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QuattroKev
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25 minutes ago, Whoppa Choppa said:

Er, pretty much everything! Lift power good if that's all you want. While it lasts.

Not much has changed in 35 years then. I had an early one from Gordon Hoy when he made them in Devon. He got the basic drawing by projecting a photograph and getting the basic dimensions from that but the proportions for the rams  meant the crane didn't hackle as well as the original. The main lift ram was single acting but the quality of materials must have been lacking as to vent the small amount of oil that seeped past the seal there was a small hole at the top of the stroke through which there was a spurt of oil if you went to full lift.

 

Because the main lift ram was over sized it could lift a lot close in, probably good for arb work where you just wanted to get big logs off site but  the lack of coordination between the functions meant productivity wasn't up with the Cranab and FMV I owned (and still do), not helped by the cheap and stiff spool block.

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