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Test drive: Roll-off container trailer from WSI in 1:50 Hitched


Trucks & Construction - epaper ⋅ Ausgabe 6/2019 vom 15.11.2019

The matching roll-off container trailers from WSI correctly follow the Palfinger crane hook arm attachment. The original for the first version is driven in Sweden …


Artikelbild für den Artikel "Test drive: Roll-off container trailer from WSI in 1:50 Hitched" aus der Ausgabe 6/2019 von Trucks & Construction. Dieses epaper sofort kaufen oder online lesen mit der Zeitschriften-Flatrate United Kiosk NEWS.

Bildquelle: Trucks & Construction, Ausgabe 6/2019

After WSI introduced models of the Palfinger crane hook attachment, including several different bins (issue 3-2018), it was a no-brainer that matching trailers would follow.

As is now common practice with the upper structures and trailers, the new model also has concrete prototype now. It was WSI’s overall goal to have a universally versatile, adaptable trailer in their programme. Basically, three versions are possible: a ...

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... two-axle, a three-axle with the standard double axle. A ‘Wide-Spread-Tandem- Axle’ version with a wider axle width for better stability. Even a lifting axle is possible. All of the three chassis are offered with single as well as with double tires and for the fenders; two matching widths are offered.

First model

The first model appeared behind a Scania R 8x4 in the version for ‘J.A Transport AB’, at home in the southern Swedish town of Kungälv. It is impressive to see with the bright green and chromed thermo bin scheme and its overall pleasant look. The actual trailer chassis is made from one casting with the integrated ‘sled’ that holds the container. Snap-in lugs at different positions ensure that a variety of containers can be taken on board and will not slip off again.

The chassis shows the simplest form of container roll-off system for trailers without a dumping capability. Therefore, the roll-off container has to be taken off the truck for dumping out. This makes sense on the original for longer transport distances but for road surface construction it is not suitable which is why ‘J.A Transport AB’ actually uses trailers with their own dumping system. A compromise had to be made when creating this model. Closer to the original are the double-tire-equipped wheels and the Wide-Spread-Tandem axles of which the front one can be lifted, but only minimally. The very hard sprung axles show very little effect.

The drawbar loses its paint and the pin fits into only one of the holes.


The rear of the trailer with the authentic-looking lights is very nicely done.


Because the trailer has no dumping mechanism, the truck pulling it has to take over the bins.


The empty chassis clearly shows the construction with the lugs.


The massive towing bar is kept horizontal by two well-adjusted springs. The drawing bar extends but loses almost all of its paint during the first try because it is made from practically unpaintable plastic. The rest of the paint can then be removed with a fingernail making it look a bit better. A pin is included to fix it to the desired length; however, it only fits into the first drilled hole; a minimal reaming out of the remaining holes is required. The supply lines begin at the side of the draw bar and, as usual, look in vain for a hook-up to the pulling vehicle.

The rear with the separately-applied colored plastic lights is very nicely done – first class! Also, at the rear and on the fender mud flaps is the name of the original maker, the Swedish trailer manufacturer, Hogstad Svets AB. The side panels are made from polished metal sheet stock and look prototypically correct. The orange reflectors are printed on as is the type designation of ‘Super Glider’.

The two thermo bins are well done and nicely detailed; the chromed surface can easily be polished with a soft cloth because the sometimes unavoidable finger prints will show.

The vehicle pulling the trailer is a Scania R 8x4 Highline of the new generation. The original can be found almost exactly, except for only minor differences, in the vehicle fleet of J.A Transport. Here WSI has really taken a lot of care with all the details; even the license plate is correct.

The paint job of the truck and trailer set has no faults and the decals are very convincingly applied.