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Rivian's TM-B electric bike

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190 points hasheddan | 2 comments | | HN request time: 0.541s | source
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soco ◴[] No.45673474[source]
Bear with me I don't know much about bikes but I have this honest question: why does it need a chain, and won't place the engine (or whatever gear box it has) directly on the wheel?
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1. SirFatty ◴[] No.45673520[source]
So it will appear as a bicycle and be allowed on paths in parks (is what I'm guessing).
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2. Stedag ◴[] No.45674852[source]
It's a backup so that if you do lose power, you can still pedal home. Major pain to pedal an 80 lb fixed gear bike, but This is standard on ebikes and doesn't contribute much weight or cost in itself.