Steamy rev counter

C

Chrisninja

Junior member
Location
Essex
Just rebuilt carbs after coming out of ultrasonic cleaner and started first time .my question is after a short time of it running the rev counter steamed up has anyone else experienced this ,is this common ,is this something that I have to live live with ,I did notice the small part that fits in the top of rocker cover the part that fits onto the taco cable has a small grove round it Cound there be an oring or something missing (help) I would rather disconnect rather than it steam up can't be doing it any good
 
Chrisninja said:
Just rebuilt carbs after coming out of ultrasonic cleaner and started first time .my question is after a short time of it running the rev counter steamed up has anyone else experienced this ,is this common ,is this something that I have to live live with ,I did notice the small part that fits in the top of rocker cover the part that fits onto the taco cable has a small grove round it Cound there be an oring or something missing (help) I would rather disconnect rather than it steam up can't be doing it any good
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What make of rev counter are you talking about? A triple I suppose?
The ND instruments easily mist up when the lights are on. Down to a lack of sealing between the base and the cover.
But the Smiths also mist up.
As for the Veglia....

Weather is damp at the moment.

Paul
 
Chrisninja said:
Just looked they are nd. Are the gauges crimped together do you know
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Yes.
In view of concerns expressed below: See post #10 before taking the following advice.

Try removing the rev counter and putting it in a warm, dry place, glass-side down. That should clear the condensation, if it's water.
Let it cool down, in a dry atmosphere, before replacing on the bike.
 
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I read that storing ND gauges upside down will cause the damping fluid to leak. And it can end up on the inside of the 'glass'. So a better idea is to pop the revcounter right way up in a warm dry place for a couple of days and/or use a dessicant.
The rubber lampholders do seal the gauge openings, but perish / split with age.
If you do a search you'll find everything you need to know about opening the casing, but believe me that's not somewhere you want - or need - to go!
 
The gauges are closed by a crimped ring between black body and the bottom part.
There is also a large O ring inside.
But they do absorb humidity nonetheless. You want to be sure that the bulb holders are firm in the bottom of the instruments. The rubber perishes and shrinks with time, allowing moisture in.
I have a few instruments that don't seem to have suffered upside down but all rules have their exceptions.

Paul
 
Jo said:
Are you sure Hamish? IIRC those instruments shouldn't be stored upside down ...

Cheers,
Jo
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I don't mean a long term storage that way, simply that it's easier to get the humid air to vent out of the case if the top (at the time) is open.
Perhaps, in view of Jo and Thomas' concerns, it would be safer to bring it in to the warm and put it in a sealed box (tupperware) with silica gel.
 
Ernesto said:
You can reduce the tendency to mist up by using 2W bulbs
instead of the original 3W.

Ernesto
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Really? I would have thought the 3w would be better because it’s hotter?
The other thing that I’ve done on other bikes in the past is give the inside of the glass a really thorough clean with the same antifog cleaner I use for my spectacles (if you can disassemble it…)
 
Andy said:
Really? I would have thought the 3w would be better because it’s hotter?
The other thing that I’ve done on other bikes in the past is give the inside of the glass a really thorough clean with the same antifog cleaner I use for my spectacles (if you can disassemble it…)
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They mist mostly with the lights on which dispels the heat drying theory. Quite the contrary. The heat vaporises the humidity which cannot escape.
Paul
 
It is a common problem.
When Jase services our gauges here in Aus he drills a small hole somewhere on the underside to let them breath.
I think ND did this on later runs of the same gauge.
The condensation should disappear after about 1/2 hrs riding👍
It used to bother me, now couldn’t care less,
Twist your right wrist a bit more will help you notice less👍👍😂
They do also seem to dry out the more you use them.
Think they respond well to having the odometer tick over😂
 
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