http://www.YouTube.com/PCP AIR RIFLE HAND PUMP
Hope this works, cheap four uncles hand pump from Amazon $79.95, not sure how long it will last ,but have been filling both my DAR’s for about 3000 shots, no problem so far, takes about 10min to get from 1200psi to 3000psi. Rotates about 12rpm, does not over heat, can buy 4 or 5 hand pumps for the price of a nomad, maybe I should get a spare to keep on hand in case of a failure? Pumps do come with a O ring repair kit.
Built from parts that were on hand, gearbox came off a supermarket check out counter drive belt, was originally connected direct drive to 1725rpm motor , rpm had to be reduced with use of belt and pulley drive system.