[kerst]

During the past month I worked on the sheaves. They are the same size for the boom hoist and for the boom tip, 22 sheaves total. The difficulty was reproducing the spokes. After a couple of trials I figured out a way to make them. Basically there are 3 parts, the outer part, the spokes and the center core. I made the outer part from brass tube.This was pretty straightforward. The spokes were very labor intensive. I made them from 1/16” brass sheet, turned them to size and then milled the spokes out, 4 at the time. Then I soldered the parts together in a simple jig and finally finished them on the lathe in specially made chuck.









Kerst