As for as I know, Ampico A pumps used 6-pole induction motors.
They run close to 1200 rpm with no load, and about 1125 to 1150
under load (assuming 60 Hz power as used in the USA).
Regards,
John Wolbach
(Message sent Fri 4 Dec 2015, 13:39:21 GMT, from time zone GMT-0500.)
