<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Inch, <div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>If it’s a DC (universal) motor, you should be able to drive it with AC through a Variac (DC motors work on AC). I have one that’s set up for 220v, but it will likely need to be rehoused.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Are you back in NJ now? Maybe we can get together soon and play with the Variac and motor.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Thanks,</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Tim</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""> <br class=""><div><blockquote type="cite" class=""><div class="">On Dec 11, 2017, at 4:58 AM, <a href="mailto:eric@megageek.com" class="">eric@megageek.com</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><font size="2" face="sans-serif" class="">Actually, I have a treadmill motor. But
how do I slow that down? (I don't have any of the treadmill.)</font>
<br class="">
<br class=""><font size="2" face="sans-serif" class="">I can get another one if I need the
whole thing.</font>
<br class=""><font size="2" face="sans-serif" class=""><br class="">
Thanks!</font>
<br class=""><font size="2" face="sans-serif" class=""><br class="">
<br class="">
Sent from my Commodore 64 on a 2400 Baud Modem.<br class="">
Tech Viper<br class="">
"Be as beneficent as the sun or the sea, but if your rights as a rational
being are trenched on, die on the first inch of your territory." Ralph
Waldo Emerson </font>
<br class="">
<br class="">
<br class="">
<br class=""><font size="1" color="#5f5f5f" face="sans-serif" class="">From:
</font><font size="1" face="sans-serif" class="">"Randall"
<<a href="mailto:TR3driver@ca.rr.com" class="">TR3driver@ca.rr.com</a>></font>
<br class=""><font size="1" color="#5f5f5f" face="sans-serif" class="">To:
</font><font size="1" face="sans-serif" class=""><<a href="mailto:eric@megageek.com" class="">eric@megageek.com</a>>,
<<a href="mailto:Shop-talk@autox.team.net" class="">Shop-talk@autox.team.net</a>></font>
<br class=""><font size="1" color="#5f5f5f" face="sans-serif" class="">Date:
</font><font size="1" face="sans-serif" class="">12/10/2017 21:28</font>
<br class=""><font size="1" color="#5f5f5f" face="sans-serif" class="">Subject:
</font><font size="1" face="sans-serif" class="">RE: [Shop-talk]
Need to find a speed controller for a 220v 1hp motor</font>
<br class="">
<hr noshade="" class="">
<br class="">
<br class="">
<br class=""><tt class=""><font size="2" class="">I think you're probably going to have to find a different
motor for it.<br class="">
<br class="">
Most single phase AC motors are simple induction motors, and they don't
like<br class="">
being slowed down much. You might be able to get 20 or perhaps even
30%<br class="">
without losing too much torque (or having the start switch close); but
for<br class="">
cutting metal on a woodcutting bandsaw, you're probably looking for more<br class="">
like 90% reduction.<br class="">
<br class="">
Another option might be to add a jack shaft and pulleys to step the speed<br class="">
down. ISTR several articles in HSM on that topic.<br class="">
<br class="">
As a side note, there are lots of tread mills (exercise machines) being<br class="">
thrown away with perfectly good 1 or 2 hp DC motors in them. Generally
it's<br class="">
the controller that fails, not the motor.<br class="">
<br class="">
-- Randall <br class="">
<br class="">
</font></tt>
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