{"id":1468,"date":"2025-07-08T15:53:39","date_gmt":"2025-07-08T13:53:39","guid":{"rendered":"https:\/\/wp.stromer-tech.info\/?post_type=ht_kb&p=1468"},"modified":"2026-08-09T17:32:14","modified_gmt":"2026-08-09T15:32:14","slug":"details-and-technical-data","status":"publish","type":"ht_kb","link":"https:\/\/wp.stromer-tech.info\/en\/knowledge-base\/details-und-techn-daten\/","title":{"rendered":"Details and technical data"},"content":{"rendered":"

The assistance control on Stromer S-Pedelecs is initially based on a TMM sensor (T<\/strong>orque M<\/strong>easurement M<\/strong>method) in the right dropout. The TMM sensor is actually a force sensor and not a torque sensor, as it is often referred to. It measures the force exerted on the chain\/belt by pedaling. The measured force is directly proportional to the torque at the bottom bracket generated by pedaling, hence the term torque sensor. Details on the operating principle are here<\/a> described.<\/p>\n\n\n\n

The manufacturer of the TMM sensors is the Dutch company I|D bike<\/a>.<\/p>\n\n\n\n

The Hall sensor mounted in the sensor plate measures the deflection of the plate caused by the tensile force on the chain (pedal torque). The maximum deflection is 0.1 mm. The Hall sensor supplies 1 V for every 40 Nm of pulling force. So if the rider applies a pulling force of 40 Nm to the chain, the sensor voltage deviates upwards by 1 V. <\/p>\n\n\n\n

Technical specifications:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Environmental impact<\/h3>\n\n\n\n

Neben dem Pedalmoment k\u00f6nnen auch andere Faktoren einen Einfluss auf die Sensorspannung haben und zu Schwankungen f\u00fchren:<\/p>\n\n\n\n