BMW K bikes (Bricks)


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1Back to top Go down   Fogging Instruments Empty Fogging Instruments Fri Oct 13, 2017 9:33 am

yamaguzzi

yamaguzzi
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Well,today I took the 1988 K100 out for her first ride in 14 years. It went well and I did around 50 miles locally on secondary roads .Yes,she still needs new rubber and that will happen soon. The only problem ,if you can even call it a problem ,is after a while as the motor gets warm the instruments got fogged up.Has anyone else had this happen?


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1988 K 100RS ,1975 Moto Guzzi 850-T , 1971 BMW R60/5 , 1971 Yamaha R5B,1969 Yamaha DS6C ,1966 Yamaha YM1 , 1965 Yamaha YDS3
https://motoguzzi850t.blogspot.com/
    

2Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 12:02 pm

robmack

robmack
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Known problem with the early instrument clusters as they didn't breathe. Later instrument clusters had vents with Gortex filters on the back of the case that permitted air to enter but not moisture.


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Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

3Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 1:05 pm

MartinW

MartinW
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I vaguely remember a cure was to put those silica gel packets in the back of the instruments. Another method involved sealing the joining seam with tape.
Regards Martin.

    

4Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 6:28 pm

nino

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There are two options:

1. Buy laler instruments pod with goretex membrane

2. Drill 2 mm hole at the lowest section of instruments pod like I did and problem fixed. No fog any more.

Regards

    

5Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 7:36 pm

sidecar paul

sidecar paul
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Mmm, I tried all the ideas, drilling holes, sealing the whole cluster, fitting Goretex panels, etc; but the only real cure came with fitting a fan!

https://www.k100-forum.com/t3238-a-cure-for-speedo-condensation

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

6Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 8:02 pm

charlie99

charlie99
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Fogging Instruments 112350


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

7Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 8:03 pm

nino

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Drilling worked for me.

    

8Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 8:41 pm

Dai

Dai
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robmack wrote:Later instrument clusters had vents with Gortex filters on the back of the case that permitted air to enter but not moisture.
Mmm... LFB would argue with you over that one. I sprayed the inside of my cover with GT85 and then carefully cleaned it all off. It left enough of a film not to distort the view of the instruments but it killed the fogging stone dead.


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

9Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 9:42 pm

MartinW

MartinW
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Found the article on the fogging fix.http://www.motobrick.com/index.php/topic,7870.msg56850.html#msg56850
Regards Martin.

    

10Back to top Go down   Fogging Instruments Empty Re: Fogging Instruments Fri Oct 13, 2017 10:19 pm

yamaguzzi

yamaguzzi
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Thanks for all this great input.I knew I'd get the answers I was looking for here.I'm relieved that it is a common thing.I was thinking that perhaps something was happening down in the motor with the cooling system sending moisture up. The bike runs great and I'm feeling more and more comfortable on it as I ride it , learning all it's little noises and things.Yesterday was the first 50 miles,today I ride again and go a little farther but still going slow and on secondary roads. She has a good feel to her. Been 10 years since I got to know a new bike .I'll probably try the drilling out some holes fix soon and see if that works.


__________________________________________________
1988 K 100RS ,1975 Moto Guzzi 850-T , 1971 BMW R60/5 , 1971 Yamaha R5B,1969 Yamaha DS6C ,1966 Yamaha YM1 , 1965 Yamaha YDS3
https://motoguzzi850t.blogspot.com/
    

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