King pin - fixed vs sliding

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hair bear
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King pin - fixed vs sliding

Post #1 by hair bear » Mon Apr 05, 2021 11:18 am

Is there a logical reason that UK diggers tend to have sliding backactors with vertical stabilisers, but US models seem predominantly to be a fixed post and folding stabilisers? :think:
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Jeremy Rowland
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Re: King pin - fixed vs sliding

Post #2 by Jeremy Rowland » Mon Apr 05, 2021 5:16 pm

hair bear wrote:Is there a logical reason that UK diggers tend to have sliding backactors with vertical stabilisers, but US models seem predominantly to be a fixed post and folding stabilisers? :think:



Sliding post is much better, it enables you to move the arm across as opposed to having to try and line the machine up with a trench; early in Hymac's history, part of Peter Hamilton Equipment, they were official distributors for Wain Roy machines that were being built at Prees in Shropshire, these machines were an American design with a fixed post and fold down stabilisers but proved to be unpopular because they were fixed post.

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Re: King pin - fixed vs sliding

Post #3 by essexpete » Mon Apr 05, 2021 8:58 pm

Centre post better balanced and more efficient for 180 diggingoading but I would guess the UK (and perhaps Europe) had a need for more flexibility with tight construction sites and narrow roads. The TLBs in Africa tend to be centre mount as with the American continents.


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