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In thinking about the rear wheel hub motors, it occured to me that the more powerfull the hub motor/generate the heavier it is. the other question is how and when would AWD be of use? Low traction conditions such as snow, ice and wet mud . This would only need low HP, on the order of 3 - 6 KW [4 - 8 HP] per rear wheel. The other advantage of this type of layout is it is independent of the gas/diesel engine and can be programed for all sorts of things...
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