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Subject: 
Re: JCB JS220 Excavator
Newsgroups: 
lugnet.technic
Date: 
Fri, 28 Nov 2003 10:10:28 GMT
Viewed: 
4167 times
  
In lugnet.technic, Ross Crawford wrote:
  
Hmmmm you may be right - I’m still disappointed you didn’t implement automatic bucket release though ;)

One of these days :-) It is probably doable with the small pneumatic cylinder.

   And have you seen those new mini excavators that have the ability to move the dipper assembly sideways? they have a sort of parallelogram linkage and another hydraulic cylinder. I should try yo get a pic of one.

I came across this when building the JS70 model on my website, the datasheet mentioned a “parallel offset boom” and I had no idea what it was until I asked someone. It is indeed as you describe, and apparently avoids the need to constantly reposition the excavator when digging trenches etc. Also good for digging up agaist walls and so on.

   Also I saw the other day a JCB backhoe with an extendable dipper - it was telescopic, with the hose for the bucket & bucket release doubled back inside it. I’m not sure what it is intended for, but this guy was just using it when he needed to change the backet, so he didnt have to have the alternate buckets so close i guess.

Interesting, I saw exactly one of those a few weeks ago too, prior to this I had never seen one, perhaps it is a new thing for this type of machine? I didn’t see the operator do anything fancy with it either.

Jennifer



Message is in Reply To:
  Re: JCB JS220 Excavator
 
(...) Hmmmm you may be right - I'm still disappointed you didn't implement automatic bucket release though ;) And have you seen those new mini excavators that have the ability to move the dipper assembly sideways? they have a sort of parallelogram (...) (20 years ago, 27-Nov-03, to lugnet.technic, FTX)

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