ballast tube in the left -steel bar- and wing joiner tube in the right - carbon rod)
Thanks
PCM at is confirming in a mail that correct CG is located at 100 millimeters.
1) I've always seen the ballast tube located on the CG and not forward as in this case. If i add ballast the CG changes, or ?
2) is it possible that with motor, Esc and 3S Lipo to match the CG indicated by PCM hw has to add 140 grams near the motor in the nose?
Both these points seems to me not clear. point 1) is probably my lack of knowledge and point 2) ??
There is also NO space to add such an amount of weight in the motor area, fuselage is very thin !
Help me to understand and ...my friend to enjoy his new model.
(photo of the wing with ballast tube in the left -steel bar- and wing joiner tube in the right - carbon rod)
Thanks