Hi guys / girls....went for a nice ride with the lads today to the Goulburn swap meet and it was pretty crappy from a K100/75 perspective with one bucket of broken bits on offer imagine the 4 of us around it looking down in disgust...but I am off the track a bit....anyhow on the way back I lost the odometer or more to the point it stopped moving the speedo was fine but KM's to refuel was absent ...i did manage to put 19.5 litres in the old girl the most I have from memory.

So who can tell me the link to the most recent repair troubleshoot entry.
i have 2 spare sets of clocks and fitted one this afternoon and all is great except no speedo on this one no idea if odometer also...suspect so. my last choice has 182, 000 kms on it so suspect it also has issues to be confirmed.

So a clocks workshop may be in order...what to look for and where parts are available if needed like cogs etc.

so how many revs for how many km's in top gear kids?.....

Cheers Klompy

many posts klompy

but by far the best way to adjust the speedo is with the software for the pc ("Karumba" ?) ....taken out the headphone jack and then to the sensor cables to produce the pulses required ...but are the same across all the variations of the models ...the impeller setup doesn't change at all for all the monoshock rear ends

I was looking for the gears as well
seems we can get them here in aussie  relatively cheep (but you need to know the gear count per cog for the instrument you have fitted it appears ) many sites quote different numbers ))))

from memory 3850 -3900 or so gives 100 kph in top gear on the rs diff ratios
4100 round about on the rt -lt for 100kph 

be back with the links

try this first up
https://www.k100-forum.com/t4122-odometre-gears-availability-in-Australia

have a look here also

http://www.odometergears.com/products/BMW/R+%26+K+Motorcycles/42

inge and quite a few of us have used the duplication (fine cables soldered point to point )  method to fix the plastic circuit from the input pins on the cluster to the speedo drive motor and amplifier circuits ...it isn't too hard ....but a couple of tricks in there
hope that helps

btw im after gears as well ...don't know which exactly just yet as gerty is the only transport at the moment

but will pull the instruments apart soon

charlie99 wrote:many posts klompy

but by far the best way to adjust the speedo is with the software for the pc ("Karumba" ?)  

Karamba   
https://www.k100-forum.com/t2038-karamba-speedometer-calibration-program-tutorial

charlie99 wrote:many posts klompy

but by far the best way to adjust the speedo is with the software for the pc ("Karumba" ?) ....taken out the headphone jack and then to the sensor cables to produce the pulses required ...but are the same across all the variations of the models ...the impeller setup doesn't change at all for all the monoshock rear ends

I was looking for the gears as well
seems we can get them here in aussie  relatively cheep (but you need to know the gear count per cog for the instrument you have fitted it appears ) many sites quote different numbers ))))

from memory 3850 -3900 or so gives 100 kph in top gear on the rs diff ratios
4100 round about on the rt -lt for 100kph 

be back with the links

try this first up
https://www.k100-forum.com/t4122-odometre-gears-availability-in-Australia

have a look here also

http://www.odometergears.com/products/BMW/R+%26+K+Motorcycles/42

inge and quite a few of us have used the duplication (fine cables soldered point to point )  method to fix the plastic circuit from the input pins on the cluster to the speedo drive motor and amplifier circuits ...it isn't too hard ....but a couple of tricks in there
hope that helps

btw im after gears as well ...don't know which exactly just yet as gerty is the only transport at the moment

but will pull the instruments apart soon

no shortage of broken ones here mate you can borrow...or we can fix for swaps etc...I will need to pull them apart and see what is what...but i do know I have 2 RS units and one RT (ex police)....is there a noddy's guide to opening these up without destroying them?

Try this mob in US http://www.speedometergears.com/bmw-mercedes-odometer-gears

this link to oldgoats resto might help klompy

https://www.k100-forum.com/t1941p450-85-rs-restoration-part-1#19480

but I think sidecar paul has some detailed pics of the whole process ...cant find them just yet

hope it helps

started pulling her apart and lookie what i see...














Can you find the missing screws??

Are you seeing something I am not?
Are you seeing....things?
Is it the sticker?
Are you missing a washer?
Can I borrow your glasses?
Is there a dead people?

Do you see what I see

https://www.youtube.com/watch?feature=player_detailpage&v=civzfZ_3uVc

Missing pin?

lots and lots of broken bits of plastic inside......oh well swaps time with the others...

All fixed and now I is a Constable,,,,,,,,,,,,,,,

The newer cluster have a pcb which work together with a switch type float level sensor in the fuel tank.
(If you got the genuine tank for your model you have a thermistor level sensor).

If you want the warning lamp to function properly, you need to swap the pcb to one to be used together with the thermistor sensor.
(and you need one for a 9 screw cluster, the one in the 7 screw cluster earlier in this thread won't fit).

broken - split teeth klompy ?

good result mate

good to have spares on hand ...huh ?!

and I notice you've lost a few killometers as well ....giggles

The rear of the Speedo was trashed all the plastic busted surprised anything worked....all gears are good and stowed away for use later...now to convert a post 85 to pre 85 use for fuel indication.....swap a PCB apparently is all that is required....conductive tape apparently the same....excellent more knowledge...

Great to see your work. Now you need to practice your skills. When do want mine?

I do have enough bits to help post 85 guys out with specialised bits....Inge any reason why these PCB's are different...both is/was fitted to a 7 screw 7litre/4litre orange /red thingy.


Anyhow the unit I have fitted now works great although I may never know I am out of fuel until I am walking so want to change PCB...even if it only gives me the last 4 litre warning.


Ideas?  at this stage its an easy fix to swap Tacho assemblies and it should be tickety boo...yes Inge?

The fuel level pcb which still is mounted is a 7 screw model, to be used together with the thermistor sensor and 4 + 7 L warning.

It was also a later model of the thermistor pcb using only the 4 L lamp, those was aviable in both 7 and 9 screw models.

The single pcb in the pic is one to be used together with a float sensor, 5 L warning and 9 screw only.
That it was in a 4/7L, 7screw cluster.....I'll guess that the cluster have been used on a later model bike With a float sensor.........or the genuine bike have changed the fuel tank to a newer model.

Thanks Inge that sounds right as this was a unit that had been played with in the past...lots of new bits and a screw broken inside...so although it had 4 and 7 it was a 4 only unit ...the missing bulb and pristine holder was another hint....ex police low km's ...must have fallen over at some stage.
anyhow tacho unit changed, a small amount of filing as new tacho housing had one less screw groove on lip.now fitted all works but will need to reduce fuel to see if that works now.....fingers crossed and good comfy walking shoes on tomorrow.....