This is a crank I made for the leadscrew on my 7 x 14. I didn't want to modify the leadscrew, so I mounted the crank on the left side of the leadscrew. I made the crank from 1/4" thick aluminum and attached it to a 42 tooth browning timing pulley.
At some point, I will lash up a DC gear motor connected with a removable timing belt so I can also have a variable speed carriage feed. I don't expect, at this point to use the change gears very often, although I can easily remove the crank and revert to the change gears if need be.
In this picture, you can see a steel ring which was heat shrunk on to the hub of the gear. This will be engraved with graduations and numbers for a fine feed measurement.
Chuck
At some point, I will lash up a DC gear motor connected with a removable timing belt so I can also have a variable speed carriage feed. I don't expect, at this point to use the change gears very often, although I can easily remove the crank and revert to the change gears if need be.
In this picture, you can see a steel ring which was heat shrunk on to the hub of the gear. This will be engraved with graduations and numbers for a fine feed measurement.
Chuck
