Intelligent shifting with the urban e-bike "Upstreet TR:CF" from Flyer

The name sounds unwieldy: "Upstreet TR:CF". The abbreviations TR stand for transmission and CF for carbon fibre, as Marco Alessandri, Head of Marketing at Flyer, explains to me. And that already names the two main features of the Huttwil-based company's new commuter bike: the automatic gearstick and the full carbon fibre frame.

"Upstreet TR:CF" from Flyer

According to Marco Alessandri, the commuter bike is ideal for distances of 25 to 30 kilometres each way and is designed to enable a fast yet comfortable ride. The handlebars developed by Flyer with integrated cable routing through the head tube result in a tidy Cockpit. In addition to the frame, the automatic shifting system of the motor-gearbox unit, or MGU for short, from Pinion is a highlight of the "Upstreet TR:CF".

The model presented at Eurobike is equipped with a 12-speed gearbox and the motor delivers a torque of around 85 Newton metres. "With normal use of power, it is possible to travel at a constant maximum speed of 45 km/h," says Alessandri. In addition, the Pinion belt drive is noiseless and virtually maintenance-free. According to Marco Alessandri, only a quick oil change is required after around 10,000 kilometres.

Intelligent commuter

According to the manufacturer, the automatic gearstick works in two modes: one works exclusively via the cadence. The system shifts the gears up or down depending on the frequency. In intelligent mode, the gears can be overridden manually. The automatic system registers these gear changes and checks in which situations, at which inclinations and cadence a gear change takes place. The automatic system saves this manual override of the system and then adjusts the shifting pattern in the first mode.

According to Marco Alessandri, the "Upstreet TR:CF" is equipped with inclination sensors, cadence sensors and sensors that recognise the crank position. "A gear change always takes place when the cranks are positioned vertically. This applies the least amount of force and protects the gearbox." In combination with a chip built into the motor, an algorithm calculates the best possible gears for each situation in the background. According to Alessandri, this is controlled via the corresponding app on Android or iOS.

According to Marco Alessandri, the market launch of the new commuter bike from Flyer is planned for October. There will be two versions: up to 25 km/h for 7999 francs and 8499 francs for the version up to 45 km/h.

Our purchasing department will clarify whether and when we will have the product in our range.