FlatSix911
Well-Known Member
- Region
- USA
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- Silicon Valley
An interesting article from Electrek... the weight weenies will love this Ebike! 
Truly an amazing engineering feat to design and build this as a DIY Ph.D. project.
electrek.co
We’ve seen lightweight e-bikes before, but none have ever approached the 15.15-lb (6.872 kg) Freicycle electric bike built by mechanical engineer Dennis Freiburg. His featherweight e-bike recently set a new Guinness World Record for the Lightest Electric Bicycle – Prototype. The Freicycle took Freiburg the better part of a year to design and build, serving as part of a project for his doctoral degree.
Built on a carbon Merida Scultura road bike, the Freicycle benefited from the start with an ultralightweight frame weighing less than 2.2 lb (1 kg). Freiburg kept the rest of the weight down with as much carbon fiber as possible for critical load-bearing components such as the wheels, fork, and cranks. Other components that couldn’t be sourced light enough were 3D-printed, such as special ultralight pedals.
Truly an amazing engineering feat to design and build this as a DIY Ph.D. project.

This 15-lb electric bicycle set a world record and pushes the limits of e-bike construction
We’ve seen lightweight e-bikes before, but none have ever approached the 15.15-lb (6.872 kg) Freicycle electric bike built by mechanical...

We’ve seen lightweight e-bikes before, but none have ever approached the 15.15-lb (6.872 kg) Freicycle electric bike built by mechanical engineer Dennis Freiburg. His featherweight e-bike recently set a new Guinness World Record for the Lightest Electric Bicycle – Prototype. The Freicycle took Freiburg the better part of a year to design and build, serving as part of a project for his doctoral degree.
Built on a carbon Merida Scultura road bike, the Freicycle benefited from the start with an ultralightweight frame weighing less than 2.2 lb (1 kg). Freiburg kept the rest of the weight down with as much carbon fiber as possible for critical load-bearing components such as the wheels, fork, and cranks. Other components that couldn’t be sourced light enough were 3D-printed, such as special ultralight pedals.