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Re: IRCA 600s, GA8s, and ALCo MX620s...

August 09, 2018 04:28PM
The GA8 units have two body mounted traction motors driving the wheels through cardan shafts, similar to the same actual drive that diesel-hydraulics used to get power to the axles. Most people don't realize that both EMD and GE offer a variation of their standard traction motors designed to be hard mounted instead of hung from an axle, common in the oil drilling industry and some other applications. There are several surviving and parts GA8s in El Salvador at a museum, with one or two operable according to videos.

The GE 50 tons and 600 class C+B+C monsters all use GE747 traction motors. Self-ventilating double-reduction hypoid (right angle) mounted - gear unit on axle and end of traction motor nose mounted. This was the common traction motor for industrial and narrow gage GE diesel-electrics during the late 40s/early 50s. GE continued to use it in the industrial line until reverting back to the GE763. The advantage of the GE747 is that it could be easily adapted to any gage down to 36", though I know of some modified down to 24" (aftermarket or GE supplied?). The 600s were, at the time, the largest 36" gage loco I am aware GE had built. They were far from little at 1200 hp and 37,000 pounds tractive effort. These has Alco 12-244 engines and likely became a maintenance/parts nightmare, no to mention subsequent designs with the GE764 motors were more impressive.

The 802, 803, B&W U10B and MX620s would all have GE764 traction motors, single-reduction axle-hung "wheelbarrow mount". (Chris - remember the GE761 absolutely will not go below meter gage -that extra 3-3/8" gets you in a whole lot of trouble and is evident in the difference between the GE761 and GE764 ratings.)

By 15 & 19 - I assume you are referring to the GE 47-tons on the CATS. Those are GE733 or GE763 traction motors on GA33 gear units. Very similar to the GA22/GE747 arrangement except they are a parallel mount. For standard gage everything still fits between the wheels, but on narrow gage the traction motor just barely misses the wheel which is limited to 33" diameter. These aren't "truck mounted" - the gear unit is mounted on the axle and the third mounting point of the assembly is on the truck assembly.

Dan
Subject Author Posted

New Diesels for the D&S?

gregcoit July 28, 2018 09:02AM

Re: New Diesels for the D&S?

kcsivils July 28, 2018 09:15AM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

bcp July 28, 2018 09:18AM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S? Attachments

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

Chris Webster July 29, 2018 10:06AM

Re: New Diesels for the D&S?

Will Gant July 29, 2018 04:42PM

Re: New Diesels for the D&S?

bcp July 29, 2018 04:52PM

Re: New Diesels for the D&S?

narrowgaugejoe10 July 29, 2018 07:50PM

Re: New Diesels for the D&S? Attachments

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Re: New Diesels for the D&S?

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USG twins - not a U6B!

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Re: New Diesels for the D&S?

Chris Webster July 29, 2018 07:24PM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

Will Gant July 28, 2018 10:49PM

Re: New Diesels for the D&S? Attachments

John West July 29, 2018 06:31PM

Re: New Diesels for the D&S?

Tom Moungovan July 29, 2018 07:26PM

IRCA 600s, GA8s, and ALCo MX620s...

Steam Fan 492 August 03, 2018 11:44PM

Re: IRCA 600s, GA8s, and ALCo MX620s...

Chris Walker August 04, 2018 02:42PM

Re: IRCA 600s, GA8s, and ALCo MX620s...

Dan Robirds August 09, 2018 04:28PM

Re: IRCA 600s, GA8s, and ALCo MX620s... Attachments

Chris Walker August 10, 2018 04:07AM

Re: Traction Motor Mounting

Chris Walker August 14, 2018 03:11AM

Re: Traction Motor Mounting

Mark Valerius August 14, 2018 07:35AM

Re: Traction Motor Mounting Attachments

Mark Valerius August 15, 2018 06:34AM

Re: Traction Motor Mounting Attachments

Dan Robirds August 15, 2018 01:25PM

Re: Traction Motor Mounting Attachments

Chris Walker August 15, 2018 01:43PM

Re: Traction Motor Mounting Attachments

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Re: Traction Motor Mounting

Ed Horan August 15, 2018 03:16PM

Re: Traction Motor Mounting

Dan Robirds August 15, 2018 03:32PM

Re: Traction Motor Mounting

Ed Horan August 15, 2018 04:12PM

Re: Traction Motor Mounting

Mark Valerius August 16, 2018 11:26AM

Re: New Diesels for the D&S? Attachments

bcp July 29, 2018 08:52PM

Re: New Diesels for the D&S?

usmc1401 July 29, 2018 09:52PM

Re: New Diesels for the D&S?

Earl July 30, 2018 01:20PM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

bcp July 30, 2018 01:38PM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diseasels for the D&S vs Oil-Fired Steam

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Re: New Diseasels for the D&S vs Oil-Fired Steam

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Re: Vanderbilt vs Whaleback Tenders for D&S Oil-Fired Steam

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Re: New Diesels for the D&S?

Dirk Ramsey July 30, 2018 08:17PM

Re: New Diesels for the D&S?

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USG locomotives Attachments

Dan Markoff July 30, 2018 04:07PM

Re: USG locomotives

stuart olson July 30, 2018 07:49PM

Re: USG locomotives

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S? Attachments

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S? Attachments

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S? USG and White Pass Wide Cab Units

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Re: New Diesels for the D&S? USG and White Pass Wide Cab Units Attachments

bcp July 31, 2018 08:19AM

Re: New Diesels for the D&S? USG and White Pass Wide Cab Units

Will Gant July 31, 2018 05:13PM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Purchase Confirmed

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Bombardier Units Attachments

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Re: Purchase Confirmed

stuart olson July 31, 2018 04:46PM

Re: Purchase Confirmed

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Re: Purchase Confirmed

stuart olson August 01, 2018 05:50PM

Re: Purchase Confirmed

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Re: Purchase Confirmed - Traction Motors

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Re: New Diesels for the D&S?

michael July 31, 2018 03:14PM

Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S? Attachments

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Re: New Diesels for the D&S?

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Re: New Diesels for the D&S?

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Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

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Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

Sauerteig August 01, 2018 07:19PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

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Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

Sauerteig August 01, 2018 07:38PM

Faulty reasoning?

John West August 01, 2018 08:38PM

Re: Faulty reasoning?

Sauerteig August 01, 2018 09:01PM

Re: Faulty reasoning?

John West August 01, 2018 09:19PM

Re: Faulty reasoning?

Sauerteig August 01, 2018 09:34PM

Re: Faulty reasoning?

John West August 01, 2018 10:34PM

Re: Faulty reasoning?

Sauerteig August 01, 2018 10:38PM

Re: Faulty reasoning?

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Re: Faulty reasoning?

Sauerteig August 02, 2018 07:24AM

Re: Faulty reasoning?

gregcoit August 02, 2018 08:09AM

Re: Faulty reasoning?

Sauerteig August 02, 2018 09:31AM

Re: Faulty reasoning?

drgwk37 August 02, 2018 08:19AM

Re: Faulty reasoning?

Sauerteig August 02, 2018 09:32AM

Re: Faulty reasoning?

Will Gant August 02, 2018 11:36AM

Re: Emotional "reasoning" . . . drinking smiley

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Re: Emotional "reasoning" . . . drinking smiley

Sauerteig August 02, 2018 09:37AM

Re: Emotional "reasoning" . . . drinking smiley Attachments

Popeye8762 August 02, 2018 03:50PM

Re: Faulty reasoning?

Samart August 02, 2018 09:51PM

Re: Excellent Reasoning . . . thumbs upthumbs up

Russo Loco August 03, 2018 07:38AM

Re: Faulty Premises lead to Faulty Conclusions.

Johnson Barr August 06, 2018 11:07AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

Will Gant August 01, 2018 07:25PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

kcsivils August 01, 2018 07:36PM

Wow, such angst!

Dave Vollmer August 02, 2018 09:56AM

Re: Wow, such angst!

trainrider47 August 02, 2018 11:19AM

Re: Wow, such angst!

Will Gant August 02, 2018 11:31AM

Re: Wow, such angst!

Samart August 03, 2018 05:37PM

Re: Wow, such angst!

Ron Keagle August 05, 2018 09:19AM

Re: Wow, such angst!

Dave Vollmer August 05, 2018 10:57AM

Re: Wow, such angst!

Will Gant August 05, 2018 10:59AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

michael August 01, 2018 07:51PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

gregcoit August 02, 2018 07:54AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

JoeK August 01, 2018 10:22PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

Popeye8762 August 02, 2018 01:00AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

JoeK August 02, 2018 05:50AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

trainrider47 August 02, 2018 12:54PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

kcsivils August 02, 2018 01:00PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

JoeK August 02, 2018 07:48PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

michael August 02, 2018 07:51PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care Attachments

Jerry474 August 02, 2018 08:29PM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

JoeK August 03, 2018 08:40AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

JoeK August 03, 2018 05:07AM

Re: New Diseasels for the D&S? MOST of their Riders really Just Don't Care

Russo Loco August 03, 2018 07:15PM

Re: #483 - better running in Durango than rusting in Chama thumbs upthumbs up

Russo Loco August 05, 2018 07:09PM

Re: New Diesels for the D&S: Largest employer?

Rader Sidetrack August 01, 2018 06:03PM

Re: New Diesels for the D&S: Largest employer?

tinticng August 01, 2018 06:50PM

Re: New Diesels for the D&S?/The Polar Express

kcsivils August 01, 2018 03:54PM

Re: New Diesels for the D&S?/The Polar Express

trainrider47 August 01, 2018 07:56PM

Re: New Diesels for the D&S?/The Polar Express

declergn August 14, 2018 09:36PM

Re: 1225 & The North Pole Express

trainrider47 August 15, 2018 10:54AM

Re: 1225 & The North Pole Express

declergn August 16, 2018 09:58PM

Re: New Diesels for the D&S?

jim pallow August 02, 2018 07:30AM

Re: New Diesels for the D&S?

Sauerteig August 02, 2018 07:39AM

Re: New Diesels for the D&S?

jim pallow August 02, 2018 11:58AM

Re: New Diesels for the D&S?

Dirk Ramsey August 04, 2018 10:17AM

Re: New Diesels for the D&S?

AZ Railfan August 02, 2018 09:06AM

Re: New Diesels for the D&S?

CharlieMcCandless August 02, 2018 02:34PM

New Diesels for the D&S- lets be realistic

alcofan August 02, 2018 06:16PM

Re: New Diesels for the D&S- lets be realistic

Brian Norden August 02, 2018 06:29PM

Re: New Diesels for the D&S- lets be realistic

CharlieMcCandless August 04, 2018 07:16PM

K-28 on the C&TSRR

michael August 02, 2018 02:36PM

Re: K-28 on the C&TSRR

CharlieMcCandless August 02, 2018 02:42PM

Re: K-28 on the C&TSRR

kcsivils August 02, 2018 02:45PM

Re: K-28 on the C&TSRR

Bill M. August 02, 2018 03:22PM

Re: K-28 on the C&TSRR

Russo Loco August 02, 2018 05:22PM

Re: K-28 on the C&TSRR

hsuthe August 05, 2018 11:19PM

K-28 on the C&TSRR

michael August 02, 2018 07:44PM

Re: K-28 on the C&TSRR

kcsivils August 02, 2018 08:01PM

Evolving Business Model of D&S

Ron Keagle August 03, 2018 05:59AM

Re: Evolving Business Model of D&S-off topic

trainrider47 August 03, 2018 09:40AM

Re: Evolving Business Model of D&S-off topic

Will Gant August 03, 2018 11:26AM

Re: Evolving Business Model of D&S-Not off topic

Ron Keagle August 04, 2018 07:39AM

Re: Evolving Business Model of D&S-Not off topic

trainrider47 August 06, 2018 07:45AM

Re: Evolving Business Model of D&S-Not off topic

Dave Vollmer August 06, 2018 08:13AM

Re: Evolving Business Model of D&S

Ron Keagle August 08, 2018 05:33AM

Re: Evolving Business Model of D&S

usmc1401 August 08, 2018 03:39PM

Re: Evolving Business Model of D&S

pd3463 August 09, 2018 03:41PM



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