Quote:
Originally Posted by Penguin  I recall a while back they were either proposing or marketing a hpa pumping system similar to a bicycle pump. The problem with the system was it require a lot of pumping and got very difficult near the end. Now if you made a long enough lever you may be onto something although it would be unwieldly. |
These pumps also become very hot during prolonged use, to the extant that it may have to stop and cool down as often as the operator does.