Already sent this once but didnt show up, has anyone tried using hydraulics for operating retracts instead of compressed air bottles? it would be quite easy to do using clinical syringes and a small motor drive with micro limit switch's. A small motor working a rack and pinion to operate the master cylinder which connects to two rams on the u/c legs all made from polypropylene syringes would be light and practically maintanance free with no need for air bottles or recharging, have a drawer full of syringes of different sizes which I use for glue and oil etc so may play around with the idea, the long thin 1ml syringes would make excellent rams strengthened with thin wall brass tube on the outside,
regards, Terry