Almost missed your post.
Don...;) I don't have any pics of the fan switch, but
a trip to Radio Shack will give you a good idea:
1 project enclosure part # 270-288 (2"x 1.3"x.5")
1 Lever switch or Roller lever switch, part #275-017A (SPDT)
(I used it as a SPST)
Attach a 4 inch piece of plastic or aluminum (shaft) to the lever switch,
install the switch in the project box, (carve an opening for the lever
to go through). Find some plastic, I used little plastic part bin dividers
and made paddles out of them to put on the end of the lever for the
drag I needed. ;) Maybe a picture would be better.
George
>>>>>>>>>>>>>>>>>
Date: Sun, 10 Nov 2002 02:16:04 -0600
From: "Mallett, Donald B" <Donald.Mallett@BNSF.com>
Do you have any pixs of this? My 1st part of this job is getting the
freaking clutch fan off. My dak has the aux. electric fan I think when the
time comes I'll tap in to that circuit for the new larger main electric fan.
I do foresee the need of relays with tapping into the aux. fan circuit but
have not looked into yet. I will when I find a electric fan to my liking
(and the check book).
>Don, you can adjust the paddle sizes on the switch
>lever to give you varing amounts of "drag" to acitvate
>the switch at different mph. A volt/ohm meter with an
>audible tone for continuity helps to hear when the switch
>opens, in the cab, then note the speed. Electric fan should
>cut off at that speed. You need a solid cutoff or you'll
>get switch bounce.(Not good for the fan circuit)
>
>George
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