Maintenance-free city bike with coaster brake

Jochen Donner

 · 08.01.2009

Maintenance-free city bike with coaster brakePhoto: Daniel Simon
Maintenance-free city bike with coaster brake
Uncomplicated, elegant and well designed - the Diamant Beryll Sport combines contemporary bicycle technology with the traditional: it is also available with a coaster brake.

The agile all-rounder also impresses with its low weight and discreet spring technology.

The completely maintenance-free encapsulated front suspension is concealed in the shaft tube of the aluminium fork. It is fitted ex works with a steel spring and stop elastomer, lubricated for life and sealed. The spring hardness is matched to the frame size: the larger the frame, the harder the springs.

During testing, the rigid construction was noticeable in the high steering precision and pronounced smoothness of the steering. The coaster brake also requires no maintenance and brakes relatively effectively in city traffic. The coaster hub is not ideal for longer tours.

The full-length article from issue 6/2008 is available as a free PDF download.

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