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Rivian's TM-B electric bike

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215 points hasheddan | 1 comments | 22 Oct 25 18:00 UTC | HN request time: 0.304s | source
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justinator ◴[22 Oct 25 23:08 UTC] No.45676303[source]▶
Pedaling to make energy to store in a battery that then runs an electric motor seems to get around the best thing about bicycles: their efficiency.

No one is going to do that. It's an electric motorcycle in disguise. Don't even play.

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dfltr ◴[22 Oct 25 23:18 UTC] No.45676373[source]▶
If only there were some way to take all that work of pedaling and efficiently translate it into torque on the rear wheel, right?
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justinator ◴[22 Oct 25 23:44 UTC] No.45676570[source]▶
like a... drive train or something?

science fiction my good dude.

replies(1): >>45677486 #
_whiteCaps_ ◴[23 Oct 25 02:22 UTC] No.45677486[source]▶
Wouldn't you be able to pedal at your most efficient rate, and go at whatever speed you want? Like how diesel-electric trains don't actually drive the wheels with the diesel engine, they power an electric motor.

(I've never ridden any kind of e-bike so I don't really know how it works)

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1. aidenn0 ◴[23 Oct 25 05:40 UTC] No.45678497[source]▶
On my e-bike, with just a standard 7-speed transmission I can pedal at my most efficient rate always; since I have an extra 300W of power available I don't need the super-low gears for climbing.