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Liebherr MK 88-4.1E Mobile Construction Crane

Maker:  Conrad
Model No:  2123/01
Scale:  1:50
Review Date:  December 2022


Conrad Index
Mobile Crane Index


Cranes Etc Model Rating
Packaging   (max 10) 8
Detail   (max 30) 24
Features   (max 20) 16
Quality   (max 25) 19
Price   (max 15) 10
Overall   (max 100) 77%

Footnotes


Liebherr MK 88-4.1E Mobile Construction Crane Video
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Special Edition style sleeve.
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On the road.
 
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Attractive colour scheme.
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Tower being tilted to vertical.
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It is a big model.
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Fold down deck access ladder.
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Cab elevated to the top of the tower.
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Profile view.
Excellent straight jib.

The Liebherr MK 88-4.1E Mobile Construction Crane is a 4 axle machine with a maximum lifting capacity of 8 tonnes.  Depending on configuration it can lift 2.2 tonnes at the maximum radius of 45m, and the maximum hook height is just over 30m.  The jib can be angled up to 45°.

This is an updated version of the earlier MK 88 model by Conrad.  It is a Special Edition model presented at Bauma 2022.

Packaging

It comes in a higher quality Liebherr branded box with a Special Edition cover sleeve. Inside it is packed within black foam rubber. 

The review model had a missing Liebherr flag and appears to omit the tower telescoping winch.  It was also supplied with wrong colour sign boards for the jib - grey instead of blue.  Conrad later supplied correct colour sign boards and the missing winch part, but it appears the Liebherr flag is not intended to be supplied with this version of the model.

An updated Building Instructions booklet is provided which is printed in German and English.  It has an illustrated parts list and is in colour. 

There are a few small parts to fit to the model.  Just like the real crane, it is complicated so it takes a while to erect it fully but it is straightforward if the instructions are followed.  It is robustly made but care needs to be taken not to force any parts during erection or more particularly when folding it up.

Small temporary clips are used to prevent lines from getting tangled up when the model is unpacked and assembled and this is certainly a much better solution than the fiddly tape often used on other models.

Detail

There is little detail under the model with the steering components being purely functional.  The tyres are good and the wheel hubs are detailed.

The driving cab's details are simple and represent the real crane's uncluttered appearance.  Door mirrors attach to the cab and interior detail is reasonable.  The outriggers have metal beams with visible screw-threaded pistons and plastic pads.  Four plastic outrigger pads are supplied and these can be stored in holders on each side. 

A neat fold down ladder provides access to the carrier deck and crane body.  The carrier deck has good diamond plate surfacing and at the rear an optional tool carrier can be fitted.

The crane body is a good casting with panel doors and handles detailed and the lines of the body are only broken by small access holes for the keys to turn the winches.  A metal handrail and optional additional ballast plate are parts to be fitted.  The handrail's are metal.  The tower tilting mechanism is in place although it is not intended to be reeved, and there are metal pulleys throughout on this model.

The mast is a telescopic lattice.  It is well made and there is a new style rail section attached to the lower part.  The top section has to be fitted when the tower is extended.  The cab is an updated design with an opaque windscreen.  A new part on this updated model is a metal cover for the cab raising winch.

The jib is metal throughout and is mechanically complex.  Conrad have done an excellent job at making the jib, the hinges, and the pendant connections to fine tolerances so that it is geometrically correct when erected.

The trolley is plastic, and both it and the metal hook have tiny metal pulleys. 

Features

The carrier has independent steering on each axle so all modes of steering can be reproduced and the range of movement in the steering is good.

The outriggers can be deployed and are strong enough to support the weight of the model when erected.  The outrigger pads can be stowed or used as desired.

The ladder to the carrier deck can be unfolded, and the tool carrier can be added or omitted.  It is advisable to fit the optional counterweight to improve stability of the model.

The cab can be raised to the top of the tower using the winch, but the friction in the winch drum is not enough to hold the cab's position reliably.

It is possible to pose the crane as if undergoing the phases of erection although this cannot be carried out by operating the winches alone as various hand manipulations are required.  When the crane is erect it is stable, but the diecast metal jib means that it will not carry any significant load at radius before wanting to tip over.

Keys are supplied to operate the various winches.  The jib can be unfolded and either posed horizontal or at an angle to mimic the possibilities of the real crane. 

The hook can be raised and lowered, but the trolley function is not present and it has to be positioned by hand.  The trolley tends to slide down the jib if the jib is set a high angle.

Quality

Conrad have made a model of their typical robust quality. 

The paintwork and graphics are very good.

Price

The model is relatively pricey which reflects its complexity and features, and that this version is a special edition.

Overall

This model is an update of a model first released around 12 years previously.  The updates are relatively modest, but is is a smart looking model in the special edition colour scheme.

Footnotes

The model was a special edition first seen at the BAUMA exhibition in October 2022. 

 
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In the box.
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With care a very good travelling profile can be obtained.
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Underneath.
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New exhaust on this updated model.
 
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Tool carrier and wheel chocks at the back.
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Jib being unfolded.
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Latest cab design.
The jib sign boards should be blue and white on this version.
Jib luffed at 45° angle.