Just thought I’d post a few pictures of my bantam on a CCKW
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Your arm strength is not supposed to hold any powered work being done. If it does, the clutches aren't adjusted correctly. It's all about leverage. The "clutches" look like and operate like oversize automotive brake shoes. Hand levers move the clutch shoes to engage the drums to provide working force, be it swing, travel, hoist, pull, or crowd. The hand levers have adequate leverage to fairly easily engage/disengage the clutch shoes past the over-center locking cams which hold the shoes tight to the drums doing the work. Success totally depends on the tightness of the shoes and the locking cams. (but no smart operator will ever remove their hand from the lever doing work, regardless)Wow! A cable controlled back hoe! Those were getting rare when I was a kid 50+ years ago! I'll bet they are a bear to keep in clutches!
The clutches would likely be either internal block clutches or exterior contracting band clutches, wither way, I would not want to have to keep them in adjustment. A lot of the 1930's-1940's cranes had those type, or some had mechanical dog cluthes. Probably the most critical parts will be the brakes, and again, they are likely the band type with linings. We had some BE 22B's that were from that era, and by the 1970's they were pretty much shot from a lot of heavy work done by them in the meantime. Amazingly enough, folks still collect 10B and 22B BE Cranes and shovels.Wow! A cable controlled back hoe! Those were getting rare when I was a kid 50+ years ago! I'll bet they are a bear to keep in clutches!
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