Flux bicycle kit by Offer Canfi wirelessly
charges electronic devices


Royal College of Art graduate Offer Canfi has envisioned a future for cycling in which inductive bicycle lanes could be used to wirelessly charge electric bikes and other devices on the go.

Flux Bike by Offer Canfi

Offer Canfi's Flux project imagines a near-future scenario where bicycles are powered using resonant inductive coupling – a method of transmitting electrical energy without man-made conductors.

"This project is focused on resonant inductive bicycle lanes as a first step towards wireless power grids," said Canfi. "The road becoming an emitter that can power up electric bicycles, laptops and phones, making batteries redundant."

Flux Bike by Offer Canfi

The designer proposes creating inductive bicycle lanes by laying a high-friction screed surface embedded with emitter coils along sections of road.

The current passing through these coils would transfer electricity wirelessly to similar copper elements on the bicycle mechanism via an oscillating magnetic field.

Flux Bike by Offer Canfi

"The coils that are embedded into the screed turn on when the bicycle comes within range, using a radio-frequency identification (RFID) badge that recognises when the bike is near," Canfi told Dezeen.

Flux Bike by Offer Canfi

This could replace batteries currently used to power electric bikes, and could also be used to charge electronic devices like mobile phones and laptops during journeys.

Flux Bike by Offer Canfi

"Batteries are still the most expensive, polluting and heavy element of any electric vehicle and that is before you consider their short life cycle and problematic recycling procedures," said Canfi.

Flux Bike by Offer Canfi

His alternative Capacitor 1.21 kit is designed to lock on to any diamond-frame bicycle to convert it into an electric model.

Flux Bike by Offer Canfi

The capacitor stores energy without the chemicals found in batteries and the kit connects the series of copper coils to the bike's mechanism so the current can help power the ride.

Once the coils in the road and bike are paired other devices with coils embedded, like mobile phones, could feed off the electricity and use it to power up – similar to how wireless Qi chargers work.

Flux Bike by Offer Canfi

"A fun fact about resonant induction power transfer is that once the primary and secondary coil are in a state of coupled magnetic field, this field itself becomes an emitter and secondary coils can connect to it as well," Canfi explained.

Flux Bike by Offer Canfi

The additional parts are printed in nylon using selective laser sintering (SLS) to keep them as light as possible, as extra weight would require more power.

Flux Bike by Offer Canfi

Canfi's capacitor adds less than two kilograms to the bike, but a lighter model would increase efficiency and lower costs.

He believes that recent developments in the creation of ultracapacitors, which store high amounts of electric charge, using miracle-material graphene have brought his idea closer to reality.

Flux Bike by Offer Canfi

"Looking at the growing market for electric bicycles and the emergence of resonant induction as an efficient way to wirelessly transfer electric power, this project was about describing a truly possible future for urban commuting," Canfi said.

Flux Bike by Offer Canfi

The project was presented at the Royal College of Art's annual degree show last month, along with a man-made biological leaf that could enable long-distance space travel and a proposal to create synthetic foods using nanotechnology.

  • Henry

    The Fox 32 fork strapped to what looks like a lugged steel road frame is the icing on the cake with this one.

    • Damian

      Exactly my thinking as well, haha.

  • Xela C

    How is this ridable? Do you not fall over backwards going up hill?

  • umm

    That frame with that fork is really hard to watch. He probably used what he got, but it totally distracts from the actual idea. Even if you are just remotely into bikes.

  • skinnyfat

    Immediately this image came to my mind:


    Something is just not right here.

  • dan

    As someone said below, he was surely just using what he had to hand – don’t let that detract from an impressively engineered project that seems to be very feasible in the near future.

    The fact that this has clearly been built and tested, and is not a project based on fancy renderings deserves congratulating, especially given some of the other projects that have been shown on here recently (such as the folding bike).

  • nad

    Feasibility and usability that is exactly what me and the other commenters are not seeing. And that is why they rather comment on the frame and fork.

  • Idontgetit

    Hub dynamos, very efficient and blend seamlessly into any bike design. Add a battery with a small circuit board and there you have it. Or when we talk about the near future, plug it into your electric bike.

  • Ollie

    Worse still, that frame/fork combination is quite hard to achieve. It didn’t just happen by accident. A fork for a lugged frame has a 1″ dia. steerer tube typically, whereas that fork will have at least a 1 1/8″ steerer tube – probably even a tapered steerer.

    Basically, it took some deliberate custom fabrication to achieve this mess.