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Menzi Muck A91 4x4 Plus Excavator

Maker:  Ros
Model No:  1824
Scale:  1:50
Review Date:  December 2010

Ros Index
Earthmoving Equipment Index

Cranes Etc Model Rating
Packaging   (max 10)7
Detail   (max 30)24
Features   (max 20)17
Quality   (max 25)18
Price   (max 15)11
Overall   (max 100)77%


The Menzi Muck A91 4x4 Plus Excavator.
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The box.
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Excellent detail inside the cab.
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The stick is telescopic.
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Chunky wheels.
Reaching up.
Loading onto a trailer.
Menzi Muck AG is a Swiss manufacturer of excavating equipment.  It makes machines which are unique in their design and the A91 is one of the largest in the range.

This model is an update of a previous version, and is of the 4x4 Plus which has four wheel drive with additional sub-axle steering.  It is made by Ros and it is an exclusive model for FM Modellbau of Switzerland.


The model comes in a windowed box, and it is packed within an expanded polystyrene tray and secured by ties.  There were no defects or missing parts on the review model.

There are no details about the real machine, or instructions for the model.  However there is no assembly required.  A small collector car was attached to the model giving its serial number in the production run.


There is no particular detail on the underneath of the model.  The rubber treaded tyres are good and the wheel hubs are nicely detailed.  They are mounted on articulated outriggers which have rather large rivets at the hinge points and smaller friction rivets would have looked much better.  Most of the cylinder pistons have hinged protection covers.

The cab is very detailed.  The seat and controls are rendered very well and in addition to the door mirrors and wipers there is a tool box at the front and the exhaust is nicely formed.  The windows are particularly good with realistic looking seals around the edges.

The boom and stick are metal and it is good to see the plastic cylinder jackets have a very good colour match.  The hydraulic lines are all modelled to represent hoses or metal lines as applicable.  The stick has a lifting eye painted red which is a nice detail.

The bucket is a metal part.


The rear outriggers have legs with pads on the end, and there is articulation so the whole outrigger can move sideways and up and down.  The pads can be separately lowered.

The front outriggers are also articulated in two directions and the wheels have additional sub-axle steering which has a good range of movement.

The engine cover behind the cab lifts up so the engine can be seen although the exhaust pipe prevents the cover lifting right up.

The cab rotates.

Both the boom and stick can be raised and lowered with a good range of movement and the stick is telescopic.  The bucket angle can be posed in two directions side-to-side.


The quality is very good with little plastic used and the paintwork and graphics are of a good standard.


The model is reasonable value for the size and quality offered.


This is a good quality model by Ros and it replicates the unusual functionality of the real machine very well.  It poses well with other models and is recommended.


The model appeared in October 2010 and was an update of a previous version.  The production run was 1000 models.  A variant model of this machine is reviewed here.
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Four large powered wheels provide the traction.
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Steering arrangements allow very sharp turns.
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Really good hydraulic line details on the boom.
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The bucket rotates.
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Loading a tipper.
Opening engine cover.