Direct-drive mechanism (English Wikipedia)

"What is a Strong Magnet?". The Magnetic Matters Blog. Adams Magnetic Products. October 5, 2012. Archived from the original on March 26, 2016. Retrieved October 12, 2012.

autoblog.com

P. Ransome-Wallis (2001) Illustrated Encyclopedia of World Railway Locomotives, p.63
Roy V. Wright (ed.) (1938) Locomotive Cyclopedia of American Practice, section 16 "Diesel locomotives", 10th edition, Association of American Railroads - Mechanical Division, p.973
Baichun Zhang, Marco Ceccarelli (Eds.) Explorations in the History and Heritage of Machines and Mechanisms, p.292
Bruno Siciliano, Oussama Khatib (Eds., 2008) Springer Handbook of Robotics, p.80
Robotics Technology Abstracts, Volume 4, Cranfield Press, 1985, p.362, quote: "direct drive. The direct coupling of motors eliminates backlash completely"
United States Armed Services Board of Contract Appeals (1966) Board of Contract Appeals Decisions, Volume 66, Issue 1, p.764, published by Commerce Clearing House
Uday Shanker Dixit, Manjuri Hazarika, J. Paulo Davim (2016) A Brief History of Mechanical Engineering, ch.7 "History of Mechatronics", pp.160-161
K. T. Chau Electric Vehicle Machines and Drives: Design, Analysis and Application, ch.8 "Vernier Permanent Magnet Motor Drives", p.227

"How Do All-Electric Cars Work?". Alternative Fuels Data Center. U.S. Department of Energy. Archived from the original on 2016-09-30. Retrieved 9 July 2021.

"In-wheel motor". Nissan Motor Corporation. Archived from the original on 2015-04-04. Retrieved 9 July 2021.

Asada, H., & Kanade, T. (1983) Design of direct-drive mechanical arms in Journal of Vibration, Acoustics, Stress, and Reliability in Design, Volume 105, Issue 3, pp.312-316

Patel, Prachi. "GE Grabs Gearless Wind Turbines". Technology Review (MIT). Archived from the original on 31 January 2012. Retrieved 7 April 2011.

"What is a Direct Drive Motor | Electric Torque Machines". Archived from the original on 2018-11-10.
"What is a Strong Magnet?". The Magnetic Matters Blog. Adams Magnetic Products. October 5, 2012. Archived from the original on March 26, 2016. Retrieved October 12, 2012.
Patel, Prachi. "GE Grabs Gearless Wind Turbines". Technology Review (MIT). Archived from the original on 31 January 2012. Retrieved 7 April 2011.
Dvorak, Paul. "Direct drive turbine needs no gearbox". Windpower Engineering. Archived from the original on 21 February 2017. Retrieved 7 April 2011.
"In-wheel motor". Nissan Motor Corporation. Archived from the original on 2015-04-04. Retrieved 9 July 2021.
"How Do All-Electric Cars Work?". Alternative Fuels Data Center. U.S. Department of Energy. Archived from the original on 2016-09-30. Retrieved 9 July 2021.
"Koenigsegg creates a new breed of hyper-hybrid with 1,500-hp, transmission-less Regera". New Atlas. 2015-03-17. Archived from the original on 2016-08-12. Retrieved 3 May 2021.

Dvorak, Paul. "Direct drive turbine needs no gearbox". Windpower Engineering. Archived from the original on 21 February 2017. Retrieved 7 April 2011.