Thursday, January 11, 2007
Vik's polymer pump configuration works...
I again used pliers to rotate the threaded rod. This configuration seems to require less torque that the previous experiment.
I am observing the tendency of this polymer pump to slowly rotate the 3 mm filament. It appears to complete a rotation every 1-1/2 inches. This is the same slippage that Vik Olivier has documented with his Mk II.
Most of the energy used in this pump seems to be employed cutting the threads into the filament. I tried to attach my electric screwdriver to the threaded rod with little success. My electric drill, on the other hand, proved far more of a success. Here you can see polypropylene filament being pumped. Please pardon the blurriness. I had to operate the drill with my right hand and the digital camera with my left. Sadly, my son has gone off to university again, so I'm down to two hands again.
Links to this post: