Skip to content

Navigation

loco-info.com

The reference for locomotives and railcars

Compare locomotives

Add a locomotive

ALCO HH series

Milwaukee Road HH660 No. 983, which now stands in the Illinois Railway Museum

The HH series were the first diesel shunting locomotives that ALCO mass-produced in large numbers. They were also among the first land vehicles with a diesel-electric transmission. “HH” stood for “High Hood” while the...

	ALCO HH series Remove
Variant	HH660 HH600 HH660 HH900 HH1000
Built	1938-1940
Manufacturers	ALCO
Wheel arrangement	BoBo
Gauge	1435 mm
Length	13233 mm
Service mass	93495 kg
Top speed	97 km/h
Power
Engine	McIntosh & Seymour 538

General

Property	ALCO HH series HH660 HH600 HH660 HH900 HH1000 Remove
Built	1938-1940
Manufacturers	ALCO
Wheel arrangement	B-B
Gauge	1,435 mm

Dimensions and weights

Property	ALCO HH series HH660 HH600 HH660 HH900 HH1000 Remove
Length	13.23 m
Wheelbase	8.59 m
Service mass	93.5 t
Adhesion mass	93.5 t
Rigid wheelbase	2.44 m
Axle load	23.4 t

Power plant

Property	ALCO HH series HH660 HH600 HH660 HH900 HH1000 Remove
Engine	McIntosh & Seymour 538
Engine type	6-cyl. diesel

Power

Property	ALCO HH series HH660 HH600 HH660 HH900 HH1000 Remove
Power source	diesel-electric
Indicated power	492 kW (669 PS)
Top speed	97 km/h
Starting effort	307.0 kN

Calculated values

Property	ALCO HH series HH660 HH600 HH660 HH900 HH1000 Remove
Factor of adhesion	1 : 2.99
Power-to-weight ratio	5.3 kW/t
Adhesive weight/Total	1 : 1.00

Auf Deutsch umschalten