Getting around

28 February 2008

Off-road capability while complying with road laws across Europe was a firm design requirement for the WT 1000, according to Wumag general manager Ludger Greskötter. It was Tadano Faun that accepted Wumag's request to deliver a crane carrier to meet that need.

The crane manufacturer, based near Nuremberg, supplied Wumag with a modified, five-axle, 10 x 8, ATF 110 G-5 RK all-terrain chassis. The end result has travel dimensions of 16.2 m long, 2.75 m wide and 3.99 m high. A 390 kW, turbo-powered, intercooled Mercedes-Benz engine powers the carrier up to 85 km/hr through an AS-Tronic, 16-speed ZF transmission.

Although axles and other running gear components are standard to Tadano Faun's design, the carrier needed a new frame and turret to meet Wumag's needs. “The weight tolerance [guideline] was severe,” says Benno Schmoranzer, of engineering consultancyMS Müller + Schmoranzer of Sande, near Wilhelmshaven, Germany, which helped in the turntable and chassis engineering activities.

Among the changes made by Mr Schmoranzer were moving the slew ring 3 m further to the rear than standard and repositioning the fuel tank forward. Mr Schmoranzer also increased the separation between the 3rd and 4th axles by 200 mm to comply with road laws in France, and the rear outriggers were moved farther away from the rear axle.

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