I'm working on a new counter design, one that uses spur gears rather than a chain. The counter will be legible from a seated position and uses commonly-available parts.

The main drive gears are replaceable in the event of wear or failure, although in their intended application they transmit up to 3 hp. I don't anticipate many failures due to stress.

It will require a bit more setup in fitting to the bike than the old JO counters, and therefore isn't as transportable from bike to bike, although the install is far from permanent.

Once I have a working prototype or CAD drawings, I'll let you know.

I'm throwing in the towel on the gear-drive design. Between the machinist and I, we've uncovered more weaknesses than strengths in this design, and rather than beat a dead horse it's time to quit.

Look for V2 once I get re-inspired