February 21, 2024


Danish bike maker Coh&Co unveiled a foldable commuter bike called the Siggi at Eurobike this week, with a frame and fork made from a proprietary wear-resistant composite material, and it can be configured with Zehus’ nifty one-piece hub drives.

Mette Walsted Kristiansen, company director, said: “The Siggi combines everyday performance with convenience, making it the ideal bike for urban and long-distance riding. Development and production of bicycles.Through this experience and constructive communication with customers and dealers, we discovered that people in cities need compact bicycles that can be easily stored in an apartment or under a desk, and can be taken on the train, subway without hassle Or put it in the trunk of a car.”

The frame of the lightweight folding e-bike is made from a proprietary composite of carbon fiber and basalt called StoneWeave, which is reportedly both durable and fully recyclable. The left-hand fork is also made from the same material and allows compact folding – the rear rack does double duty as a parking rack. The frame’s handle-like top tube also makes for easy portability.

The folding frame is made from a Coh&Co composite called StoneWeave, which is lightweight, durable and recyclable at the end of its life
The folding frame is made from a Coh&Co composite called StoneWeave, which is lightweight, durable and recyclable at the end of its life

Koch Corporation

Interestingly, the design also features some elastomer extrusions on the front and back to help smooth out uneven terrain. The reach of the collapsible aluminum handlebar can be adjusted to accommodate different rider sizes or styles. The whole thing reportedly weighed just 10kg (22lb).

The Siggi is available as a single-speed PAS e-bike or with a four-speed internal hub, or optionally without a motor and with a Shimano Alfine 11-speed gearset.

Coh&Co has teamed up with Italy’s Zehus Motors to develop an electric version that integrates the motor and battery into a rear hub that is said to provide smooth assist when pedaling forward, but recharge the battery when pedaling backward.

The frame rises, the rear wheels flip over to hover over the luggage rack/stand, the front wheels flank it, the handlebars fold in and back, and the seat can be pushed down for ride-hailing in the trunk of a car or train
The frame rises, the rear wheels flip over to hover over the luggage rack/stand, the front wheels flank it, the handlebars fold in and back, and the seat can be pushed down for ride-hailing in the trunk of a car or train

Koch Corporation

Key specs also include 20-inch wheels with 35mm tyres, “fast acceleration in the city”, hydraulic disc brakes, and a carbon fiber seatpost topped with a “road” saddle.

Coh&Co is raising production funds crowdfunding, current benefits start at 1,610 euros (about $1,765), though you’ll also need to spend another 1,036 euros for the single-speed e-bike add-on, or 1,860 euros for the Zehus drive plus gear. The usual crowdfunding caveats apply, but if all goes to plan, global shipments are expected to begin in January 2024. The video below provides more information.

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source: Koch Corporation