8. Vacuum pump
Here is the manufacture, part number and specs. I purchased this unit from www.metricmind.com. Check out his site for the current price.
This is a quiet little unit that runs only when there is some use of the hydraulic/friction brakes, which will be less often now because of the regenerative braking ability. Speaking of regen braking, not only will that make the brake pads last longer, there is no wear mechanism involved with recovering the power from braking.
Because of its infrequent use, very little power is consumed by this pump.
July 2008 update:
Vacuum pump is now mounted.
This turned out to be a very simple and robust mount and nicely snuggles with the Air Conditioning compressor.
Both of these pumps are rubber isolated to minimize vibration. By placing them on this chassis stiffener (or "skid" plate) which is anchored to rigid tie points on the chassis, it will minimize the possibility of vibration transferred to the cabin. After all, now without noise from a gas engine, the lower level sound sources and vibrations will become more noticeable. Thus the planning for that effect.
Note how the vacuum pump feet lined up with existing features in the stiffener/skid plate. Luck happens... The stainless bolts thread into captive PEM nuts that I mounted inside the aluminum support tube, from above and below.
Aug 2008 update:
Final vacuum pump location:
Next step: install vacuum hose up to brake reservoir
