Exact(53)
Indirect drive systems (pulleys and drive belts) are used on conventional electric wheelchairs, whereas direct drive systems (gear boxes) are used on power-base wheelchairs.
Improvements in drive systems have not eliminated the need for specialized winter tires.
But hybrid drive systems are ideal for garbage trucks, with their start-and-stop routine.
"The efficiency of electric drive systems isn't the problem," Mr. Gage said.
Two types of drive mechanisms are used on electric wheelchairs: indirect drive and direct drive systems.
I think the ship has sailed now for standard drive systems.
Similar(7)
Four-wheel-drive systems also raise the curb weight.
All-wheel-drive systems have evolved in two distinct directions.
Subarus are relatively inexpensive and have all-wheel-drive systems that perform well in rugged terrain.
But Audi's quattro remains the gold standard of road-going all-wheel-drive systems.
Both employ full-time all-wheel-drive systems with limited slip differentials for maximum stability.
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