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Motors for sync operation.
Original poster: Bigggcoil-at-aol-dot-com
Lot's of talk about sync. motors lately. Motors for sync. conversion
are cheap and
plenty. Check http//hometown.aol-dot-com/megaelectronvolt/page6.htm
There you will find my latest sync. conversion. It is a $24.00 Harbor
Frieght waterpump rated at 1/2 HP ( they say) but really is more like 1/4
HP I imagine. Anyway pull the pump housing of the permanent split
capacitor induction motor and there you have a nice motor with ball
bearings, a TEFC motor at that (totaly enclosed fan over). The armature is
pulled out and 2 flats that are 1/3 the armature diameter are milled for a
perfect 3600 RPM sync motor. These pumps are regularly $35.00, but on sale
a lot of times for $25.00. I also use this pump for my pond and swimming
pool, a great, cheap pump/motor for the price.
Wal Mart sells cheap box fans and some contain 1750 RPM perminant split
capacitor motors that do modify well for 1800 RPM sync. They are not
internaly cooled however and need external air over cooling or short run
time. The motor manufacture is Lasco, look for a small box capacitor by the
motor under the fan blade. I bought a bunch last Summer for $14.00 each.
Cheap bench grinders also work well, the induction motor type as there
are some brush type bench grinders out there(older Sears). Salvage yards &
junk stores may have used induction motors, I find them everywhere for dirt
cheap, $4.00 to $5.00 and most are ball bearing. Add John Freau's
electronic phase control and presto, instant adjustable sync gap.
Coiling in Oklahoma