GMD GMDH-1

Infobox Locomotive
name = GMD GMDH-1
powertype = Diesel-hydraulic

---

caption=Locomotive #6031 of RFFSA is a GMDH-1.
builder = General Motors Diesel
model = GMDH1
aarwheels = B-B
weight = First 2: 52 tons (47 tonnes)
Second 2: 74 tons (67 tonnes)
primemover = First 2: 2 × Detroit Diesel model 110
Second 2: 2 × Detroit Diesel series 71
poweroutput = First 2: 600 hp (450 kW)
First 2: 800 hp (600 kW)
transmission = hydraulic

The GMD GMDH-1 was an experimental diesel-hydraulic switching locomotive built by General Motors Diesel of Canada. Four examples were built. [pinkepank diesel spotters guide 2] It was a double-ended, center-cab design. The first two locomotives were each fitted with a pair of 6-cylinder Detroit Diesel model 110 engines giving 600 hp, while the second pair had two series 71 engines developing 800 hp.

The first constructed, in December 1956, was serial #A1597, numbered GMDD 1001. [cite web
url = http://www.trainweb.org/emdloco/a1500.htm
title = GMD 1500 to 1599
work = The UNofficial EMD Homepage
accessdate = 2006-11-20] It became the GMD London, Ontario plant switcher in April 1958, and was retired in November 1975. The locomotive was given to the Canadian Railway Historical Association in July 1977, and passed into the collection of the Canada Science and Technology Museum in November 1986. [cite web
url=http://www.railways.incanada.net/industrials/Ontario.pdf
title = Ontario
work = Industrial Locomotives in Canada
author = Churcher, Colin
accessdate = 2006-11-20]

The second locomotive, serial #A1713, was completed in September 1958, and was first numbered GMDD 600 as a demonstrator. It was later sold to Brazil, where it was RFFSA 600 and later Rio Grande do Sul 6031. [cite web
url = http://www.trainweb.org/emdloco/a1700.htm
title = GMD 1700 to 1799
work = The UNofficial EMD Homepage
accessdate = 2006-11-20] The unit is reported as having been subsequently scrapped. [cite web
url = http://emdexport.railfan.net/demos3.html
title = EMD Demonstrators Page 3
work = GM Export Site
author = Russell, Larry
accessdate = 2006-11-20]

The third and fourth locomotives, #A1811 and #A1812, were constructed in September and October 1959 respectively; they were initially given GMDD 800 and 801. Both were sold to industry. #A1811 passed through a succession of owners. [cite web
url = http://www.trainweb.org/emdloco/a1800.htm
title = GMD 1800 to 1899
work = The UNofficial EMD Homepage
accessdate = 2006-11-20] It was first sold to Electric Reduction Company (ERCO) in May 1961 as their #89; ERC sold it to S.G. Paikin, an equipment dealer, in October 1972, who in turn sold it to Limestone Products in October 1973 as their #3-6902. It was sold once more to Paikin in September 1979, who resold it in February 1980 to Raritan River Steel of Perth Amboy, New Jersey as their #3. It didn't last there, returning to Canada and being rebuilt by Peacock Bros. of Edmonton before passing in January 1981 to Hudson Bay Oil & Gas in Kaybob, Alberta as their #3. [cite web
url = http://www.railways.incanada.net/industrials/Alberta.pdf
title = Alberta
work = Industrial Locomotives in Canada
author = Churcher, Colin
accessdate = 2006-11-20] Hudson Oil & Gas became Dome Petroleum and then Amoco Canada Petroleum, for whom the locomotive remains operable. [cite web
url = http://members.fortunecity.com/rrpics/rare%20locos/rare.htm
title = Unusual Canadian Locomotives
author = Othen, Pat & Othen, David
accessdate = 2006-11-20]

#A1812, meanwhile, was purchased by contracting firm Guy F. Atkinson as their #28151.It was re-gauged to 5 ft 6 in (1676 mm) gauge and shipped to Pakistan for the building of the Mangala Dam, where it still resides. [cite web
url = http://www.irfca.org/docs/locolists/industrial/display.php?file=Pakistan.txt&title=Pakistan
title = Indian/South Asian Industrial Locos
work = Indian Railways Fan Club (IRFCA)
accessdate = 2006-11-20]

References