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Author Topic: condensation on inside face of tachometer  (Read 813 times)

Offline John M

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condensation on inside face of tachometer
« on: April 14, 2013, 08:43:02 PM »
Hi all, my newly resurrected R80 ST is plated and on the road now. she is working well except that when riding I am getting fogging on the interior of the tachometer glass. this seems to happen every time the bike is ridden.
                               Comments?   Solutions?                                      Best Regards John
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1984 R 80 ST , ?1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7

Offline Bob_Roller

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Re: condensation on inside face of tachometer
« Reply #1 on: April 14, 2013, 08:49:34 PM »
The tachometer is not sealed, if you wash the bike, ride in rain, it pretty much fogs up, my '81 R65 has done it since I've had the bike, a little over 32 years now .
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'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline John M

  • Lives in Foothills of Mt. Olympus
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Re: condensation on inside face of tachometer
« Reply #2 on: April 14, 2013, 09:20:06 PM »
That's curious. My 1986 R65 doesn't suffer from this problem .
              Best Regards  John
    
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1984 R 80 ST , ?1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7

Armen

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Re: condensation on inside face of tachometer
« Reply #3 on: April 14, 2013, 09:51:17 PM »
Used to happen to mine. If it stays, pull out a bulb and shoot some hot air in with either a heat gun or hair dryer.
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tvrla

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Re: condensation on inside face of tachometer
« Reply #4 on: April 15, 2013, 11:46:11 PM »
Quote
That's curious. My 1986 R65 doesn't suffer from this problem .
              Best Regards  John
    
Your gauges are different than 'normal' R65s. The monoshock bikes have a plastic gauge pod with two gauges inside - much different than the earlier bikes with the tach and speedo each in their own metal canister.

LED illumination light bulbs help with the fogging.
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Offline John M

  • Lives in Foothills of Mt. Olympus
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  • Posts: 144
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Re: condensation on inside face of tachometer
« Reply #5 on: April 16, 2013, 02:21:06 AM »
Thanks  to all for the responses. I will look into replacing the bulbs with LED's and see if that improves the situation ( only the Tachometer seems to have the fogging problem ).    Type of LED required for instuments ??
1984 R60 ST.
                                 Best Regards John  
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1984 R 80 ST , ?1986 R65 ,2012  Vstrom, 82 goldwing. past bikes 350 and 500 cc velocettes, 250 BSA starfire,350 Kawasaki triple, CB500-4,               67 motoguzzi v7

Offline Bob_Roller

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Re: condensation on inside face of tachometer
« Reply #6 on: April 16, 2013, 08:03:37 AM »
Do not install an LED bulb in the 'GEN', position, if you do, the alternator will not work .

The LED doesn't draw enough current to get the rotor energized enough for electricity to be generated .
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'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
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