TRUCK TIPS: It's not all about power...

The best truck is the most powerful truck, right? Wrong. A truck with the biggest engine and fastest top speed would be ideal if we wanted to race in the grand prix – but it’s safe to say that’s not where our customers’ trucks work.

Our customers need trucks that can pull out of the pit with ease and can handle arduous mining, quarrying and construction environments. Having the biggest and most powerfully rated engine doesn’t necessarily mean it’s the most productive or cost-effective performer in our industry’s typical working applications.

For example, if you put a similar competitors rigid truck next to ours, would it beat us in a flat race? Probably. Is it something we are concerned about? No. Because, we are faster over the complete haul cycle. We have carefully designed our trucks for the applications they are intended to work in. Our rigid trucks have the lowest gear reduction in the market which provides us with excellent performance in mining and quarrying. In an industry that is increasingly imposing safety speed restrictions on site, an overly fast truck is compromising on other more important areas, such as rimpull.  With this in mind, we have knowingly compromised on top speed and focussed instead on rimpull, which has ultimately made our trucks one of the best and quickest at getting around a typical mine site or quarry application.

Machine Performance Compromises

The Whole Picture

When analysing truck specifications to decide which truck is best, it is important to look at the whole picture. Don't just focus on power, you need to look at how the entire drivetrain specification collaborates to overcome performance limiting factors that matter. Typical limiting factors include:

  • Machine weight: Gross vehicle weight and weight distribution
  • Ground conditions (or rolling resistance)
  • Grades (both inclines / declines)
  • Turns (bends)
  • Weather conditions etc

Final Gear Reduction Specification

Did you know the engine, transmission gearing and the rear axle gearing on our trucks is calibrated to provide complete geartrain performance? The rear axle gearing is an integral part of this calibration - it acts as our 7th gear as it increases tractive effort performance to the drive wheels. Terex Trucks haulers’ low-geared rear axle therefore compensates against our competitors’ 7 forward gear provision. The rear axle gearing, as part of the complete drivetrain, provides the Terex Trucks’ machine with an effective balance of gearing, power and machine weight for excellent worksite performance.

So, in conclusion, power is not the single most important figure. Looking at this or any other drivetrain data in isolation is useless unless you understand how the engine, transmission gearing, and rear axle gearing work together to provide the driving force at the rear wheels to move the machine’s weight more efficiently. We have focussed on all of these things and that is why our trucks outperform the competition in the deepest and steepest haul roads.