[67Slider]

My speedo was jumping but it was because the driven gear had a chip in the input end and was slipping. I took it out and tested it with a drill and it worked fine. I tested a couple of speedo's while I was at it. Before you buy some drive gears and driven gears let me know what you need. I ended up buying several gears until I found the right combo. I have an orange (8 tooth)drive gear and a 20 & 21 driven gear.