loose components somehow stripped some of the interior threads from the drive shaft of my motor, so as i tightened the nut to hold the 10 tooth sprocket, the nut would pass from the threads to the stripped section, not truly tight.
i found this mated lock washer on mcMaster.com
http://www.mcmaster.com/#91074a133/=x7idhz
the two halves together are aproximately 1/8" thick, and keeps the nut out on the "good" threads. the opening in the sprocket chainwheel is .99" or 25mm- so this item fits and provides locking, and so seems better than "just" dropping a washer in there.
i could not find a replacement nut.
both a 3/4" and 18mm drive fit the nut, the shaft is close to 13mm or .51"
-the thread pattern is odd, i tried a bunch of hopefuls, to no avail.
$10ish for 10, so sort of expensive, but i plan to keep building so i bet i have this issue again...
i found this mated lock washer on mcMaster.com
http://www.mcmaster.com/#91074a133/=x7idhz
the two halves together are aproximately 1/8" thick, and keeps the nut out on the "good" threads. the opening in the sprocket chainwheel is .99" or 25mm- so this item fits and provides locking, and so seems better than "just" dropping a washer in there.
i could not find a replacement nut.
both a 3/4" and 18mm drive fit the nut, the shaft is close to 13mm or .51"
-the thread pattern is odd, i tried a bunch of hopefuls, to no avail.
$10ish for 10, so sort of expensive, but i plan to keep building so i bet i have this issue again...
