Home » Public Forums » GMCnet » electric wiper speed control
| electric wiper speed control [message #203994] |
Sun, 07 April 2013 22:50  |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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I installed KenH's great electric windshield wiper conversion. I'd like to remove the old linear wiper control and replace it with a linear potentiometer for speed control in the original control location.
Rather than trying re-invent the wheel, has anyone done this and if so how? Also if anyone has tried it and run into problems I'd like to hear about that also.
I did find T Lins photos of a switch installation on the GMC photo site.
http://www.gmcmhphotos.com/photos/g4348-electric-wipers.html
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: electric wiper speed control [message #203996 is a reply to message #203994] |
Sun, 07 April 2013 23:06  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Can't help you with that but I can tell you that JimK will buy your old wiper control switch and cable for pretty good money. He's bought two from me.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] electric wiper speed control [message #204008 is a reply to message #203994] |
Mon, 08 April 2013 08:10 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Steve,
The closest change I've seen to what you propose was done by the retired
chief engineer for Textronics. He mounted a standard rotary potentiometer
with its shaft parallel to the dash panel with a large flat circular knob
extending through the dash slot -- a thumbwheel, in other words.
'Way back I did look for a linear pot. like you suggest, but never found
one that could be mounted easily.
HTH,
Ken H.
On Sun, Apr 7, 2013 at 11:50 PM, Steve Southworth wrote:
>
>
> I installed KenH's great electric windshield wiper conversion. I'd like
> to remove the old linear wiper control and replace it with a linear
> potentiometer for speed control in the original control location.
>
> Rather than trying re-invent the wheel, has anyone done this and if so
> how? Also if anyone has tried it and run into problems I'd like to hear
> about that also.
>
> I did find T Lins photos of a switch installation on the GMC photo site.
>
> http://www.gmcmhphotos.com/photos/g4348-electric-wipers.html
> --
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] electric wiper speed control [message #204048 is a reply to message #204008] |
Mon, 08 April 2013 12:58 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Ken, what's the value of the pot? I asusme it's linear taper?
And, 'Tektronics' (the oscilloscope maker) or another firm?
--johnny
________________________________
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist <gmclist@temp.gmcnet.org>
Sent: Monday, April 8, 2013 9:10 AM
Subject: Re: [GMCnet] electric wiper speed control
Steve,
The closest change I've seen to what you propose was done by the retired
chief engineer for Textronics. He mounted a standard rotary potentiometer
with its shaft parallel to the dash panel with a large flat circular knob
extending through the dash slot -- a thumbwheel, in other words.
'Way back I did look for a linear pot. like you suggest, but never found
one that could be mounted easily.
HTH,
Ken H.
On Sun, Apr 7, 2013 at 11:50 PM, Steve Southworth wrote:
>
>
> I installed KenH's great electric windshield wiper conversion. I'd like
> to remove the old linear wiper control and replace it with a linear
> potentiometer for speed control in the original control location.
>
> Rather than trying re-invent the wheel, has anyone done this and if so
> how? Also if anyone has tried it and run into problems I'd like to hear
> about that also.
>
> I did find T Lins photos of a switch installation on the GMC photo site.
>
> http://www.gmcmhphotos.com/photos/g4348-electric-wipers.html
> --
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] electric wiper speed control [message #204050 is a reply to message #204008] |
Mon, 08 April 2013 13:10 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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It sounds similar to the dash light pot on our old '69 Dodge Polara (I have a vague memory of the dash lights on a wheel and the switch being a rocker.) The radio had "wheels" too to control volume and station.
Larry Davick
Fremont, California
A Mystery Machine
'76 (ish) Palm Beach
----- Original Message -----
From: "Ken Henderson" <hend4800@bellsouth.net>
To: "gmclist" <gmclist@temp.gmcnet.org>
Sent: Monday, April 8, 2013 6:10:38 AM
Subject: Re: [GMCnet] electric wiper speed control
Steve,
The closest change I've seen to what you propose was done by the retired
chief engineer for Textronics. He mounted a standard rotary potentiometer
with its shaft parallel to the dash panel with a large flat circular knob
extending through the dash slot -- a thumbwheel, in other words.
'Way back I did look for a linear pot. like you suggest, but never found
one that could be mounted easily.
HTH,
Ken H.
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] electric wiper speed control [message #204059 is a reply to message #204008] |
Mon, 08 April 2013 14:29 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Ken Henderson wrote on Mon, 08 April 2013 08:10 |
Steve,
The closest change I've seen to what you propose was done by the retired
chief engineer for Textronics. He mounted a standard rotary potentiometer
with its shaft parallel to the dash panel with a large flat circular knob
extending through the dash slot -- a thumbwheel, in other words.
'Way back I did look for a linear pot. like you suggest, but never found
one that could be mounted easily.
Ken H.
|
Hmmm - thumbwheel. That's an idea.
Yeah - the mounting is the problem. Most ways I can find to mount one require an extension of the handle. I'm sure it can be done, but how much of a PITA will it be. It seems sorta silly to go get into a puttsy machine shop project to mount a simple linear pot.
I gotta get this thing on the road so maybe for now Col Ken's rotary pot will just have to hang under the dash from it's wires.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] electric wiper speed control [message #204100 is a reply to message #204048] |
Mon, 08 April 2013 18:46 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Johnny,
500k linear (or larger for longer max. delay; or, smaller for shorter).
Yep, I did misspell "Tektronix" (scopes), didn't I? Guess it's been too
long since I looked at anything other than my Hitachi.
Ken H.
On Mon, Apr 8, 2013 at 1:58 PM, Johnny Bridges wrote:
> Ken, what's the value of the pot? I asusme it's linear taper?
> And, 'Tektronics' (the oscilloscope maker) or another firm?
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] electric wiper speed control [message #204112 is a reply to message #204059] |
Mon, 08 April 2013 20:41 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Steve,
My preferred solution is to replace the OEM washer switch with the PtW/TtW
switch and drill a hole just to the right of there for the delay rheostat.
You did get the brushed aluminum filler plate for the lever slot, didn't
you?
Ken H.
On Mon, Apr 8, 2013 at 3:29 PM, Steve Southworth wrote:
>
> Hmmm - thumbwheel. That's an idea.
>
> Yeah - the mounting is the problem. Most ways I can find to mount one
> require an extension of the handle. I'm sure it can be done, but how much
> of a PITA will it be. It seems sorta silly to go get into a puttsy machine
> shop project to mount a simple linear pot.
>
> I gotta get this thing on the road so maybe for now Col Ken's rotary pot
> will just have to hang under the dash from it's wires.
> --
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] electric wiper speed control [message #204114 is a reply to message #204100] |
Mon, 08 April 2013 20:55 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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'k. I know I can get 10K linear in 60 and 100 mm throw. They may have a dual which would give 20K linear. I'll look in the morning and see what the largest they make might be. Cross fader controls on DJ mixers. The get a lot of wear and fail in that service in a year or two.
We have an old saying which even in today's computerized FFT 'scopes holds true: There's Tek, and there's everybody else.
--johnny
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist <gmclist@temp.gmcnet.org>
Sent: Monday, April 8, 2013 7:46 PM
Subject: Re: [GMCnet] electric wiper speed control
Johnny,
500k linear (or larger for longer max. delay; or, smaller for shorter).
Yep, I did misspell "Tektronix" (scopes), didn't I? Guess it's been too
long since I looked at anything other than my Hitachi.
Ken H.
On Mon, Apr 8, 2013 at 1:58 PM, Johnny Bridges wrote:
> Ken, what's the value of the pot? I asusme it's linear taper?
> And, 'Tektronics' (the oscilloscope maker) or another firm?
>
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
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| Re: [GMCnet] electric wiper speed control [message #204132 is a reply to message #204114] |
Tue, 09 April 2013 06:06 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Johnny,
20K won't give much delay -- not even much range if offset with fixed
resistors. Anything less than 100K is pretty much useless in this
application. The demise of high-impedance tube circuits has made finding
those 500K linears, at a reasonable price, problematic.
Ken H.
On Mon, Apr 8, 2013 at 9:55 PM, Johnny Bridges wrote:
> 'k. I know I can get 10K linear in 60 and 100 mm throw. They may have a
> dual which would give 20K linear. I'll look in the morning and see what the
> largest they make might be. Cross fader controls on DJ mixers. The get a
> lot of wear and fail in that service in a year or two.
>
> We have an old saying which even in today's computerized FFT 'scopes holds
> true: There's Tek, and there's everybody else.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] electric wiper speed control [message #204216 is a reply to message #204112] |
Tue, 09 April 2013 21:36 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Ken Henderson wrote on Mon, 08 April 2013 20:41 |
Steve,
My preferred solution is to replace the OEM washer switch with the PtW/TtW
switch and drill a hole just to the right of there for the delay rheostat.
You did get the brushed aluminum filler plate for the lever slot, didn't
you?
Ken H.
|
Yep I have the push to wash and turn to wipe switch. You did send me the filler plate. The pot in a hole to the right would work but I'm obsessed with using the "hole" that is already there. The thumbwheel idea has a lot of appeal.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] electric wiper speed control [message #204433 is a reply to message #204429] |
Fri, 12 April 2013 08:41 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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I'm curious: Why bother with anything other than the '90-'96 Lumina APV
wiper motor I specify for my wiper kit? It has wide range, infinitely
variable, intermittent sweep, low, and high speeds. It's available for
<$20.00 at most junk yards and is almost always in perfect operating
condition; if not, it's easily repaired in most cases. Or, it's a stock
item, rebuilt or new, at AutoZone for <$80.00. It works without change
with my hardware kit and my wiring harness. Or, if you upgrade the
steering column to a multi-function switch, it's a straight-forward
connection.
Please tell me why you want to use something else -- maybe I need to make
changes to the kit?
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com
On Fri, Apr 12, 2013 at 8:56 AM, Ted Petty wrote:
>
>
> Check this out. When I covert my wiper system this is what I plan on using.
>
> http://www.ebay.com/itm/290882313191?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
>
>
> E-Bay
> Item number
>
>
> 290882313191
> --
> 75 Avion-----
>
> Jeep Wrangler Towd
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] electric wiper speed control [message #204436 is a reply to message #204433] |
Fri, 12 April 2013 09:19 |
Michael Morton
Messages: 21
Registered: July 2004
Karma: 0
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Junior Member |
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I wanted a switch that fit in the origional hole without modification and looked origional. The Ford set up is also variable, intermittent sweep, with low, and high speeds and with a push to wash feature. Here is a picture of one mounted in the Ford dash, I just mounted it vertical instead of horizonal.
http://www.ebay.com/itm/1975-91-Ford-Econoline-Van-LH-Dash-Panel-Intermittent-Wiper-Headlight-Switches-/350545863572?pt=Motors_Car_Truck_Parts_Accesso ries&hash=item519e296394&vxp=mtr
I got everything, motor, wiring, switch and intermittent box for 25 dollars from the men's mall. Using the whole set up from the Ford, switch, wiring, and motor it all works good and is all designed by the factory to work together.
I just wanted a sliding switch like the origional and this worked great for me.
Mike Morton
1975 Eleganza (Sloopy)
Rebuilt from the ground up over the last 8 years
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