Project Summary

The goal of this project is to create a bicycle that can be effortlessly folded in an instant, akin to an umbrella, while also being easy to walk with like a roller case. This bike should be able to store flat against a wall and have built-in cargo options that do not hinder its ability to move with the folded package. While a patented mechanism for folding the bike’s frame has been demonstrated, technical hurdles still exist with regards to integrating and locking the handlebar fold to achieve a seamless single-action fold. Overcoming these challenges is crucial in realising the vision of a truly portable, practical, and functional folding bike.

Project Achievements

We had previously demonstrated and patented our innovative folding mechanism that unfolds in just half a second. This project initially focused on using mechanism optimization to make the fold more compact, while also improving the handling and adjustability of the bike. This work was very successful; the folded package is now within the 700x500x300mm standard luggage size that allows it to be transported on almost all trains around the world. It is also considerably thinner than the 300mm dimension, making its folded volume less than half of the current best in class on the market. The design has been styled and a 3D printed demonstrator is being built.

Conclusions

This project has proven the viability of the BriefBike design. This progress has unlocked further funding of £50k from Innovate UK and the demonstrator under construction will be used for presentations to equity investors.

Next Steps

The next step will be to further refine the folding geometry, with ride handling and impact tests completed, and then create a working prototype which can be used for a reward-based crowdfunding product launch. The TRIG program has been vital in de-risking this stage of development.