Crank Flywheel Nut 10mm by What Pitch?

[viclioce]

Are all the flywheel nuts which mount it to the crank a 10mm by 1.0 pitch or are they a 1.25 pitch? It looks fine threaded enough to be a 1.0 pitch. I need to rethread the end of the crank because some PO previously hit the end with a hammer and mushroomed it a bit. Not a lot, just a bit, so I can't get the nut threaded on. I've already filed a chamfer into the end of the crank but need to get the correct sized die to re-run the threads clean. So, 1.0 pitch or 1.25 pitch? The manual only says 10mm but not the pitch. ; D Victor

[Dale]

The pitch is 1.0

[viclioce]

Thanks Dale! I thought so but wanted to be sure. I need to purchase a die this size. ; D Victor

[thrownchain]

When you buy the die, get a metric thread gauge also. They do come in handy, and aren't expensive.

[viclioce]

I didn't end up buying a die or a thread file. The end of the shaft was a bit mushroomed. So I filed a chamfer into the mushroomed end and just let the nut grab threads a bit lower down the shaft. Before & After pics. ; D Victor

[Bruce Young]

Good job Victor you made it work with what you had. I tried to find a die a couple years ago for cranks and it took a while on the web, but I might suggest its good to have one in you tool box when you need it next time and its good to clean threads with as well. Bruce

[viclioce]

Thanks Bruce! I'll be on the look out for one. & will buy one when I find one. I may have to go down to the big city to find it tho. Santa Fe still suffers from small town tourist trap mentality! ; D Victor