For many, it's the ultimate test of man and machine, but as you can expect, machines like to fight back against such abuse, and in turn, drivers are oftentimes left stranded in the vast South American deserts. Unlike Baja (or any other American desert race), though, chase trucks do not have the luxury of traveling down paved roads to save their drivers, which is why teams needed something that was large enough to carry lots of parts, while still being able to trek across the same perilous lands as their drivers. Thus, the T5 support truck was born.
Since these T5 trucks had to travel across the same routes as the other Dakar challengers (no outside help allowed in Dakar), they oftentimes found themselves deep into battle with other trucks of their kind. As a result, the T4 class was created back in 1999. The T4 class is made up of vehicles that look similar to the T5 support trucks, but the T4s are actual race vehicles instead of being part transporters for other teams. And if you think these trucks are slow due to their sheer size, you are greatly mistaken, as most trucks can reach up to 1000 HP and 4067 NM (3000 lb-ft) of torque! As a result, these vehicles can charge through most of the treacherous features that litter Dakar with the greatest of ease, which makes them a spectator favorite.
Over the years, Kamaz has been ruling the T4 class with multiple wins; however, there seems to be a shift with the recent successes of Gerard de Rooy in his IVECO Powerstar. Up until now, SCORE has never seen a T4 truck race at its events, but weeks before the Baja 500, talk was going around about De Rooy making the trek down to Mexico. Well, the Dutchman made it, appendicitis and all. Unfortunately for de Rooy, he succumbed to the pain, and made it 30 miles into the race before he had to return.
Fortunately, before de Rooy and his team could make their way back home, we were given the rare opportunity to bring this monstrous T4 truck into our studio and get a closer look, dirt and all …
Aside from the dirt, there aren't any fancy center-mounted A-arms or five tube bypasses that produce massive amounts of travel as it cycles through the suspension. Instead, de Rooy's IVECO Powerstar is outfitted with a solid-axle with an L&P leaf-spring pack and two Reiger coilovers. Due to the strict guidelines that have been placed by ASO (Amaury Sport Organization), T4 trucks are limited to 13.5 inches of travel. However, these limitations don't seem to faze the drivers, as they are able to conquer most obstacles at Dakar. Bringing this massive 20000-pound beast to a stop is a combo of Knorr-Bremese 17 inch rotors and calipers.
It's not uncommon to see trucks like this IVECO outfitted with some sort of cab suspension system; however, stock components were removed and replaced with a combo of Donerre and Reiger components.
Reiger Suspension may not be a household name in America; however, its shocks are widely popular amongst the WRC rally teams back in Europe. Mounted to each corner of de Rooy's Powerstar are two custom-made coilovers from Reiger. What's trick about these shocks is that the shaft is actually hollow, allowing the fluid to travel into the reservoirs up top. You'll also notice three little clickers on the base of the reservoirs that allow for quick adjustments of compression and rebound.
Underneath the IVECO canvas you'll find miscellaneous spare parts and a massive 185 gallon fuel cell. In the bottom right corner, you'll notice a gray box that serves as an air compressor for the mechanic. Right next to it are two black panels that serve as jacks. When stuck out in the dunes, the mechanic slides one of these panels underneath the Powerstar, hooks it up to the compressor, and pumps up the inflatable jack to service the vehicle.
The inside of the IVECO Powerstar is not like your standard American desert racer, as it plays the home for not two, but three crew members: Gerard de Rooy (driver), Tom Colsoul (codriver), and Darek Rodewalk (mechanic). Each crewmember has a specific role as he traverses through the rough deserts in the safety of his Sparco seats and harnesses.
Driver: Gerard de Rooy
Hometown: Eindhoven, Netherlands
Engine: 12.9 L IVECO Cursor 13 inline 6 diesel
Induction: IVECO; Holset turbo
Fueling: Electronic Bosch unit injectors
Horsepower/Torque: 840 HP & 3600 NM (2655 lb-ft)
Transmission: ZF 16S221OD
Suspension (front/rear): L&P three-leaf springs, Reiger coilovers, coil springs, Donerre bumpstops/L&P two-leaf springs, Reiger coilovers, coil springs, Donerre bumpstops
Audio/Visual: Pioneer head unit, other IVECO components, ASO-supplied GPS units
Accessories: Sparco seats and six-point harnesses, Hella Xenon headlights, Hella LED rear lights
Wheels: IVECO 20-inch beadlocks
Tires: 50x14-inch Michelin XZL
Weight: 20000 pounds
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