motometer extension

pooch

pooch

Well-known member
I believe motometers are designed to read from the hot air/steam above water level.

I never see the MM gauge rise , there is an accessory temp gauge fitted and it shows 140 F max up a hill.

Probably typical non-thermostat temp.

I have seen mentioned, some have extended the heat sensor, so it dips in water.

Does this work, or is it a waste of time?

I assume the way to go is, piece of copper pipe and fill it with solder, and leave a 1/2 inch out on top and crimp it onto motometer using heat transfer paste.
 
I don't think that much of moto-meters.I always found that when they hit the red the steam has been blowing out from under the car for miles.The extensions are only about a dollar of so,(probably double now)and they are a solid piece of brass so they are have a nice positive transfer to the original stud.
 
Was not aware that an extension could be bought over the counter.

May as well wait until I come over next year.

I had a 28 plymouth thermo siphon and the motometer was great.

Run all day at bottom of hole.

Had an original radiator full of bars leak, so you can imagine.

When it wanted water, it would rise to middle of hole.
 
Here is my extention

I made a digital motometer and extended the probe down into the water. Now I get accurate readings of the water temperature as it leaves the head.

Bob
 

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The extension is really just a piece of brass hex stock,threaded to fit the bottom of the meter,and rounded on the other end to clear the opening when you swing the cap closed.I have one bouncing around the top of one of my radiators.When I have to pull the radiator for some reason I will tip it over and try to fish it out.It;s not like something I could retrieve with a magnet.
 
Re: Here is my extention

Bob Johnson said:
I made a digital motometer and extended the probe down into the water. Now I get accurate readings of the water temperature as it leaves the head.

Bob
Click to expand...

Bob, where did you get the guts of that?

I see fridge digital units on ebay for a couple of dollars, but they look too big.
 
Ken,

Battery should last at least a year. Not sure what you are referring to with "Is that a constant on thermometer?"

Bob
 
Probably what I was thinking too.

Even when car is not being used, it is still on and measuring ambient temp.

Like a clock on the wall.

Would be good to have a miniscule push on/off button to save battery.

I suppose you have to dismantle it each year to replace battery?

Tho, Bob, you have given me ideas to experiment with my old dead motometer.

(thinking out aloud), an old oil pressure gauge , make a sealed expansion chamber to screw on line in that dips down into water.

Maybe the heat will expand the air inside and make the bourdon tube /needle turn?

Make a nice backing dial plate and calibrate it.

A needle sweep motometer would be cool.

Probably can't find an oil gauge guts thin enough to fit into an MM case.
 
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I always thought I had bought a cheap manometer. I could not read it from the cockpit easily and the only way to tell if the engine was getting hot was water on the windshield. I do not use a hood. I bought a good radiator from Brass Works and I had a nozzle installed by the upper radiator hose in the radiator. I bought a dial type thermometer from McMaster Carr (2-1/2") and I can see the temperature now. If I go with a hood things will have to change. The thermometer does not use batteries.

Pooch

That is a cool avatar.
 
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If anyone wants an ani gif avatar, shoot me a PM with a pic and their wants.

It can't be too flash, as an avatar is restricted to pixels and Kb, so they have to be fairly rough to post.

ATM, I am upfoot bound after an op on foot and getting cabin fever in front of computer.

I am no expert, just a bit of fun and time wasting in making them.
 
I have an original Model-A Ford face plate moto meter and one of the repop Model-A moto meters. They both work, but the original is way more accurate.;)

Bob-A:D
 
I kind of remember reading somewhere, maybe on the Barn, that a person could take an old brake spring, cut off the ends and it was suppose to fit over the end of the MM in the radiator tank extending it down far enough to pick up the temp. Have not tried this so don't know if it works.
 
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