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EV skateboard chassis historical past

“The structure would not intrude with the highest hat of the automobile,” mentioned Mike Simcoe, world vice chairman of design at GM. “Structurally, the skateboard successfully stops on the floorpan. And so every thing above that’s free. In a standard construct, issues just like the cowl and sprint panel and the entrance hinge pillars are managed by issues popping out of the chassis, equivalent to engines, gas tanks, and so on. However in a skateboard, it is all down low, and you have extra freedom.

“You … categorical it by proportion. You are able to do an extended dash-to-axle, you are able to do a tall automobile. It is all ruled by the H-point,” he mentioned, referring to the theoretical pivoting level of a passenger’s hip, which influences every thing from roof top to inside area to ease of entry and exit.

Among the newest EVs, such because the Lucid Air, Rivian R1T and upcoming Cadillac Celestiq, display the benefit of the skateboard chassis. These autos have beneficiant inside area relative to their physique sizes, and within the case of the Rivian’s pickup, ample storage areas not obtainable in body-on-frame vans.

As a result of electrical motors are smaller than gasoline engines and require fewer umbilicals, equivalent to cooling and exhaust hookups, engineers can put drive motors within the entrance axle, within the rear axle, or each within the case of all-wheel-drive autos. If the Lordstown Endurance pickup launches, it will likely be the primary trendy common manufacturing automobile to have the motors within the wheel hubs. The Endurance has its battery pack mounted between the body rails, although it nonetheless makes use of a reasonably conventional rugged metal truck body.

Roush’s Fraker believes one of many skateboard’s limitations is that it’s not suited to switch the frames used on hardworking autos, equivalent to heavy- responsibility vans that haul enormous hundreds.

“I believe it will likely be fairly a couple of years earlier than we see important vans that deal with massive hundreds go to the skateboard,” he mentioned. These body rails give us glorious energy, and I believe they are going to persevere within the business market. However every thing within the lighter courses, you will notice extra integration of the battery and the automobile.”

Lindsay Brooke, editor of SAE Worldwide, the journal of the group previously generally known as the Society of Automotive Engineers, says designers can create longer autos on the skateboard chassis, and engineers can simply accommodate these adjustments with out disrupting the meeting strains. However the width of a skateboard automobile is just not as versatile.