Video: Dual-drive 50mph e-bike can be yours for US$5000

Madness or genius? you tell us...

by John Stevenson   August 19, 2013  

Screen Shot 2013-08-19 at 15.56.16

How do you make an electric bike that will do 50mph? You bring together two hub-motors, a backpack full of lithium-ion batteries and - we assume - some clever electronic jiggery-pokery to make it all work and you get this:

The builder says it has two-wheel drive from the pair of motors, which must make for a very different ride feel from a conventional bike, and three power settings for 20, 30 and high-40s mph speeds.

The set-up uses a 72-volt battery. If you’ve seen videos of exploding lithium-ion batteries, fret not: these use lithium iron phosphate chemistry, which doesn’t quite have the energy density of the batteries in your laptop, but can take a higher power draw and has a longer service life.

The nutter engineering wizard behind this machine can be found though his Facebook page. His custom-built e-bikes cost between $2000 and $5000

If the videographer and the venue, California’s Mulholland Drive, seem familiar, that’s because YouTube user rnickeymouse, shot a famous clip of a cyclist getting rear-ended by a motorbike in the same place.

8 user comments

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this could really upset a few Strava users!

posted by sorebones [104 posts]
19th August 2013 - 16:47

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Never ridden a motorbike but wondering if it might be safer to wear leathers going at those speeds, not being a TDF descent specialist!

posted by Gashead [29 posts]
19th August 2013 - 16:49

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So because it's got pedals that he doesn't use and it can "only" do 50mph it's an e-bike.

posted by Jakal79 [51 posts]
19th August 2013 - 16:57

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I wonder if there will be problems with steering (under and over) if the power doesnt match up between the motors. Could be bad on the corners!

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posted by downfader [193 posts]
19th August 2013 - 17:22

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Its a motorbike. I have no interest at all, but I'm sure these sort of vehicles will become increasingly popular.

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posted by Mike_B [28 posts]
19th August 2013 - 18:53

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Is that guy seriously wearing white crocs??

posted by joeallister [1 posts]
20th August 2013 - 11:53

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The bar-ends look a bit superfluous for climbing.

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posted by mingmong [191 posts]
20th August 2013 - 13:43

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I think this guy rides near me - he's on Strava

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posted by minnellium [78 posts]
20th August 2013 - 21:51

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