britishtrident
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| posted on 17/12/09 at 10:51 PM |
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Coolant Pressure Gauge
F1 inspired idea, Locost way.
The F1 teams monitor cooling system, so I started thinking
I had a spare tapped hole in the an line hose temperature gauge adaptor on the tin top, I also had a cheap rear entry pressure bourdon gauge lying
around so I put the two together.
Surprisingly it worked out quite well , it shows if the cooling system is holding pressure and I can also tell if coolant is circulating.
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MautoK
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| posted on 17/12/09 at 11:24 PM |
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Nice idea, but how do you tell if coolant is circulating from a single-point pressure measurement?
Am I missing something obvious?
John.
He's whittling on a piece of wood. I got a feeling that when he stops whittling, something's gonna happen. (OUATITW/Cheyenne)
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britishtrident
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| posted on 17/12/09 at 11:33 PM |
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Surprisingly easily, the water pressure in the top hose rises when the RPM is increase to 2,000 or so and falls back when the rpm drops. Once you
establish what the normal is for the engine too big an increase in pressure indicates a choked radiator, no increase indicates a water pump problem.
I currently have a 1bar gauge fitted it should have a 2bar.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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MautoK
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| posted on 18/12/09 at 12:08 AM |
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That follows, in principle.
But I'd have thought the highest impedance would be the thermostat.
The implication of your OP is that your P transducer is in the top hose (after the 'stat)...in which case the pressure would drop as the pump
speeds up...?
Unless you've got one of the new-fangled bottom hose 'stats, of course.
J.
He's whittling on a piece of wood. I got a feeling that when he stops whittling, something's gonna happen. (OUATITW/Cheyenne)
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turbodisplay
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| posted on 18/12/09 at 08:15 AM |
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A differential gauge would show how it was working very well, without having to decide on a benchmark.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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britishtrident
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| posted on 18/12/09 at 08:22 AM |
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The main interest is showing up slow leaks, if the pressure only falls slowly after switch off them all is well.
Some head gasket problems should also show up.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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britishtrident
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| posted on 18/12/09 at 12:57 PM |
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---
 
Rescued attachment PC180044-1.JPG
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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