August 15, 2018 02:25PM
|
|
Registered: 16 years ago
Posts: 1,082
|
Chris,
Common North American practice is to mount traction motors at three points - two bearings on the axle, and a third on the motor to the truck frame or bolster. There are some exceptions, the GA8s being one, many LRTs have mono-motors, and some of the old heavy straight electrics used a variety of other arrangements.
To illustrate:
I believe this is the traction-motor gear-unit combination for GE 47 ton C&TS #19 posted on NGDF years ago by Carlos Llamas. The upper photo shows how the gear unit is mounted to the axle, and the double reduction gearing. By the looks of the remaining space, this arrangement might work down to 30" gage. The second photo shows the armature/brush access covers now in place on the traction motor. Notice the bolt and coil springs on the right hand corner. This is the third mounting point that not only will support the traction motor, but also deal with the torque applied in either direction. The parallel mount to the gear unit and need for the traction motor to extend past the wheel is obvious.
My photo - GE747 traction motor and gear unit on 36" gage truck. Far end of traction motor is supported by mount on bolster.
This is supposed to be off WP&Y 95 photo by Dick Bell - the two bearing surfaces for the traction motor to axle are easily visible. This would be a GHM842 traction motor which is a single-reduction axle-hung type. The pinion gear on the end of the armature turns the gear mounted on the axle.
Credit to Boerries Burkhardt for WP&Y 114 which would be a GE764 traction motor. The rectangular hole in the top of the motor is where the bellows to connect to the traction motor blower duct would be. On either side of the traction motor leads you can see the lubricant access for the traction motor axle support bearings. The far end of the traction motor would have a nose support for the third point. There isn't a whole lot of room to put any bigger motor between the axles. Trying to wedge the gearing and armature/brushes doesn't leave much room for the field and armature coils. The GE761 would be almost identical except about 3 inches wider.
Dan
Subject |
Author |
Posted |
|
gregcoit |
July 28, 2018 10:02AM |
|
kcsivils |
July 28, 2018 10:15AM |
|
Brian Norden |
July 28, 2018 12:27PM |
|
bcp |
July 28, 2018 10:18AM |
|
hank |
July 30, 2018 11:30AM |
|
michael |
July 28, 2018 08:20PM |
|
trainrider47 |
July 28, 2018 09:33PM |
|
James |
July 29, 2018 12:11AM |
|
Chris Webster |
July 29, 2018 11:06AM |
|
Will Gant |
July 29, 2018 05:42PM |
|
bcp |
July 29, 2018 05:52PM |
|
narrowgaugejoe10 |
July 29, 2018 08:50PM |
|
drgw0579 |
July 29, 2018 06:53PM |
|
tkautzor |
August 01, 2018 12:11PM |
|
Dan Robirds |
August 01, 2018 09:45PM |
|
Chris Webster |
July 29, 2018 08:24PM |
|
AZ Railfan |
July 30, 2018 01:34PM |
|
NGJunkie |
July 29, 2018 08:00PM |
|
tkautzor |
August 01, 2018 12:36PM |
|
Will Gant |
July 28, 2018 11:49PM |
|
John West |
July 29, 2018 07:31PM |
|
Tom Moungovan |
July 29, 2018 08:26PM |
|
Steam Fan 492 |
August 04, 2018 12:44AM |
|
Chris Walker |
August 04, 2018 03:42PM |
|
Dan Robirds |
August 09, 2018 05:28PM |
|
Chris Walker |
August 10, 2018 05:07AM |
|
Chris Walker |
August 14, 2018 04:11AM |
|
Mark Valerius |
August 14, 2018 08:35AM |
|
Mark Valerius |
August 15, 2018 07:34AM |
|
Dan Robirds |
August 15, 2018 02:25PM |
|
Chris Walker |
August 15, 2018 02:43PM |
|
Dan Robirds |
August 15, 2018 03:47PM |
|
Ed Horan |
August 15, 2018 04:16PM |
|
Dan Robirds |
August 15, 2018 04:32PM |
|
Ed Horan |
August 15, 2018 05:12PM |
|
Mark Valerius |
August 16, 2018 12:26PM |
|
bcp |
July 29, 2018 09:52PM |
|
usmc1401 |
July 29, 2018 10:52PM |
|
Earl |
July 30, 2018 02:20PM |
|
Brian Norden |
July 30, 2018 02:36PM |
|
bcp |
July 30, 2018 02:38PM |
|
Will Gant |
July 30, 2018 02:42PM |
|
Brian Norden |
July 30, 2018 02:54PM |
|
John West |
July 30, 2018 03:50PM |
|
Russo Loco |
July 30, 2018 06:45PM |
|
Earl |
July 30, 2018 06:56PM |
|
Russo Loco |
July 30, 2018 07:16PM |
|
HighCommander |
July 31, 2018 09:02AM |
|
Dirk Ramsey |
July 30, 2018 09:17PM |
|
Kelly Anderson |
July 31, 2018 07:32AM |
|
Dan Markoff |
July 30, 2018 05:07PM |
|
stuart olson |
July 30, 2018 08:49PM |
|
Will Gant |
July 30, 2018 09:12PM |
|
Earl |
July 30, 2018 07:23PM |
|
bcp |
July 30, 2018 09:25PM |
|
Jerry474 |
July 30, 2018 10:00PM |
|
Will Gant |
July 30, 2018 10:34PM |
|
Jerry474 |
July 31, 2018 07:58AM |
|
Earl |
July 30, 2018 09:30PM |
|
John West |
July 30, 2018 09:41PM |
|
bcp |
July 30, 2018 10:43PM |
|
John West |
July 30, 2018 10:56PM |
|
Mark Valerius |
July 31, 2018 07:33AM |
|
gregcoit |
July 31, 2018 09:00AM |
|
bcp |
July 31, 2018 09:02AM |
|
kcsivils |
July 31, 2018 09:13AM |
|
bcp |
July 31, 2018 09:19AM |
|
Will Gant |
July 31, 2018 06:13PM |
|
Brian Norden |
July 31, 2018 11:12AM |
|
Dave Vollmer |
July 31, 2018 11:17AM |
|
bcp |
July 31, 2018 11:32AM |
|
Mark Fuller |
July 31, 2018 10:07AM |
|
cdaspit |
July 31, 2018 11:31AM |
|
John West |
July 31, 2018 01:00PM |
|
stuart olson |
July 31, 2018 05:46PM |
|
Will Gant |
July 31, 2018 06:19PM |
|
stuart olson |
August 01, 2018 06:50PM |
|
Dirk Ramsey |
August 02, 2018 07:58AM |
|
Brian Norden |
August 01, 2018 09:31PM |
|
michael |
July 31, 2018 04:14PM |
|
Sauerteig |
July 31, 2018 04:28PM |
|
cdaspit |
July 31, 2018 05:53PM |
|
Will Gant |
July 31, 2018 06:21PM |
|
Sauerteig |
July 31, 2018 06:41PM |
|
Herb Kelsey |
August 01, 2018 03:28PM |
|
michael |
August 01, 2018 03:45PM |
|
Wayne Hoskin |
August 01, 2018 04:35PM |
|
Sauerteig |
August 01, 2018 04:52PM |
|
kcsivils |
August 01, 2018 04:58PM |
|
Sauerteig |
August 01, 2018 05:05PM |
|
John Cole |
August 01, 2018 06:13PM |
|
Sauerteig |
August 01, 2018 08:58PM |
|
Dirk Ramsey |
August 02, 2018 08:09AM |
|
Sauerteig |
August 02, 2018 08:38AM |
|
Chris Walker |
August 04, 2018 04:02PM |
|
Jerry474 |
August 04, 2018 04:43PM |
|
Chris Walker |
August 06, 2018 12:38AM |
|
Johnson Barr |
August 01, 2018 07:59PM |
|
Sauerteig |
August 01, 2018 08:19PM |
|
Earl |
August 01, 2018 08:26PM |
|
Sauerteig |
August 01, 2018 08:38PM |
|
John West |
August 01, 2018 09:38PM |
|
Sauerteig |
August 01, 2018 10:01PM |
|
John West |
August 01, 2018 10:19PM |
|
Sauerteig |
August 01, 2018 10:34PM |
|
John West |
August 01, 2018 11:34PM |
|
Sauerteig |
August 01, 2018 11:38PM |
|
Samart |
August 02, 2018 07:44AM |
|
Sauerteig |
August 02, 2018 08:24AM |
|
gregcoit |
August 02, 2018 09:09AM |
|
Sauerteig |
August 02, 2018 10:31AM |
|
drgwk37 |
August 02, 2018 09:19AM |
|
Sauerteig |
August 02, 2018 10:32AM |
|
Will Gant |
August 02, 2018 12:36PM |
|
Johnson Barr |
August 02, 2018 10:31AM |
|
Sauerteig |
August 02, 2018 10:37AM |
|
Popeye8762 |
August 02, 2018 04:50PM |
|
Samart |
August 02, 2018 10:51PM |
|
Russo Loco |
August 03, 2018 08:38AM |
|
Johnson Barr |
August 06, 2018 12:07PM |
|
Will Gant |
August 01, 2018 08:25PM |
|
kcsivils |
August 01, 2018 08:36PM |
|
Dave Vollmer |
August 02, 2018 10:56AM |
|
trainrider47 |
August 02, 2018 12:19PM |
|
Will Gant |
August 02, 2018 12:31PM |
|
Samart |
August 03, 2018 06:37PM |
|
Ron Keagle |
August 05, 2018 10:19AM |
|
Dave Vollmer |
August 05, 2018 11:57AM |
|
Will Gant |
August 05, 2018 11:59AM |
|
michael |
August 01, 2018 08:51PM |
|
gregcoit |
August 02, 2018 08:54AM |
|
JoeK |
August 01, 2018 11:22PM |
|
Popeye8762 |
August 02, 2018 02:00AM |
|
JoeK |
August 02, 2018 06:50AM |
|
trainrider47 |
August 02, 2018 01:54PM |
|
kcsivils |
August 02, 2018 02:00PM |
|
JoeK |
August 02, 2018 08:48PM |
|
michael |
August 02, 2018 08:51PM |
|
Jerry474 |
August 02, 2018 09:29PM |
|
JoeK |
August 03, 2018 09:40AM |
|
JoeK |
August 03, 2018 06:07AM |
|
Russo Loco |
August 03, 2018 08:15PM |
|
Russo Loco |
August 05, 2018 08:09PM |
|
Rader Sidetrack |
August 01, 2018 07:03PM |
|
tinticng |
August 01, 2018 07:50PM |
|
kcsivils |
August 01, 2018 04:54PM |
|
trainrider47 |
August 01, 2018 08:56PM |
|
declergn |
August 14, 2018 10:36PM |
|
trainrider47 |
August 15, 2018 11:54AM |
|
declergn |
August 16, 2018 10:58PM |
|
jim pallow |
August 02, 2018 08:30AM |
|
Sauerteig |
August 02, 2018 08:39AM |
|
jim pallow |
August 02, 2018 12:58PM |
|
Dirk Ramsey |
August 04, 2018 11:17AM |
|
AZ Railfan |
August 02, 2018 10:06AM |
|
CharlieMcCandless |
August 02, 2018 03:34PM |
|
alcofan |
August 02, 2018 07:16PM |
|
Brian Norden |
August 02, 2018 07:29PM |
|
CharlieMcCandless |
August 04, 2018 08:16PM |
|
michael |
August 02, 2018 03:36PM |
|
CharlieMcCandless |
August 02, 2018 03:42PM |
|
kcsivils |
August 02, 2018 03:45PM |
|
Bill M. |
August 02, 2018 04:22PM |
|
Russo Loco |
August 02, 2018 06:22PM |
|
hsuthe |
August 06, 2018 12:19AM |
|
michael |
August 02, 2018 08:44PM |
|
kcsivils |
August 02, 2018 09:01PM |
|
Ron Keagle |
August 03, 2018 06:59AM |
|
trainrider47 |
August 03, 2018 10:40AM |
|
Will Gant |
August 03, 2018 12:26PM |
|
Ron Keagle |
August 04, 2018 08:39AM |
|
trainrider47 |
August 06, 2018 08:45AM |
|
Dave Vollmer |
August 06, 2018 09:13AM |
|
Ron Keagle |
August 08, 2018 06:33AM |
|
usmc1401 |
August 08, 2018 04:39PM |
|
pd3463 |
August 09, 2018 04:41PM |