{"id":983,"date":"2025-07-06T01:25:36","date_gmt":"2025-07-05T23:25:36","guid":{"rendered":"https:\/\/wp.stromer-tech.info\/?post_type=ht_kb&p=983"},"modified":"2026-07-06T16:40:55","modified_gmt":"2026-07-06T14:40:55","slug":"engine-history","status":"publish","type":"ht_kb","link":"https:\/\/wp.stromer-tech.info\/en\/knowledge-base\/motorgeschichte\/","title":{"rendered":"Engine history"},"content":{"rendered":"

Type history<\/h3>\n\n\n\n

Chronicling the history of Stromer motors is difficult due to the variety of models, reissues of older models, and various special editions. myStromer AG uses brushless DC (BLDC) motors. Over the course of its model history, motors from different manufacturers have been used. All 36V motors were standard motors without specific Stromer engineering.<\/p>\n\n\n\n

BionX<\/a><\/h5>\n\n\n\n

Motors from the Canadian manufacturer BionX were used in Stromer's early models starting in 2009 (Th\u00f6mus Twinner). BionX went bankrupt in 2018. However, service and maintenance are still offered, including at bionx-service.ch<\/a>.

A Post<\/a> from Stromerforum.ch sheds light on the beginnings:<\/p>\n\n\n\n

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Quote @bluecat from stromerforum.ch: ...the BionX kit and bikes equipped with it were available on almost every corner. At Th\u00f6mus they were at the back left of the sale and demo bikes for quite a while. I think it was more the case that Th\u00f6mu Binggeli, Magnus Almgren and Dominic Isenschmid realized that it wouldn't work that way - and then designed the Stromer. Perhaps BionX was asked if they could supply OEM. In any case, Ultra Motor became the supplier - perhaps they had also built for BionX, as the firmware contains display codes that were also used by BionX. Later, the now active myStromer AG took over the firmware, while Ultra Motor Asia probably merged with TDCM. Ortlinghaus then showed that it was also possible to build a highly respectable motor in this country - and myStromer AG developed the ST2 motor. GoSwissDrive<\/a> on the other hand seems to oscillate between insolvency and MBO, Specialized has given up its turbo... <\/p>\n<\/blockquote>\n\n\n\n

People and definitions<\/p>\n\n\n\n

Th\u00f6mu Binggeli:<\/strong> Founder of myStromer AG
Magnus Almgern:<\/strong> Industrial Designer, Th\u00f6mus AG
Dominic Isenschmid:<\/strong> Product Manager, Th\u00f6mus AG: 2008 - Dec. 2009 | Product Manager and Co-Founder 2009 to May 2019, myStromer AG
Ortlinghaus: <\/strong>Leading specialist in the field of clutches, brakes and discs - including hydraulic power units and regulation and control units.
Go Swiss Drive:<\/strong> Subsidiary of Ortlinghaus. Was dissolved at the beginning of 2019. Since then, service and spare parts for GO SwissDrive wheel hub motors have been provided by Ortlinghaus-Werke in Wermelskirchen and - for Swiss customers - by Ortlinghaus GmbH, Gams<\/a> processed.<\/p>\n\n\n

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Th\u00f6mus Stromer 2009<\/mark><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n
Ultra Motor<\/h5>\n\n\n\n

From 2011, there was the V1 (later ST1) with the M25, M33, P48, and S55 engines. These came from the English company Ultra Motor Ltd. In November 2011, Ultra Motor filed for insolvency. Subsequently, in January 2012, the two e-bike brands \u201eFast4ward\u201c and \u201eA2B\u201c were acquired by the Indian company Hero Eco<\/a> (New Delhi, India), one of the largest Two-wheeler manufacturer<\/a> acquired, with annual sales of over $5 billion worldwide. At the same time, the Taiwanese subsidiary \u201eUltra Motor Taiwan\u201c (engine plant in Taoyuan, R&D in Taipei) was sold to a group of European private investors and continues to operate as an independent company.<\/p>\n\n\n\n

TDCM (Taiwan Direct Current Motor) also appeared early on. TDCM was founded in Taiwan in 1995 and belonged to Ultra Motor until it went bankrupt. It is likely that \u201eUltra Motor Taiwan\u201c and \u201eTDCM\u201c were the same company until the bankruptcy. After the bankruptcy and takeover by a group of European investors (Source: Pedelecs and e-bikes<\/a>was TDCM independent again and is today a Taiwanese company with around 30 years of experience in hub motor development)tdcm-motor.com<\/a>), with a focus on e-bikes, delivery robots, drones, and medical devices.<\/p>\n\n\n\n

Even the Th\u00f6mus V1 used, among other things, motors from TDCM \u2013 they were 36V\/500W motors.<\/p>\n\n\n

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In the picture we see a hermaphrodite, an ST1 2015\/2016 with Ultra Motor logo and TDCM label.<\/figcaption><\/figure>\n<\/div>\n\n\n

Groundbreaking developments occurred in 2014 with the introduction of the ST2, a 48-volt model. Stromer developed this in collaboration with the Bern University of Applied Sciences and the then-mentor Prof. Dr. Andrea Vezzini<\/a> the drive concept still used today. The engine electronics were outsourced from the engine, the design Patented<\/a> TDCM still manufactures the engines as an OEM today.<\/p>\n\n\n\n

ASI<\/a><\/h5>\n\n\n\n

Motors from A<\/strong>ccelerated S<\/strong>ystems I<\/strong>nc. (ASI) was found in, among others, the Stromer ST1 M33 \/ P48, the ST2 \/ ST2 LTE, and the ST2S with a manufacturing year of 2018. Stromer offers a Conversion kit from ASI to TDCM engine<\/a> (Stromer Art. No. 401833, approx. \u20ac 2,423).<\/p>\n\n\n

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TDCM<\/a><\/h5>\n\n\n\n

T<\/strong>aiwan D<\/strong>irect C<\/strong>urrent M<\/strong>otor (TDCM) has been equipping Stromer S-Pedelecs with hub motors for many years. The beginnings likely go back to 2010. The motors and mounting in the frame are based on a Patent<\/a> The Fairly Bike Manufacturing Co. Ltd. and myStromer AG, and have been continuously developed with regard to torque and power throughout the model history. The year of manufacture of the TDCM motor can be identified from the serial number: S11<\/strong>-XXXXX = Series 2011<\/strong>, E13<\/strong>-XXXXX = Series 2013<\/strong>, E18<\/strong>-XXXXX = Series 2018<\/strong> \u2026<\/p>\n\n\n\n

An attempt to document the history of engines is in following table<\/a> to be seen. The table can be commented on for additions or corrections.<\/p>\n\n\n\n

The patent<\/h3>\n\n\n\n

The myStromer AG promotes the decision to use a hub motor as follows:<\/p>\n\n\n\n