Electric retracts are proving less reliable than air...so it was decided to stick with that. But the prototype before this one we put Behotec C-36-2 units in, so a range of gear will work. Only thing is main legs are quite short (107mm) and as yet they are not listed as a spare.they use sockets, not pins. This supplied gear holds air for a week and I get two flights to a fill easily, as twin tanks give good volume.
Dw