Editing Commer (section)

=== TS3 ===
{{main|Commer TS3}}
[[File:Commer 1954 tractor unit.jpg|thumb|right|upright|Commer 1954 tractor unit]]
The TS3 engine was a two-stroke diesel unit with three cylinders each containing a pair of pistons arranged with the combustion chamber formed between the crown of the piston pair and the cylinder walls. It was designed specifically for the Commer range of trucks.<ref>{{cite web |url=http://www.commer.org.nz/Commer_Connections/Other.html |title=The TS3 |access-date=2008-11-05 |quote=The TS3 was initially designed by Rootes Power Units Chief Engineer Eric W Coy (and under him, designers Bennett and Mileluski) at the Humber plant (Stoke-Aldermore) in 1948. It was designed solely to meet Rootes production planning requirements for an underfloor 105&nbsp;hp diesel engine for the new forward control Commer range of heavy trucks. |url-status=dead |archive-url=https://web.archive.org/web/20081119151638/http://www.commer.org.nz/Commer_Connections/Other.html |archive-date=19 November 2008 |df=dmy-all }}</ref> The TS3 and derivative TS4 were unique in using rockers to deliver power to the single crankshaft.<ref>{{cite web |url=http://www.commer.org.nz/Commer_Connections/Other_2_Strokes.html |title=Other Two Strokes |access-date=2008-11-05 |quote=Many two-strokes used opposed piston layouts, but the design feature that set the TS3/4 apart from other two-strokes was the use of rockers to transmit power from the piston to the crankshft and the use of a single crankshaft. |url-status=dead |archive-url=https://web.archive.org/web/20100522123547/http://www.commer.org.nz/Commer_Connections/Other_2_Strokes.html |archive-date=22 May 2010 |df=dmy-all }}</ref>