On Fri, 2 Dec 2011 09:57:08 -0800
"Steve B" wrote:

snip
Is it common for these to stop so quickly, or are the bearings needing lube,
or getting tight from gunge?

I think it depends a lot on what kind of wheels you have mounted and
size/mass of the armature. My 3/4 hp with two 8 x 1 inch wheels spins up
and down slow. Another maybe 1/2 hp motor with just an 8 inch wire wheel
spins up and down much quicker.

If you can spin it by hand freely with no noticeable noises I wouldn't
get too concerned.

--
Leon Fisk
Grand Rapids MI/Zone 5b
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