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Post by lowcoal16ru on Mar 18, 2012 22:05:56 GMT -5
Hey just wondering if anyone has worked around the 101 or 102 Jeffrey dresser line of continues miners
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Post by John on Mar 19, 2012 6:03:42 GMT -5
Worked on the 120HR and 120's, basically the same machines but the HR was heavier to cut rock.
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Post by lowcoal16ru on Mar 19, 2012 8:53:06 GMT -5
I was mostly wanting to know if the jeffreys were a pretty good machine I was thinking about trying one in low coal right know iam mining with conventional equipment
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Post by John on Mar 19, 2012 9:22:38 GMT -5
From my point of view as an electrician, I much preferred working on the Heliminers as against Joy's , less to go wrong from the electrical view point.
Reliability, I'd say they were a far better machine than either the Joy's or Lee Norse miners.
My first introduction to Heli's was at Boulby Potash mine in North Yorks, then in coal in Australia, very reliable machines and high production levels.
Last ones I worked with were in 1997 at Angus Place where they were used for development of the longwall gate roads and faceline.
I'm not familiar with the models you quote though, just the 120's and 120HR's.
I think even the mechanical fitters on this site have praise for the Jeffrey Dresser Heliminers.
I have not worked with anyone who liked the Lee Norse, mechanically they were a failure, and Joy CM's, in my opinion, were too over complicated.
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Post by lowcoal16ru on Mar 19, 2012 9:57:30 GMT -5
I agree with you I've worked on joys for a while to many moters to go down right now I have a joy 16ru cutter but the last one built was in 1978 but it is good for mining lowcoal my mine is only 32" the 102 Jeffrey is built for 30" coal and only has 3 moters
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Post by John on Mar 19, 2012 12:30:56 GMT -5
Too many motors, more to go wrong and cause stoppages.
The Joy 10SC had two traction motors, one pump motor and one conveyor motor. The Noyes Hydocar had one pump motor and everything else hydraulic, very reliable shuttlecar.
Even the Joy range of shearers has a load of motors, one on each ranging arm, pump motor, traction motor. But I see the DBT/Bucyrus/Cat Electra series of shearers now has multiple motors.
Days were, the only shearer with more than one motor was the German Eickhoff.
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