| Maybe upgradeable with 4 wheel drive
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At the hydrogen variant of the Chevrolet Volt is at each rear wheel a wheel hub engine. Maybe it's in the future possible to have four wheel drive as an upgrade?
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| Volvo wheel hub engines
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All the mechanical insufficiency from a 4 wheel drive replaced by 4 wheel hub engines. Complicate mechanic replaced by some electric cables.
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| Volvo wheelhub engine
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The revolution lets nothing like it was before. Gearing, clutch, differential for front and rear, differentials for the axles are yesterday.
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| From the wheel hub engine to the rim engine
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This does not look like a wheel hub engine any more. All rim engine meets more the reality. 19 kg including the tire is the weight of the rear wheel.
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| 20 kW electric motor in the back wheel
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No chain or cardan shaft necessary. The brushless electric engine together
with the one gear is direct at the rear wheel. Maintenance-free for the life span of the Maxi Scooter.
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