Haven't posted here in a while..anyway, I was invited by cranes inc to their yard to take some pictures of the LTR1120 they got not too long ago. This was actually the first LTR1220 to come to the United States but it was damaged at the port and the delivery was delayed. The crane was parked in a tough spot to get pictures so it was moved to wherever was best for us, what a convenience haha. only 14x hours!

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-Vinny

http://www.heavytruckphotos.com/

Great shots!
Surprised we didn't see one of these in model form this year, maybe at conexpo.
LUCKY!

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Brandon

my youtube channel
My Facebook Page

Nice work Vinny! Definitely a tight area to get shots.

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Daily Diesel Dose.com| All Ready Mix.com | Plowsite DOT Thread |
If your only contribution is complaining, please don't contribute!

Great pictures....that LTR is a whopper !

Indeed, very ggo work. I like the angles and the way you are taking your pictures.
Nice!

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Playing with toys since 1970, now building them.

Nice Pictures you got there from Crane inc. I dont want to be mean, but those second winch drums why? are those American/Canadian so lazy that they need two winch lines for 1 crane?

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Mammoet- Size does Matter.

Dafgek

Sure

In Europe about 85% of AT cranes have a 1 winch with either a 1 sheave (hanging or two lines of 3) or have an 3 sheave block (hang most of the time on 2 lines or more). With that block the job is being done. For example the Liebherr LTM1220-5.2 have a cable length of around 250 meter that is good to have a 3 sheave block on 4 lines with 60 meter main boom.

Here in the U.S.A/Canada about 90% of the canes that i see have two lines 1 single line and a 5 sheave block hanging on 4 lines. When they on on the job they use 1 of the two winches where by the other winch hangs there doing nothing. when telescoping out both lines must be extended but one one in use (most of the time the jib ball hook). When a truck with two winches must put on a jib they take the single line and leave the 5 sheave block hanging just being there no usage. When working with jib at angles the other hook can/could damage the boom. ( yes i have seen it with my own eye what damage it can cause). There for some operators take the other hook, having to do double work. would it be much easier working with 1 line rather then two? i do see a point in having two lines where by 1 is only in use? for crawler cranes it is different. Understood?

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Mammoet- Size does Matter.

Dafgek

Ok I understand where you are coming from with regards to larger AT's say 100t. and up or on a crane that stays on a single job for a long period of time and it has a specifed or typical day to day duty that determines what hook is used. Where it is most common and or useful to see two winches rigged in is on a "taxi" crane (Can/US)70t. and less as it is often that these cranes are not on one particular job long enough to pick either the ball or the block, so both are left on. With taxi cranes, there is a much thinner profit margin so time is money and if you were to go to 3 or 4 different jobs in one day and had to re-rig at each job that costs precious time and obviously profit. Again on "taxi" crane work, its common to tail your own load, so both lines are used, not saying that its right, but its done.

Totally agree on the two winches and the damage, I've seen it both ways, Ops override the A2B and pinch off the ball using the block and booming down, snap tie-backs or worse (bent/buckled boom) when booming up using the ball. The other point I agree with when using a jib and you have the block haning there unused, it reduces crane capacity, and when this is overlooked in the lift calcs, it leads to tip-overs. So there are valid arguments IMO for both single and dual drums, I was just a little off put by the lazy comment as I dont think thats a fair assessment. I appreciate the manner in which you answered my query as it didnt turn into a pi$$ing match. These are good conversations because it allows people to learn and understand why things are done the way they are in differnt countries etc.

Regards, craneman

P.S. Cat966f, sorry to hijack your thread and thank you for the pictures, very cool.

Ah so they do account for the second winch in the cw calc. I was going to mention that as a + but I wasn't 100% sure, thanks for the clarification.

Wish we would get one of these, would come in handy on the pipeline job we are doing.

Great pics, will have to check out the vids

Jason

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NIkl Scale Models