Welder Dave
Senior Member
That video doesn't do justice to how big they are. Standing under the boom looking up where the hyd. cylinders attach is massive! About 7' wide or wider at the widest part. The cylinders are huge too! The two former Henuset pipelines 1900's both have Esco buckets with 4yd. tags on them. The other thing is they look extra long with all the sheet metal body on them. With the sheet metal removed they actually look fairly compact. Henuset took the sheet metal off and applied lots of yellow paint to protect them from the weather. Apparently it was common to blow hoses and it's not easy trying to bend the large hoses into shape to fit them.
They must have been somewhat popular to stay in production until 1990! Would be interesting to know how many were built. Henuset had 5 they bought at auction from the Alaska pipeline. Would be especially neat if they mounted the custom high walker 1900 up on the pipe supports to raise it another 10' high but I doubt that will happen. That machine was also converted to joystick controls instead of hand levers and pedals. I'd imagine the joystick controls had a long stroke with a lot of slop. The backhoe on my track loader is like that. You get used to it though. A little tricky trying to do precise movements.
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