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Terex Demag AC100/4 Mobile Crane - Kavanagh

Maker:  Conrad
Model No:  2104
Scale:  1:50
Review Date:  May 2010

Conrad Index
Mobile Crane Index

Cranes Etc Model Rating
Packaging   (max 10)6
Detail   (max 30)23
Features   (max 20)15
Quality   (max 25)19
Price   (max 15)10
Overall   (max 100)73%


The Terex Demag AC100/4 ready for the road.  Here it is not carrying any counterweight on board.
Terex style box.
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The various model parts.
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Rear view with the counterweight removed.  The graphics are applied even to the inner parts of the body.
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The crane paired up with a Nooteboom ballast trailer in Kavanagh colours.
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More excellent graphics.
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Rigged and ready to lift.
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The fly jib attached to the boom.
Kavanagh Cranes is the largest crane hirer in Ireland and operates a fleet including city cranes, self erecting towers, and all terrain cranes up to 400t capacity.  This model is in their corporate livery and represents a real crane in their fleet.

The Terex Demag 100/4 is nominally a 100 tonne capacity mobile crane.  The main boom can be up to 50m long and a fly jib can add up to another 27m of length.  It can be rigged with a maximum of 26 tonnes of counterweight.


The model comes in standard two piece expanded polystyrene trays held together by a picture sleeve which has a photo of the real machine, but no other information about it.  The review model had no defects or missing parts.

There are no instructions provided with the model but assembly is straightforward for anyone but a complete beginner, and takes little time.  An instruction leaflet would have been a good addition nonetheless.


The carrier is typical of Conrad.  Robustly made and with a reasonable level of detail, although not as much as provided by some other makers.  Underneath there is little detail to speak of on the chassis.  The wheels have good all terrain tyres mounted on standard plastic Conrad hubs.  The outrigger beams are made of tough plastic and the pistons are standard screw threads which is a method gradually being taken over by more realistic looking pistons on other models.

The driving cab has wing mirrors which the collector has to attach, and there are good orange beacon lights on the roof.  The headlights have nice plastic lenses and there is a loop for tying up the hook during transport.  Interior detail is fairly basic.  Behind the cab, the carrier deck detail is good, with diamond plated surfaces and a nice exhaust system.

The crane cab has plastic grab rails and inside there is a simple rendition of the operator's seat and controls.  The rest of the body is cast well, with some metal hand rails and the counterweight slabs are detailed with lifting points which could be used to attach chains, except for those on the cheek weights.

The boom sections are metal and they model the simple lines of the real crane well.  There is a spooling drum on the lowest section.  In the boom head the pulleys are plastic, but separate, so they are free rolling.  The fly jib has a convincing metal lattice work section and the swingaway part is plastic although the colour match is excellent so it is hard to tell.

A single pulley hook is provided, and this has nice red and white stripes.

The Kavanagh livery is reproduced beautifully on the model.  The graphics are excellent and are a very good copy of the real machine.  Particularly pleasing is that every boom section has the Kavanagh name printed on it, and this applies to the swingaway jib also.


The steering works very well and consists of linked front and rear pairs of axles.  This means crab steering can be simulated, but not all the steering modes of the real crane as axles 3 and 4 are not independent.

The outrigger beams are two stage and can be pulled out to any extension and the pads lowered.  They can successfully hold the weight of the crane. The crane cab tilts smoothly to a good angle.

A good feature is the counterweight which can be attached to simulate different configurations, including some pieces being loaded on the carrier deck to even the load on the wheels during transport.  This is not fully implemented though, as although some weights can be carried above the front two axles, none of the slabs are cast to enable them to be carried properly on the rear end of the carrier.

All the usual crane functions work fine with the crane rotating and the boom able to be set at a reasonable angle, and the boom cylinder is stiff enough to hold a pose.  The five section telescopic boom can be smoothly extended to full length and each section has the usual locking mechanism to prevent the boom retracting.

The fly jib is pinned to the boom head using small plastic bolts and can be fixed to be straight, or at one of two offset angles.  The swingaway portion can be pinned into position or left retracted so the fly jib provides a variety of display options.

The winch is operated by turning the winch drum directly and it has enough friction to hold a reasonable load.


The model is typically well made and strong.  The paintwork and graphics are very impressive due in part to the outstanding Kavanagh livery.


This crane is fair value for a four axle crane.


This model is of typically robust Conrad quality, and the quality of the paintwork and graphics enhances the model as the Kavanagh livery is rendered in excellent detail.  It looks great and the limited numbers made enhance collectability.  It is recommended.


The model first appeared at the end of 2008 in Terex colours.  A version in Grohman colours (silver) appeared at the Nuremberg Toy Fair in 2009 and went on sale later in the year.  The Kavanagh version appeared in April 2010 and was made in a run of 150 models.  A version also appeared in Schmidbauer colours in 2010.
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The model inside the box.
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Front view.  The steering angle is very good.
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Excellent graphics.
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Loading up the counterweight.
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Tilting cab.
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The Kavanagh name on every boom.
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Lifting a beam from a Dennison trailer.