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Old 20 September 2005, 15:13   #11
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Well my Suzzy gauges also fog up, as does my Plastimo fuel gauge. But the spec on the fuel gauge says that it is designed to fog up, but that it is also designed to breathe so that the said condensation can escape once it has warmed up a little. Perhaps Suzuki gauges are designed to do the same? Maybe even Evinrude do!
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Old 20 September 2005, 18:52   #12
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I still think that we let the manufacturers get away with too much.

If they were properly sealed against moisture, we wouldn't be having this conversation!

None of us would be impressed if our car gauges started to fog, so why should we accept it on a boat?

Just for reference, once I changed the Volvo tachometer for a VDO one on my last boat , it never fogged again - so it IS possible to make things properly!

OK, I'll get off my soap box now!

Cheers!

Chris.
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Old 20 September 2005, 22:07   #13
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Even my Land Rover gauges don't fog up - not EVER!!!
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Old 21 September 2005, 03:52   #14
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Do you think the fogging is caused by the air trapped inside, during manufacture rather than from the outside world? If a Manufacturer wanted a completly fog free gauge they'd put nitrogen or some other inert gas inside wouldn't they.
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Old 22 September 2005, 06:19   #15
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I think the problem is that many of the gauges have a small bulb and hole in the back. If the bulb is connected and switched on it heats up and the air inside the gauge expands. When you switch off it cools and draws damp cool air inside. This also happens with changes in pressure and air temperature. The condensation builds up and just doesn't seem to escape.

I think Chris is right, we shouldn't accept it on new gauges.

Pete
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Old 22 September 2005, 08:41   #16
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Quote:
Originally Posted by Chris Murray
once I changed the Volvo tachometer for a VDO one on my last boat , it never fogged again - so it IS possible to make things properly!
I thought Volvo gauges were made by VDO!
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Old 22 September 2005, 12:18   #17
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Chris,

No problems to date with the Etec "retro" guages on Scooby.

However, the Standard Horizon plotter misted up earlier in the year & Martin had to cut it out from the dash, take it home & leave it in the airing cupboard for a few days. Aint technoloy great??

Cheers.

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Old 22 September 2005, 18:14   #18
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Quote:
Originally Posted by Dirk Diggler
I thought Volvo gauges were made by VDO!
They are now but I don't think that they were in 1989, when I bought Aries II.

At least if they were, they only had a single lens at that time. It was perhaps 8 - 10 years later that I fitted the new Volvo one, then made by VDO.

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Old 22 September 2005, 18:18   #19
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Quote:
Originally Posted by Pete7
I think Chris is right, we shouldn't accept it on new gauges.

Pete
Thanks Pete - So how do we get the manufacturers to address the problem?

I agree that the hole in the back is very likely to be the source of the problem. Maybe we need a different light fitting that seals properly?

Cheers!

Chris.
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Old 23 September 2005, 23:43   #20
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Quote:
Originally Posted by Richard B
Never seen a set of Yamaha Gauges then Seb? ours are condensation free, anyway! (that was a smug smiley).


Do you think thats because the gauges are so Yummy or because your boat always has it's cover on when not in use....or both? It's been a long time since I had Yammie power but I can't recall having a problem with the guages

To the best of my knowledge no engine guage comes with a cover, and the Opti and Tohatsu guages like to mist up a bit. I wonder if an instrument cover and a bilt of Silica Gel might help or line the Cover with space blanket material to retain some warmth and inhibit the condensation
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