FYI Odometer gear Euro and USA are same

[Mtsurfposse]

My odometer gear crumpled last fall. When getting replacement gear I didn’t know which to get or what was different between the 20x30 USA vs EURO and my disintegrated gear gave no answers. After getting both versions my calipers tell me that there is no difference

I’ll upload a photo later, I can’t seem to do photos from an iPhone

Sierra madre part #
OM 066
OM 021
76-89 20x30 gear

[PeteKz]

Count the teeth too.

[Mtsurfposse]

They are both 20x30.
The one thought I had was that the dimensions of the teeth would be different. But they are not, or at least If there is a difference it’s within manufacturing spec

I believe that the difference between US and Euro gauges is simply in the gauge face being in Km/h or mph

[wazzz]

Originally Posted by Mtsurfposse

They are both 20x30.
The one thought I had was that the dimensions of the teeth would be different. But they are not, or at least If there is a difference it’s within manufacturing spec

I believe that the difference between US and Euro gauges is simply in the gauge face being in Km/h or mph

Yes but how do they get the km and miles digits to increment at every 1000 meters for Euro models and at every 1609 meters for US models? There has to be some physical differences. Maybe it is the other gear?

[Mtsurfposse]

I'm scratching my head too, I bet there's an 80 year old guy named Torsten who could tell us.
But the ODO gear that disintegrates are the same. These are the Euro an the US gears from SIERRA MADRE


Again, my confusion was because my car was a RoW imported and I had know idea where that speedo came from, all I knew was that it was 20x30

[Mtsurfposse]

Couldnt post two pics in one comment section? my bad, I didnt wait

[jbell959]

The gears for KM and Miles are not the same. I'm out of town for a couple of weeks so I don't have my notes, but there are a couple of different gear configurations for the KM speedos. If you count the number of teeth on the center gear and reach out to the guys at odometer gears they can tell you what primary gear you need

[Mark Salvetti]

This eBay store sells a bunch of different odometer gears and conversion kits. Probably some clues in here.
https://www.ebay.com/itm/275244667969?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DGf8YQnVQQS&sssrc=4429486&ssuid=atRuabx4SI-&var=&widget_ver=artemis&media=COPY

Mark