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The Tschanz drive or Oerlikon single-axle drive is a fully sprung single-axle drive for
* PLM 242 BE
* PLM 262 A
The Tschanz drive or Oerlikon single-axle drive is a fully sprung single-axle drive for electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas ...
s named after its inventor Otto Tschanz or after Maschinenfabrik Oerlikon. The drive was not widely used because its competitor, the Buchli drive
The Buchli drive is a transmission system used in electric locomotives. It was named after its inventor, Swiss engineer Jakob Buchli. The drive is a fully spring-loaded drive, in which each floating axle has an individual motor, that is placed in ...
, was cheaper and lighter.
Construction
The Tschanz drive is a fully sprung drive, which means that the motors are housed in the sprung part of the locomotive and are thus less exposed to shocks from the rails. Also, the shocks from the wheelsets to the rail are reduced because there is less unsprung weight on them. The traction motor is firmly mounted in the locomotive frame and drives through a single-stage gearbox to a gear that is located to one side of the wheel. The power transmission from this gear to the axle is done with a cardan shaft which has universal joints at both ends and passes through a hollow axle.Use
Rolling stock on which the Tschanz drive was used include: *SBB-CFF-FFS Be 2/5
Swiss Federal Railways (german: link=no, Schweizerische Bundesbahnen, ''SBB''; french: link=no, Chemins de fer fédéraux suisses, ''CFF''; it, Ferrovie federali svizzere, ''FFS'') is the national railway company of Switzerland. It is usuall ...
* SBB-CFF-FFS Ae 4/8
The Ae 4/8 was a prototype locomotive of the Schweizerischen Bundesbahnen (Swiss Federal Railways) (SBB) for the testing of electrical operation. The locomotive was equipped with two different drives, therefore acquiring the nickname ''Bastard''. ...
* BTB BCe 2/* PLM 242 BE
* PLM 262 A
Patents
*Drive device on railway vehicles with motors firmly mounted on the spring-loaded frame, (1916). *Motor mechanism for railway vehicles, with electric motors rigidly fixed to the frame mounted on suspension springs, (1917). *Driving mechanism for railway-vehicles with electric motors rigidly mounted on spring-supported frames, (1919).See also
*Quill drive
A quill is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird. Quills were used for writing with ink before the invention of the dip pen, the metal-Nib (pen), nibbed pen, the fountain pen, and, ...
* Winterthur Universal Drive
References
{{reflistFurther reading
* K. Sachs: Elektrische Vollbahnlokomotiven. Julius Springer, Berlin 1928, S. 308–309 (Fussnote). * Elektrifizierung der Gotthardbahn. In: Schweizerische Bauzeitung. Band 69/70, Nr. 7, 1917, S. 83, doi:10.5169/seals-33931. Electric locomotives Electric locomotives of Switzerland Locomotive parts