The past decade has seen trucks and trailers get hundreds of pounds heavier, mainly due to pollution-control equipment and larger radiators. In this environment, light weighting has become an easy way to pare some weight and save on fuel costs.
The fact is, a lighter vehicle costs less to operate. The more payload can be stacked, piled, or poured on, the better. Here’s your ultimate guide to light weighting.
The Model
The first consideration should be the model of truck you are operating. Is the basic model the best for the route and the freight being hauled?
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Although it may be more expensive, would a premium model made with lightweight components offer better savings over the long haul? Lightweight components are a bit more expensive than those made of standard materials. For this reason, it’s important that you calculate payback over the long term.
The Cab
When it comes to the truck itself, is a day cab wiser than a sleeper? Depending on the type of run you are operating, this could make a huge difference.
Keep in mind, a large sleeper cab could weigh in at 1,500 or more pounds. Might the cost of an occasional motel room with a real bed outweigh the cost of the large cab if it means more freight can be put into the trailer?
For truck drivers that are operating on a percentage of revenue model, sacrificing cab space for cargo space might be a no-brainer.
The Aerodynamics
There is a reason why modern trucks have evolved into angled lines and sleek swoops. The blocky rigs of yore no longer cut it.
Today you can add things like cab extenders and upper side fairings to your vehicle. Computer modeling and advanced software design models confirmed through wind-tunnel testing are becoming the norm.
That being said, it’s important to remember that a truck operating at low speeds in an urban environment may not need expensive aerodynamic modifications. Always remember to properly analyze your operation before choosing upgrades.
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The Engine
Might a 13-liter diesel model be in your future? Generally, 500 horses is enough. Chosen over a 15-liter, a 13-liter engine can shave up to 600 pounds off the truck’s weight. Manufacturers are even coming out with heavy-duty 12- and 11-liter models.
Still, there will always be a place for the big daddy engines. When schedules matter, long-haul heavy hauling applications in hilly and mountainous terrain might call for the 600 horsepower 16-liter heavy diesel. As before, research the application before choosing the product.
The Exhaust
Vertical stack or horizontal exhaust? That is the question. Modern trucks favor a horizontal system, which uses less brackets and complicated piping.
Today’s diesels burn so quietly and cleanly that people no longer associate big rigs with belching black soot. One downside of horizontal or downward pointing systems however, is their tendency to kick up dust, gravel, salt and road grime.
The Suspension
With advanced materials built out of high-tech composites, suspension systems can now reduce weight without sacrificing durability. High-strength steel and other materials apply pressure where it’s needed.
Today’s advanced box-shaped cross sections and Y-shaped stampings easily combine two prior model functions into one efficient shape. Although lightweight suspension upgrades may be more expensive, depending on your application, they may make the most sense for the job.
The Fuel Capacity
Do you really need 300 gallons? You’d likely save a lot more having capacity for 150 gallons, with a daily top off. Whether you use fewer or smaller tanks, hauling less fuel means you’re burning less fuel.
Reducing the amount and size of your fuel tanks also leaves more room on the frame for other types of crucial equipment. Looking for a place to install your auxiliary power unit? Perhaps pairing down your fuel tank would make room.
The Final Thought
Whether it be aluminum wheels and hubs or alloy frame cross members, some components make more sense than others. These days, cost is just as important as customization, so do you have the right parts for the job?