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Michael Van Steenburg
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Linear Labs is focused on torque density rather than power density. Volumetric and gravimetric torque density are the key metrics for this company. Power is equal to Torque x RPM. The highest power to weight ratio motors are relegated to the highest speed motors that rely on gearboxes to create torque, of which the weight of the required gearbox is never included in the power to weight ratio claims. It is not uncommon to see EV motors operating at 8,000-14,000RPM (coupled to a heavy gearbox of course) in order to achieve a relevant "power to weight" ratio, albeit excluding the gearbox and liquid cooling system components in that calculation. Maximum direct drive torque with minimal weight and volume are very important for many applications and that is where the Linear Labs HET really shines.
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Oct 14, 2020