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12-18-2013, 07:37 PM
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#1 |
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Registered User
 Join Date: Oct 2013
Location: Newfield,Maine
Posts: 55
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Antique thermostat
I am working on the cooling system for my 51 3100. The 235 in it is a replacement. No idea what year. I removed the thermostat to inspect it and was surprised with an unfamiliar object. It is obviously a thermostat but instead of the familiar cylinder with a spring coiled around it it consists of a bellows as big around as the opening it rides in.
What I'd like to know is how long ago this style was replaced with the modern version.---Jack |
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12-18-2013, 08:27 PM
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#2 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: Antique thermostat
That may well be an original. They did use them in trucks in the 50 early 60's but not much after that. I'd hang onto it for a paper weight or something. Can you imagine the cost of that today. I'd bet $60 or so
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12-18-2013, 08:38 PM
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#3 |
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Registered User
Join Date: Oct 2013
Location: Newfield,Maine
Posts: 55
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Re: Antique thermostat
My thoughts also.I was thinking of shinin it up a bit and hangin it from the christmas tree. A true redneck decoration.---Jack
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12-18-2013, 11:40 PM
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#4 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: Antique thermostat
There ya go.
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12-19-2013, 08:53 AM
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#5 |
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Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Antique thermostat
Don't know the answer to your question, but I had the same kind in my truck.
__________________
Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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12-19-2013, 08:22 PM
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#6 |
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Registered User
Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,204
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Re: Antique thermostat
That's the same type as in my '36 Plymouth. When I was getting the car ready to drive after sitting since '59, I bought a new thermostat. Wouldn't you know... it was sticking right out of the box. I went back to the old one! I believe the last company to use that 'stat was Robertshaw. They might have produced a version of that design until the company was bought out in the '80s or '90s. Production cost was higher so they became a fairly expensive thermostat. Go to google and do a search in "images" for "robertshaw automotive thermostat" and I believe you'll see newer versions sold by Stewart, who bought Robertshaw.
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12-19-2013, 08:39 PM
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#7 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: Antique thermostat
I was thinking he meant one like this. The robert shaw type I've seen in the 80's
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12-19-2013, 08:42 PM
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#8 |
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Registered User
Join Date: Jul 2011
Location: Las Vegas - Nev. aka Sin City
Posts: 1,835
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Re: Antique thermostat
xmas ornament ? v v cool
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12-19-2013, 11:02 PM
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#9 |
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Registered User
Join Date: Oct 2013
Location: Newfield,Maine
Posts: 55
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Re: Antique thermostat
To DWCSR: That's it.Mine looks just like that. As close as the 80s. That sounds about right. That is when this truck was last worked on.---Jack
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12-20-2013, 07:34 PM
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#10 |
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Registered User
Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,204
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Re: Antique thermostat
Thermostats have progressed and changed shape over the years. Most have changed to a wax pellet design with a spring to force the valve closed but the Robertshaw continued to use a bimetal bellows long after the others. At some point the bellows became sleeved and not visible. I just meant that a person might see what the last version of the bellows type 'stats looked like compared to the early ones by looking on the 'net. Here's my old Plymouth one.
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