BMW K bikes (Bricks)

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1Back to top Go down   Speedo gears replacement Empty Speedo gears replacement Sun Jun 01, 2014 3:45 pm

ReneZ

ReneZ
Life time member
Life time member
Hi, I posted earlier about having a very fast bike, even without a running engine - speedo goes to max as soon as you switch on the contact.
I have now opened the cluster/breadbox and found the green and orange gear wheels partially without teeth and the bodies flexible. Think someone sprayed electro-cleaner in there in anger and the plastic is no longer hard. The little gear that drives it all has broken away and was stuck between the other gears. Not good.

I had an other speedo that I'll use as a parts-bin, but am stuck. All the gear wheels are easily removable except for the little one on the drive shaft (left of the orange wheel). Off course I don't want to damage it, as I need it, but wonder if it is an interference fit or is there something else going on.

Appreciate any experience out there!

Speedo gears replacement <a href=Picture of donorSpeedo gears replacement SpeedoGearwheels1" />


Speedo gears replacement <a href=Picture of damaged gearSpeedo gears replacement SpeedoGearwheels2" />


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Speedo gears replacement Rain
BMW K1200GT - 2003 (ZK01223)
    

2Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 4:18 pm

robmack

robmack
Life time member
Life time member
I can't offer experience Rene.  However, when I read your post, I was thinking these gears fail more and more as age takes their toll.  If someone could get the exact specs for the gears, duplicates could be designed using Sketchup and printed at will for low cost using Thingverse / Shapeways .  The choice of materials is vast nowadays and the replacements could be made of a Aluminide, strong flexible plastic or even metal.


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

3Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 4:25 pm

ReneZ

ReneZ
Life time member
Life time member
Hi Rob, yes, I though a Spanish gentleman recently posted about having made some gear wheels with a 3D printer. They looked very good, but I think they only made a limited run and there was no response to queries from others. My problem is that I have (old) spare wheels, but I don't know how to get the little pinion off without damaging it. Guess I'll have to try as it isn't any worth like this....


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Speedo gears replacement Rain
BMW K1200GT - 2003 (ZK01223)
    

4Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 4:33 pm

charlie99

charlie99
VIP
VIP
a few of the members have done this rene ....

hope fully bob (rt) and others will chime in


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OSpeedo gears replacement 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 ..
    

5Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 4:49 pm

kartooo

kartooo
Silver member
Silver member
heard a few people have had good luck with these guy's

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


__________________________________________________
85 k100rt current
04 vulcan 1500 classic sold
07 bonneville black sold
05 fjr1300 sold
04 r1150rt sold
91 k100lt sold
r80rt sold
85 K100 sold
    

6Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 6:25 pm

Jhepburn

Jhepburn
Silver member
Silver member
I had a similar problem, and I had an entire spare instrument panel. I confess I took the easy way out - I replaced the entire unit when I found out the drive gear was one of the problem ones - it appeared to be glued onto the shaft, so I didn't want to try to get the spare off its motor. 

This meant I wound the odo back to approximately the right value, which meant going via the smallest gear, so it took a couple of days in front of the TV. I don't recommend that unless you absolutely have to. 

I do wonder if you can get replacement gears from hobby shops. I haven't tried, but I might try if I ever have to do this again.

    

7Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 6:43 pm

ReneZ

ReneZ
Life time member
Life time member
I just ordered a set from the above address, not cheap but lifelong guarantee and I expect to do many more miles on this bike :-) The site was very clear that it is practically imposible to get the litle pinion off the shaft. So much for trying....


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Speedo gears replacement Rain
BMW K1200GT - 2003 (ZK01223)
    

8Back to top Go down   Speedo gears replacement Empty Re: Speedo gears replacement Sun Jun 01, 2014 6:48 pm

kartooo

kartooo
Silver member
Silver member
they have some nice pdf's with step by step inst and pics.
looks like a lot of time and patience involved for that job.....


__________________________________________________
85 k100rt current
04 vulcan 1500 classic sold
07 bonneville black sold
05 fjr1300 sold
04 r1150rt sold
91 k100lt sold
r80rt sold
85 K100 sold
    

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