Nua Electrica, the titanium electric bike that recharges by pedaling

The Nua Electrica is an electric bike with a titanium frame that hides its engine and battery in the rear hub. It is equipped with a system of energy recovery during braking and pedaling.

An electric bike that weighs only 13 kg has the elegance of a muscle bike and recharges by pedaling. It is not a robot portrait of the ideal e-bike but of a model that does exist. This is the Nua Electrica, an urban electric bike, single speed, with a titanium frame and a motor/battery assembly integrated into the rear hub.

It is the result of the Spanish brand Nua Bikes which specializes in making titanium frames, a material upscale popular with cyclists for its strength, but also a capacity for absorption of vibration and that makes it more comfortable than carbon.

The Nua Electrica, therefore, combines these advantages with an all-in-one electric kit, Zehus Bike +, which encloses a 250 W motor, a 30-volt 160 Wh lithium-ion battery, sensors and a Bluetooth chip in the rear wheel hub. To communicate with the mobile application that is used to control the six modes of assistance.

The whole weighs only 3 kg. Made since 2014 by the Italian brand Zehus, this hub fits all frames with a 120 mm offset. According to Nua Bikes, the bike has 30 km of autonomy if we use the turbo mode with the assistance that cuts at 25 km / h.

The all-in-one Zehus Bike + hub.  © Zehus


The bike turns into a generator

But the significant icing on the cake is the Bike +, a hybrid model that assists startup and on a climb, and turns into a generator to recharge braking and pedaling on flat terrain. In theory, the electric bike will never need to be connected to the mains to recharge its battery.

The Nua Electrica is equipped with a Shimano Alfine group, a Gates carbon belt transmission, Shimano Deore hydraulic brakes and DT Swiss wheels. It is sold for 3,995 euros, which remains a relatively reasonable price for a bike with a titanium frame, offering such benefits.