Video: Dual-drive 50mph e-bike can be yours for US$5000
Madness or genius? you tell us...
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.
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.