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Interesting bit of fabrication on those dipper booms. I'm glad you're making good progress as usual because I'm anxious to see how the dipper is located in the main jib so that it can slide and swivel while maintaining good contact between rack and pinion No rush, because I like to try to imagine how I would do it, then see if I was right MikeP.S. Actually, I think I've worked it out except for some details
Wow, what progress!It's really interesting to see people develop models straight from the real thing.At this rate, you'll be starting the Stanley this weekend. Right? Enjoying the show!
Well, I was close enough to deserve the I treated myself to after dinner, but I assumed there would be some sort of roller guides on the top of the boom instead of the sliding plate. I guess the weight of the dipper arm would be almost enough to keep the rack and pinion engaged, so there perhaps wasn't too much pressure on that plate At first I thought the loading on that axle would be too great for it to be the pivot point, but then I realised most of the heavy lifting is handled by the chain and the main jib.My late father worked for a year in the Ruston Bucyrus factory as part of his engineering degree course way back before WW2, on dragline excavators I believe. He taught me a fair bit about machinery maintenance at 1:1 scale, although his career was in civil engineering. I have great memories of helping him strip down a couple of tractor engines for a de-coke.
You don't want it to look too pristine. A working machine after all.
Wow.I'm beginning to understand the power of your cookies. Sugar = energy.Is one of the ingredients caffeine as well?What are the rivets made of?