Home Welcome Reviews Editorials/Press Reference Shopping Mall Links Photo Archive Search Contact
Spierings City Boy Mobile Crane

Maker:  WSI Models
Model No:  52-2021
Scale:  1:50
Review Date:  June 2020

WSI Index
Mobile Crane Index

Cranes Etc Model Rating
Packaging   (max 10) 8
Detail   (max 30) 28
Features   (max 20) 16
Quality   (max 25) 21
Price   (max 15) 11
Overall   (max 100) 84%


Spierings City Boy Mobile Crane Video [Youku Video]
Click to see large photo
Spierings branded box.
Click to see large photo
Highly complex model.
Click to see large photo
Very detailed chassis.
Click to see large photo
Distinctive cab. The seat can be angled for driving or crane modes of operation
Click to see large photo
Stands wheels-free.
Click to see large photo
Fold down ladder.
Click to see large photo
Profile view.
Cab rail and cable rack on the tower.
Detailed trolley and hook.

The Spierings City Boy SK487-AT3 is a 3 axle machine designed particularly for city centre applications.  It is capable of being entirely electric powered, and it has a single cab used for both road and crane driving.


The model comes in a Spierings branded box and inside it is packed within expanded polystyrene trays. Although the model is secured to the bottom tray with twist ties, they are soft and easy to remove. 

The review model had no missing parts. The jib assembly rope is reeved in the factory, but it appeared not to run on the correct route on the review model.  However, re-reeving is fairly straightforward.

A comprehensive manual provides information about the real machine.  It has an illustrated parts list and many colour photos describe the assembly. The review model was provided with the manual electronically.

The model is a complex piece of model engineering.  As the manual advises, care is needed when handling the model.


The underside of the carrier is very detailed.   The steering, suspension and transmission parts are modelled and there are also many other details in the casting.  The tyres have a decent tread pattern, and the wheels are detailed.

The carrier deck has diamond plated texturing. At the front there are small round headlights and sharp graphics and at the rear there is a place for a number plate.

The large cab has a detailed interior and a computer monitor is visible.  The mirrors are metal and the windows have the seals indicated.  The body has City Boy graphics and there are holes in each side to be able to operate the winches with a supplied key.  Tiny beacon lights are modelled and behind the tower the pulleys for the tower raising system are modelled.

The outriggers have metal beams with smooth faced pistons, and the pads can be adjusted for transport mode.  They have sharp chevron graphics. Four metal spreader plates are included.

The tower is a three stage telescopic structure.  It has a lattice cable rack with a soft cable run, and because of the small scale the cab rail is modelled as solid parts to be fitted by hand rather than telescopic as on the real machine.  A pin is used to lock the tower upright, but it is a little large and extends beyond the footprint of the model in travelling mode.

At the top of the tower is the cab winch and this connects to the cab.

The jib is metal throughout.  It is fully triangulated and mechanically complex. The assembly ropes, cables and ties are made to tight tolerances to enable a good looking jib profile which was very good on the review model. Small metal pulleys are used throughout.  The real crane has a telescopic end section which has been provided as a separate part because of the difficulty in modelling a telescopic section in this scale.  It has a tiny beacon light at the tip.

The trolley is metal, and is more detailed than you usually see, and both it and the metal hook for it have tiny metal pulleys.  Ropes to move the trolley can be fixed to enhance the accuracy of the appearance although the system is non-functional out of the box.

A solid metal load block is also included.


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

The outriggers can be deployed and are strong enough to support the weight of the model when erected, and they are reasonably straight only losing straightness a little under full extension. 

A ladder on the crane body can be folded down.

The crane rotates smoothly.

A key is supplied to operate the various winches, and they have positive brakes. 

The cab can be raised and lowered up and down the mast.  The seat in the cab can be rotated from the road driving to crane driving positions.

The jib can be unfolded and either posed horizontal or luffed at an angle just like the real crane. 

The hook can be raised and lowered, but particular care is required to maintain the hoist rope on the winch drum, guiding it by hand if necessary.

The trolley can be positioned by hand. However, if the ropes from the trolley winch are attached it becomes difficult to move the trolley.  A skilled modeller may be able to convert it to a working trolley movement system.

The system for raising the tower and the pulleys for that function are modelled, and some rope has been reeved up in the factory although it was not wound on all pulleys on the review model. 

The model appears to have a main focus of being displayed fully erected.  However, it is possible to produce a reasonable transport mode.


This is a high quality technically complex model with a high metal content.

The paintwork is very good and the graphics are excellent.


It is good value given the complexity and size.


This type of machine is a real challenge to model accurately in 1:50 scale and WSI have made a very good job of it.  There are some inevitable compromises but the focus on high detail has produced a very authentic looking model.


The model first appeared at the BAUMA exhibition in April 2019 as a prototype, and became available in April 2020.

Click to see large photo
The parts out of the box.
Click to see large photo
Very good steering.
Click to see large photo
On the road.
Click to see large photo
Details at the rear.
Click to see large photo
Fully erected.
Click to see large photo
Geometry is very good.
Crane is mounted off-centre, just like the real crane.
Cab raised to the top of the tower.
Fully erect with the jib luffed.