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I modified a 2" Jacuzzi 'sludge pump' that
was originally powered by a burned up Briggs & Stratton 3 HP at 3600 rpm
engine to work off a deck motor. The B & S based pump was rated 100
gal/min at 5' lift and 120 gal/min at 0' lift and no back pressure. I did
it to de-water for a swimming pool dig. The deck motor is 3/4 to 1 hp at
3000 rpm (depending on who you talk to). It took some machining to fit the
motor to the pump. I ran the thing for 4 hours and it cycled on the
thermal breaker as the torque load was too high for continuous duty. The
duty cycle was on 60 seconds, off 75 seconds, and I stopped because I didn't
trust the thermal breaker if I wasn't there. I was pumping about 10' lift
and well over 50 gal/min out of a very long 2" stainless point, but it
did work. It was eerily quiet as the discharge was 50' away. I put a
nozzle on it briefly, and it was easy to drive a 1" stream 40' or more. I
put a 3.5 hp Tecumseh engine in it's place and let it run for 2
weeks.
Larry Elie
-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu [mailto:elec-trak-bounces cosmos phy tufts edu]On Behalf Of Thomas Pattee Sent: Tuesday, April 26, 2005 12:10 AM To: elec-trak-tufts-admin Subject: (ET) True motor output Anyone know what the true output for the new and old ETs are? I've
seen the power curves, but am trying to figure out how the motors
accurately compare to others I've found on ebay.
I'm trying to find a way to run irrigation pumps using DC motors, and
am trying to find some PM motors in the 2-5 HP range. Most of the motors I
find in that range have power curves similar to the E15, E20, and snowblower
motor curves, which makes me think that they aren't 12-, 15-, or 20-HP
equivalent motors (even with the elect HP = 2X gas HP).
Any thoughts?
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