What kind of drill press? Does it already have a pulley arrangement
to change speeds? A smaller motor pulley, and/or a bigger quill
pulley. And there is also replacing the motor with a slower model.
You generally only have two choices, 1725 and 3450 RPM.
What WON'T work - a light dimmer.
Yeah the dining room light dimmer, let's rip it out and put it on the motor!
Sounds like it could be advice from Mad magazine.
It is a cheapy Chinese mini DP, $40 at the Homier traveling tool show. Something like
4 1/2" center-to-column and with a 4 speed set of pulleys on top. Very standard and
end, can't lock the quill in place. The motor is 1700 rpm (not 1725). Works well but
lowest speed has this tacky chafing sound first time I ran it, so, must be some
I imagine one could place a larger single gulley wheel on the front spindle, or
like that...? I know a variable speed DC motor and control board would be really
after all the searching I've done.
"I know", but I am poorer than that, sorry to say, health conditions. The one I want
is a larger benchtop type, 12 speeds and 14" swing if that is 7" center to column.
As Norman suggested, the Grizz G7943 is the idea, and other generic Asian ones
are the same. The Grizz gets down to 140rpm, pretty cool!
Larger pulley on the front, smaller on the motor. If you want to have fun
you could play with a couple of variable-pitch pulleys, but then you would
have to set up some means of monitoring the RPM.
Best bet if you're in the US would be to get thee to Lowes before all the
closeout Deltas are gone.
Reply to jclarke at ae tee tee global dot net
Speed comes from the number of windings and the clock at the electric
company, regardless of the nameplate.
Dumb question, but are the pulley cones installed properly? Other than
that, check to see if you can get a cone with larger diameters for the
Broadly so, but the difference between 1700 and 1725 is down to motor
design. A motor that runs at significantly less than this theoretical
limit is likely to be less efficient, run hotter, fail sooner, and be
cheaper to buy.
(The term your search should be looking for is "slip")
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