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Rank: Advanced Member
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Joined: 6/13/2004
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Location: Bendigo - Victoria - Australia
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Gents,
I have just purchased the Conrad LG1750 - Nordic
What Boom Set up, will give the Max Lift?
Regards
James Muldoon
From the Land Down Under
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The Liebherr brochure doesn't list a configuration for the max capacity of 750 tonnes. It lists a capacity of 670 tonnes for S-boom at 6 meters with a boom length of 21 meters. That appears to be with the A-frame without the superlift. The max capacity of 750 tonnes must be with the superlift boom. A boom of 21 meters at 1:50 would be 16.5 inches (42 cm) of boom.
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Rank: Advanced Member
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Location: Lincolnshire
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I don't think the Nordic LG comes with the heavy lift head for the main boom. But I could be wrong - I don't remember what all is included in the box.
*EDIT* Take that back. I found a photo online of the box contents and it looks like the parts are included for the heavy lift.
Paul R
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Set up for the LG1750 to lift its nominal capacity= 35m main boom, 31.5m derrick mast, 220t on the crane with 400t suspended ballast @ 20m radius, 750t @ 8m.....now that i'd LOVE to see  . With the model, boom root, 14m section and then the heavy head (one the luffer attaches too). And don't forget that with the derrick mast only half rig the outriggers. I'm working 20miles up the way from Whytes yard and there LG is at home. I must really go down and see it. Gaz
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Rank: Advanced Member
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Location: Bendigo - Victoria - Australia
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Paul,
I noticed in Brochure - Max Capacity 750 t at 8 m Radius S2DB - System with S 35m
I Understand what the S, D & B Mean, but unsure what the 2 Means
Regards
James Muldoon
From the Land Down Under
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I'm not sure what the 2 means, i'm working with our LG1550 as we speak, give me half hour and i'll check the 1550's manual. The 1750 and 1550 have the same designations for there boom systems.
Gaz
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Gaz,
From my understanding, the LG1750 in S2DB Format the hook Block would be Reeved with 2 x Winches. (WI 1 & 2)
In a 1:1 Machine would there be a Setting in the Crane to enable 1 x joystick to operate both winches?
Regards
James Muldoon
From the Land Down Under
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Rank: Advanced Member
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You would need both winches (double hook block) to reach that sort of capacity. I also think that the normal roller set would not have enough sheaves to reach the amount of lines needed for 750t so more than likely a special attachement will have to be fitted, this 2 could mean a 2nd roller set will needed.
Gaz
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Well, I've got an older version of the LG1750 brochure where it shows the 750t capabilities in the charts but stated that this was preliminary. I've downloaded the latest version and it does not show 750t anymore, but has a note at the bottom: "Lifting Capacities >600t with 750t equipment". There are *'s against all the 600t figures in the chart pertaining relating to this statement. So my uneducated guess is that there is special equipment needed.
I was just about to think about re-rigging my Nordic LG!!
Paul R
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Gaz wrote:............35m main boom, 31.5m derrick mast, 220t on the crane with 400t suspended ballast @ 20m radius, 750t @ 8m.....now that i'd LOVE to see ..............Gaz I know it is not the LG1750 but thought you might like this:    Sorry to veer off topic a little! Paul R
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Rank: Advanced Member
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fantastic Paul, I remember those pictures.... that's the only real setup for that crane is with the derrick and ballast tray, I wish I had them for my LTM 1800
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Location: Bangkok
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Rank: Advanced Member
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Location: Lincolnshire
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Your LG1750 set up looks great Tong! I see I'm going to have to rob a heavy lift head from somewhere now Paul R
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That is very nice Tong! I would like to configure mine that way too.
Mark
Mark L.
It's what you learn after you know it all that counts
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going a little off the subject but GUZ, i wish i could get into the heavy lift cranes like you guys operating them, but there is not too many comps in my area. 
SOMETHING IS BETTER THAN NOTHING. http://s1185.photobucket.com/home/vipyfz2008/indexhttp://www.youtube.com/user/vipyfz?feature=mheeluis.
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Paul R wrote:I know it is not the LG1750 but thought you might like this: Looks awesome mate, but I'm still in the process of convincing my boss to get our LG done, now that would look amazing . Oh and I got to Whytes yard today, what a amazing machine, photos will follow tomorrow. Gaz
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Rank: Advanced Member
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Location: Bendigo - Victoria - Australia
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Tong,
Where did you get the Reducer?
The Nordic doesn't come with one.
Regards
James Muldoon
From the Land Down Under
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Location: Las Cruces, NM
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Jim_sparky wrote:Tong,
Where did you get the Reducer?
The Nordic doesn't come with one.
The only availability I know of is if you purchase the LG 1750 SLH version. Darn, buy a whole crane model just to get one boom section.....
1:1 or 1:50, I am still in awe. 
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Location: England
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The boom reducer (part 99921/0) and windmill boom head (part 99922/0) will be available soon as separate parts in RAL 1007 (Liebherr). Ian
http://www.CranesEtc.co.ukhttp://www.Twitter.com/CranesEtchttp://www.YouTube.com/CranesEtcTVCranes Etc on Facebook
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Location: Lincolnshire
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I got sent some interesting information about the LR and LG 1750: Quote:"But the 1750s definitely are able to lift 750 tons
Actually even beyond. Felbermayrs LR was tested with outriggers, full ballast, longer derrick and heavy lift head with 1000 tons on the hook
Reason was it has had to do a lift of a 660 ton reactor at large radius
There is a special department at the liebherr engineering that only deals with the so called “Sonderlastfälle” = special load cases.
Before you do lifts like this, you gotta get liebherr permission, also because of insurance, and these guys do the maths for it. With lattice booms its not unusual. With teles it almost never happens
Interesting detail: The LR needs to have the bolt-on outriggers on for heavy lift, whereas the LG needs to have its outriggers telescoped it. Reason is, the LR needs every footprint it can get, the LG needs structural stability and the outriggers are stronger while shoved in" Paul R
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