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Author Topic: 1985 wood mizer Lt40  (Read 619 times)

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Offline Stefinney

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1985 wood mizer Lt40
« on: August 04, 2017, 06:32:17 pm »
My variable speed control has went out on 1985 Lt 40
looking for a replacement, if anyone has one left from upgrade, very interested.  Can't afford the upgrade at this time.  Thank you!

Offline Chuck White

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Re: 1985 wood mizer Lt40
« Reply #1 on: August 04, 2017, 07:34:06 pm »
Welcome to the Forestry Forum, Stefinney!
~Chuck~
Retired USAF (1989), Retired School Bus Driver (2012), and now a Mobile Sawyer
1995 Wood-Mizer LT40HDG2425 Kohler - Shingle & LapSider
Cooks Cat Claw Sharpener, 4-foot Logrite cant hook.
Basic mechanical skills are all that's required to maintain the Wood-Mizer.
I LOVE MY SAWMILL

Offline Wayniac

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Re: 1985 wood mizer Lt40
« Reply #2 on: August 06, 2017, 07:35:37 am »
if you are talking about the photometer under the knob you can get one at radio shack
wayniac

Offline Stefinney

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Re: 1985 wood mizer Lt40
« Reply #3 on: August 08, 2017, 07:49:41 pm »
The Powerfeed has went bad.  Woodmizer has an upgrade, but it's over 800 dollars.  Was hoping someone would have one from an upgrade I could possibly by at a reasonable rate.  The older models use a rheostat, if I could find one, that would be great

Offline Kbeitz

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Re: 1985 wood mizer Lt40
« Reply #4 on: August 08, 2017, 08:32:58 pm »
Lots of  rheostats on E-bay...
Collector and builder of many things.
I have a
machine shop
Wood work shop
And a Weld shop
And now a saw mill
and a bunch of new forum friends.

Offline Stefinney

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Re: 1985 wood mizer Lt40
« Reply #5 on: August 08, 2017, 08:54:44 pm »
Yes, ordered a couple,  fingers crossed we can get this thing working!

Offline MartyParsons

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Re: 1985 wood mizer Lt40
« Reply #6 on: August 10, 2017, 08:00:28 am »
Hello,
   The Very Early LT30 and LT40 mills had a complicated power feed system. I have only ever see a few of this design. The potentiometer ( rheostat) will not work on this design.
The early design had detents on the dial to control the speed and was variable but it was detented so if the next detent was to fast and the lower speed was slow there was nothing in between. It is a mass of copper and lowered the voltage to  the motor  by creating varying resistance and current to the power feed motor.

Here is something the same that was used back in the day.

http://www.italohm.com/lang_en/products/RTP_OFEL.php

Marty
A pessimist sees difficulty in every opportunity; an optimist sees opportunity in every difficulty. -Winston Churchill

Offline Kbeitz

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Re: 1985 wood mizer Lt40
« Reply #7 on: August 10, 2017, 08:44:13 am »
There is some big Ceramic RHEOSTATS on E-bay.   
2-3 OHMS, 15-8 MAX AMPS
Collector and builder of many things.
I have a
machine shop
Wood work shop
And a Weld shop
And now a saw mill
and a bunch of new forum friends.

Offline Stefinney

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Re: 1985 wood mizer Lt40
« Reply #8 on: August 11, 2017, 08:10:55 am »
Thank you so much for the help! The rheostat I ordered from eBay did the trick.  I can make this work until I can get the upgrade from Woodmizer.  Aside from the  powerfeed, my sawmill is like brand new.  Very little wear, 106 hrs.  Super excited to start cutting.🤗