Czech_Made
ArboristSite Operative
The log moves up and down on 1 inch ACME threaded rod while 1" tubes slide in and out. This part works great, I was afraid it will need too much force to move, but it lifts with ease and there is no need for locking down.
I was forced to rebuild the log lift. What happened is a big log actually bent the guide tubing on one side and the log rest was not parallel anymore. I was ready for it, planned the improvement for a while, and now I was forced to finally implement it.
I went with two lifting 1" acme bolts, two ACME nuts and two sprockets paired by 40 roller chain. See pictures. I also had to make hand wheels few inches smaller diameter but all in all the whole upgrade was just matter of cutting and welding.