OK, I`ve found the courage, I think, Stripped the SDC right down the C/Bs with pot switches, coil plug, H/Dphone plug complete as per image below weighs 216 grams. This section complete with a couple of 3.7v LiPos hard wired in with the Pro-Sonic  transmitter also hard wired, giving 3 Mini USB female plugs to charge .LiPos will be probably rectangular type that have their BMS in cooperated. Doubt I`ll used the SDC coil shaft as whilst it is quality feels heavy compared to say the GPX shaft.