Inop oil temperature gauge

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8319
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Name: Wood L
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Inop oil temperature gauge

Post by 8319 »

I need to replace an inoperative oil temp gauge on my 1947 Cessna 120.
Everything I have found is either too big (2.25 inches) or too small (1.25 inches) for the hole in the panel.
If anyone has an idea about where I might find a 1.75 inch diameter gauge ( either mechanical or electrical) I would be most appreciative.
The existing gauge is mechanical and was originally made by Rochester Instruments.
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6298
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Name: Randy Thompson
Location: California
Aircraft Type: Cessna 140
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Re: Inop oil temperature gauge

Post by 6298 »

I can see the front bevel being 2.25 inches, but I have used several brands and they all fit. I will look at several different ones I have to verify, and report back.
Randy Thompson A&P IA Pilot
Hold STC SA547EA for installation of O-200 engine in Cessna 120/140 and 140A"s
Overhaul small Continentals
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6298
Posts: 246
Joined: Tue May 01, 2018 7:00 am
Name: Randy Thompson
Location: California
Aircraft Type: Cessna 140
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Contact 6298

Re: Inop oil temperature gauge

Post by 6298 »

I just checked six of mine. One Stewart Warner, one Arrow, one Scott, and three un-labeled. All six measured 2 1/16 inches.
Last edited by 6298 on Fri Sep 21, 2018 12:54 pm, edited 1 time in total.
Randy Thompson A&P IA Pilot
Hold STC SA547EA for installation of O-200 engine in Cessna 120/140 and 140A"s
Overhaul small Continentals
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6643
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Joined: Tue May 01, 2018 7:00 am
Name: John C
Location: KLCI, NH
Aircraft Type: 1946 C140/C90
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Re: Inop oil temperature gauge

Post by 6643 »

Aircraft Spruce sells the Rochester gauge, which is 2-1/16". I'm pretty sure it's also the direct decedent of the original.
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