Don-Bur Aerodecker could slash fuel bills

Don-Bur has produced a new type of aerodynamic double-decker, which it claims offers significantly better fuel economy than a conventional sloping roof trailer.

The Aerodecker, which is aimed squarely at pallet networks, is an attemptto create the most fuel effic-ient double-decker without reducing load-carrying capability.

Key to its success is the straight-frame design which results in a completely flat floor. Not only does this maximise internal space and improve the ease of loading, but according to Don-Bur, the subsequent flat underside is more aerodynamic than a step-frame trailer. Also aiding wind resistance are buckleless curtains, side skirts and taper fins at the rear of the trailer.

The flat floor allows for a gentle roof gradient, with a curve that extends for 8,500mm. On a normal double-decker the curve ends above the landing legs. The 13.7m tri-axle trailer has a 3,700mm internal aperture at the rear (thanks to a slimline cant rail), a 120m³ load volume and capacity for 52 pallets.

It is fitted with four new design 3.2m-long movable deck modules, each of which can be repositioned with a forklift at 150mm increments.

The straight-frame design requires a low 980mm fifth-wheel height, and for this reason the demonstrator trailer is being supplied complete with suitable tractor - a Continental-spec 4x2 DAF XF105.

According to technical sales director Andy Richardson, this is unlikely to be a problem for the majority of pallet network members, many of which run well below 44 tonnes.

He explains that it is 1,043kg lighter than a regular double-decker anyway - a consequence of a Technolite aluminium rear panel, the new ratchet system and Michelin super-singles.

Aerodecker has an estimated coefficient of drag of 0.65, which is 0.1 better than a Don-Bur EcoStream double-decker.

Although the first trailer is yet to go on the road, Don-Bur estimates that it will be 21% better on fuel economy than a conventional double-decker.

"Yes the tractor will be more expensive, but if you can save £7,000 or £8,000 in fuel each year you will soon pay it off. An estimated 50% of a haulier's costs are fuel, so any difference they can make will be an advantage," says Richardson.

The demonstrator will be available from mid-April, and will be loaned to interested parties for one-week slots through various DAF dealers - via the website. First will be Adams Morey, which was heavily involved in the project.