Originally Posted By: snrub
That is interesting John F. That is a greater difference than I would have imagined.

There could be some difference in impeller design too I suppose.


I deal with aircraft quality pumps on a daily basis. I suspect you're correct Snrub, in that the HF and Honda pumps have significant differences in efficiency. Impeller design, manufacturing tolerances on components keeping leakage to a minimum, etc., all add up to dollars. A bigger motor can't compensate for a low efficiency pump. It is not unusual for aircraft dimensional requirements to be held within .0002 of an inch...but they cost a whole bunch more!

Last edited by Bill D.; 05/04/17 08:48 PM.
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