New South Wales S set

S sets
S90 arriving at Liverpool, February 2014
Upper deck Interior viewing the seats
In service	1972–2019
Manufacturer	Comeng A Goninan & Co
Built at	Granville Broadmeadow
Constructed	1972–1980
Entered service	1972
Refurbished	1990s
Scrapped	2011–2015, 2018–2020, 2024
Number built	509 carriages
Number preserved	16 carriages
Number scrapped	496 carriages
Successor	A & B sets
Formation	2-car or 3-car sets (L-set) 6-car sets (R-set) 4-car sets (S-set)
Fleet numbers	C3001–C3080, C3741–C3765, C3805–C3986 D4011–D4095 T4101–T4170, T4921–T4987
Capacity	Comeng: 484 (112 in control motors, 130 in trailer cars) Goninan: 486 (113 in control motors, 130 in trailer cars)
Operators	Public Transport Commission State Rail Authority CityRail Sydney Trains
Depots	Flemington
Lines served	Until 2015: all Sydney Suburban lines Until retirement: Inner West & Leppington Bankstown Carlingford Olympic Park Airport & South
Specifications
Car body construction	Stainless steel
Car length	20.22 m (66 ft 4 in)
Width	Comeng: 3,077 mm (10 ft 1.1 in) Goninan: 3,036 mm (9 ft 11.5 in)
Height	Comeng: 4,382 mm (14 ft 4.5 in) Goninan: 4,368 mm (14 ft 4.0 in)
Maximum speed	115 km/h (71 mph)
Weight	Comeng control motors: 47 t (46 long tons; 52 short tons) Goninan control motors: 45 t (44 long tons; 50 short tons) Trailers: 34 t (33 long tons; 37 short tons)
Traction system	Mitsubishi camshaft resistance control
Traction motors	4 × Mitsubishi 150 kW (200 hp) series wound DC motor
Power output	600 kW (800 hp)
Electric system(s)	1,500 V DC (nominal) from overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′Bo′ (control motors) 2′2′ (trailers)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The S sets are a class of electric multiple units that operated on Sydney's suburban rail network from 1972 up until 2019. Originally entering service under the Public Transport Commission, the sets also operated under the State Rail Authority, CityRail and Sydney Trains. Prior to their retirement, the S sets were the last class in the Sydney Trains fleet to not be air-conditioned, earning them the nicknames "Tin cans" and "Sweat Sets". They were also nicknamed "Ridgys" because of their fluted ("ridged") stainless steel panelling; they shared this nickname with similar looking K sets and C sets. Their stainless steel appearance was also shared with the intercity V sets and U sets. All remaining sets were withdrawn from service in June 2019.