X-Mozilla-Keys:                                                                                 
Jeff Spitzer wrote:

At 04:15 PM 8/12/99 -0700, you wrote:

BTW Jeff what is the best way to check for water pump
cavitation?

Would a clear section of hose near the pump and a video
camera work?

How about a microphone near the pump?

Perhaps just powering the pump at max RPM with an external
motor for testing purposes?

I would have to ask PY how the racer guys know about cavitation in the
pumps.  There's no guarantee that you'll see anything in a clear line
'cause the bubbles *can* collapse quite quickly.  Sound would tip you off
but not unless everything else was pretty quiet.  Best way is to notice a
disproportionate gain in flow with increasing RPM or drop in flow with
slight restriction on inlet.

Jeff Spitzer

Looks like some sort of flow meter is called for, for trouble shooting
problems. I have heard rumors that the pump won't work over 5000 RPM
if certain hose connections are not made and or the pump housing is 
modified in some way.

Paul Lamar
 
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