A somewhat common cause of K bike odometer failure is that some of the teeth may break off of one or several the gears that drive the odometer as the plastic ages and weakens.

Here's a quick graphic I put together about odometer gears:

I normally don't link to other people's work but I stumbled across the following YouTube that I think is good. The language is not English but it's still worth watching in my opinion. (I have no affiliation with the creator of this video.)

Link: https://www.youtube.com/watch?v=8IT6zm8771k

 

KPH vs. MPH

Kilometer and mile odometer gear sets have different numbers of teeth on some gears:

Gear	Color	KPH	MPH
Driver	Clear	12
Top	Orange	44-16
#2	Green	40-34	40-28
#3	White	23-22	28-22
Bottom	White	33-11

  

  

© 2024 Drake Smith - Please do not use or reproduce this elsewhere.  Feel free to link to it though.