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Re: [oletrucks] heater blower

To: "oletrucks" <oletrucks@autox.team.net>
Subject: Re: [oletrucks] heater blower
From: "Jim Nordwall" <jnord@fgi.net>
Date: Wed, 15 Nov 2000 22:44:11 -0600
Thanks for all of the feedback.  While at work today, I found a 200 watt 1
ohm adjustable resistor ( it came from a DC drive).  I put the resistor in
series with the blower. That slowed the speed down to what is reasonable.
The voltage drop across the blower was 4.5 volts with a one ohm resistor.  I
adjusted the resistor to give me 6 volts across the motor.  That required
the resistor to be set at six tenths of an ohm.  The current measured 8
amps.  What most of the vendors are selling is a 50 watt, one ohm resistor.
The required wattage is volts x amps = 6 x 8 = 48 watts.  Newark sells a 1
ohm 50 watts resistor with a heat sink for about $9.00.  Since I have the
adjustable resistor I intend to use it and have a hi and low speed for the

Jim Nordwall
50 3100
Jacksonville, Illinois

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