Quote:
Originally posted by bigben2k
What mostly concerns me is why you believe that this vibration comes from the pump's impeller.
I believe it to be more likely that the vibration comes from an unbalanced impeller. Did you modify it in any way? Is your rig very restrictive?
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Maybe it is vibration traveling down the tubing itself. I would have thought the tubing would dampen the vibration significantly but it is thick walled Tygon.
I can feel the vibration in the reservoir with only a pump>1/2"tubing>reservoir>3/4"tubing>pump loop. I'd say that's not very restrictive.
I haven't modified the impeller. Is it really practical to do so?