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But the electric hub motors still require all of those things. It's an additional weight, and a non-trivial additional amount of weight at that. I'd be curious on the math too.
This got me to thinking... What if conventional wheels could be made lighter weight by moving the braking components off of the wheel? Somehow slow the driveshafts or differential rather than the wheel directly. I suppose conventional brakes would still be required on non-powered wheels. I'm sure it's not a good idea, otherwise people would have done it already.
That's my point though, that if hub motors were a great idea, we'd be using them already. They have been around for over a hundred years, so it's not a new idea.
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