18-03-2020, 07:03 PM
I made up 2 new keys today from 3/16" Ground Stock flat bar. Fortunately the key way in both the shaft and hub were in good condition. As best as I could measure the root radius machined in the shaft is 1.5" radius x 0.250" deep. I made the length 2 3/4". The key way in the hub is 1/16" therefore I made the key height 5/16" less 0.010" to make sure the key does not hold the hub off the shaft when tightened.
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