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1Back to top Go down   Speedo help Empty Speedo help Tue Feb 07, 2012 5:57 pm

Crazy Frog

Crazy Frog
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I just removed the speedo from the bike to try solving an annoying problem.
I remember seeing a week or so ago what was the answer to my problem but don't remember where (too much to read on the forum - I am like my computer.... the processor is up to date but the memory is full...)
Here is the problem: sometimes, the speedo won't work and after just a gentle tap on it, it will work until the next trip.
If I remember correctly, it was about a 3 pins connection. I open the speedo and only found a 4 pins connection.
Is that the connection?

Speedo help Dsc_1915

Today I also received the LEDs to install in stead of the bulbs.
First, the base of the LED is a tiny bit to big an will have to be trim down Maybe 1/64").
Second, as a LED will not work if you reverse the polarity, I will have to track the polarity on the circuit.

Speedo help Dsc_1917

CF


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

2Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 6:33 pm

Inge K.

Inge K.
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Could be it was this post that was lost during the hard disk error?:
----------------------------------------------------------------------------------------------------------
Re: Speedometer, Tachometer, and Cogs near breaks
by Inge K. on Sun Feb 05, 2012 1:29 pm

.Other known weak connector points in speedometer signal circuit is:

At the bottom of the connector pins at the multiplug connection on the rearside of the instruments.
The pins is pressed/clinched to the plastic frame with the conductive film between.
At this spot a galvanic reaction occurs, due to the different materials.
The reaction got good help to develop from condensation problems in the instruments.
This area get less heat and air to dry up again, with good help from the rubber gasket
to keep the moisture in place.

Another known cause for speedo failure is the three pin connector at the end of the conductive
film which is connected at the top/rear of the speedo.
It`s a piece of rubberfoam on the rearside of this connector, to add a slight pressure to the connector.

Inge K.
---------------------------------------------------------------------------------------------------------------

From the Flying Brick Forum:

Speedo help Kontak10

Inge K.



Last edited by Inge K. on Tue Feb 07, 2012 6:54 pm; edited 1 time in total (Reason for editing : Adding picture.)

    

3Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 6:58 pm

Crazy Frog

Crazy Frog
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admin
Thanks for the quick answer Inge K.

would it be this one?
This is the only 3 pins connector that I can find on the speedo part. as the bike is stored for the winter, I would like to be able to pinpoint the problem before I put it together for this spring.

The day that spring will come, I won't have any time to work on the bike. It will be riding only!
Now, the bike is in the shed and it's too cold to work on it.
What a life!!!

Speedo help Dsc_1918


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

4Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 7:01 pm

Crazy Frog

Crazy Frog
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admin
Inge K,

You updated your post and I didn't see it. This is exactly what I was thinking.

Thanks a lot.

Bert


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

5Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 7:06 pm

Inge K.

Inge K.
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That`s the one, copy and save...to your recently purchased hard disk.

Inge K.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

6Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 8:16 pm

Rickmeister

Rickmeister
Life time member
Life time member
Re: polarity of LEDs...they usually have a "flat" on the base of the LED. This is the cathode, ie, -ve connection. Also, the LED behaves like a normal diode, with a multimeter on Ohms, has a high resistance with the test leads one way, and a lowish resistance with the test leads reversed. With modern multimeters, the red test lead is +ve in the Ohms mode. So when the lowish resistance is indicated, the red lead lead is on the anode, and the black lead is on the cathode, so when placed in service, the anode is connected to the +ve supply.

Rickmeister.


__________________________________________________
Assumption is the root of all stuff-ups!
    

7Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 8:26 pm

krambo

krambo
Life time member
Life time member
I'm surprised at you CF - it is your forum after all Wink

Check this link:

Speedo Dying ?


__________________________________________________
1984 BMW K100RT, 1993 BMW K1100LTIC,1982 Kawasaki KZ1100 Spectre
"Aut viam inveniam aut faciam." Speedo help Uk-bmw12
http://www.its-personal.net
    

8Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 9:18 pm

Crazy Frog

Crazy Frog
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@krambo wrote:I'm surprised at you CF - it is your forum after all Wink

Who's forum?
Without an international community of great guys like you, this forum would be dead for long time.
I purposely decided to minimize my time on this forum to see if people would assume their role as active members.
I wasn't surprised to see the success. cheers
I am asking for help... Yes, because after all nobody has the supreme knowledge and it's legitimate to use the experience of others

Now, it leaves me a bit of free time and I enrolled in a mentor ship program to help high school students to develop mechanical and engineering aptitudes. The goal is to achieve the design and construction of an ROV (Remotely Operated underwater Vehicle). These students may be your next mechanic or the designers of your next bike.
Believe me it's not an easy task as some of them never held a wrench before. At one point, we all started to learn, and I am eager to pass my knowledge to the young generation.
I believe that most of us in this forum stand for the same principles.

CF



Last edited by Crazy Frog on Tue Feb 07, 2012 9:28 pm; edited 1 time in total


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

9Back to top Go down   Speedo help Empty Re: Speedo help Tue Feb 07, 2012 9:26 pm

Crazy Frog

Crazy Frog
admin
admin
Ulrich_Grabau wrote:Re: polarity of LEDs...they usually have a "flat" on the base of the LED. This is the cathode, ie, -ve connection. Also, the LED behaves like a normal diode, with a multimeter on Ohms, has a high resistance with the test leads one way, and a lowish resistance with the test leads reversed. With modern multimeters, the red test lead is +ve in the Ohms mode. So when the lowish resistance is indicated, the red lead lead is on the anode, and the black lead is on the cathode, so when placed in service, the anode is connected to the +ve supply.

Rickmeister.

Thanks Rickmeister,

The problem is not to find the polarity of the LEDs, but to trace the speedo circuit to find where positive and negative are. (an incandescent bub can go both ways. Not the LEDs)
This is a difficult task when the bike is shivering in the shed and the speedo is comfortably resting in your heated workshop.
The link between both is 100ft, snow on the ground and 40 degrees apart. With no battery on the bike, this makes it a difficult task.

CF


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

10Back to top Go down   Speedo help Empty Re: Speedo help Wed Feb 08, 2012 3:49 pm

robmack

robmack
Life time member
Life time member
The polarity of connections in the speedo are consistent from what I remember. I installed Duck's LED kit by following his instructions. My recollection was that the orientation of the LEDs was all +ve facing inside (or maybe all -ve facing inside). I searched for but was not able to find a copy of his instructions to make sure. This doesn't help you a great deal, CF, but maybe another member who has bought and installed the LED kit from Flying Duck can pipe in. Otherwise, I'll continue to search my papers for his instructions and post here if I am successful.


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

11Back to top Go down   Speedo help Empty Re: Speedo help Wed Feb 08, 2012 4:26 pm

Inge K.

Inge K.
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GitH did earlier post pictures of Drake Smith`s instructions in this thread.

Inge K.

    

12Back to top Go down   Speedo help Empty Re: Speedo help Wed Feb 08, 2012 4:34 pm

robmack

robmack
Life time member
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Thanks for remembering that, Inge. I recall seeing that image but lost which thread it was posted in.


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

13Back to top Go down   Speedo help Empty Re: Speedo help Wed Feb 08, 2012 9:20 pm

K75cster

K75cster
Life time member
Life time member
Hey CF My next bike was built before they were born. Sounds like a nice thing to be doing though. Keith


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

14Back to top Go down   Speedo help Empty Re: Speedo help Thu Feb 09, 2012 2:36 am

Crazy Frog

Crazy Frog
admin
admin
Lvog57 was reading my post and sent me this clear picture...

Thanks Bro.

Speedo help K100_c10


__________________________________________________
Speedo help Frog15Speedo help Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

15Back to top Go down   Speedo help Empty Re: Speedo help Thu Feb 09, 2012 4:58 am

charlie99

charlie99
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thanks lvog


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OSpeedo help Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

16Back to top Go down   Speedo help Empty Re: Speedo help Sun Feb 12, 2012 10:33 pm

FreebasserSF

FreebasserSF
Silver member
Silver member
My speedometer guts definitely don't even look 10% as nice as Lvog57's do...


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"Build a man a fire and he will be warm for a day. Light a man on fire and he will be warm for the rest of his life."
    

17Back to top Go down   Speedo help Empty Re: Speedo help Mon Feb 13, 2012 4:25 am

Stan

Stan
Life time member
Life time member
@FreebasserSF wrote:My speedometer guts definitely don't even look 10% as nice as Lvog57's do...
Just print off the photo, trim around the edges and glue it over yours...you too can a speedo that looks good.


__________________________________________________
1983 K100 basic vin 0003960 colour red  GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

18Back to top Go down   Speedo help Empty Re: Speedo help Mon Feb 13, 2012 4:47 am

FreebasserSF

FreebasserSF
Silver member
Silver member
Even with the printed picture I will still have the problems of non-moving speedo and tach needles. At least they will be pristine non-moving needles and I won't be able to see the ABS and overheat light which stay on. Problem solved. Speedo help 212902

    

19Back to top Go down   Speedo help Empty Re: Speedo help Mon Feb 13, 2012 6:01 am

charlie99

charlie99
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Speedo help 44271


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OSpeedo help Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

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