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Posted - January 03 2014 : 08:33:25 AM
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I am in the process of trying to rewire a JWBowker for all wheel pickup and return. This engine has a cab-mounted motor, and I think it needs new motor brushes, the motor runs with jumper wires, but not without them. I have this idea of making new ones from either phosphor bronze or steel piano wire. Has anyone done this, or are replacement brushes available? I have a can motor that would probably fit, if I have the skill to do it.
I also want to add a headlight, if my modeling skills will permit. You guys make all this look so easy, but for someone like myself, it takes some real planning and careful procedures
String Bob
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Posted - January 03 2014 : 10:51:26 AM
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Can you post a picture of the motor? Different motors have their brushes arranged in different ways.
I'm skeptical of making motor brushes out of hard substances like steel and phosphor bronze, because the wear part would then be the commutator rather than the brushes.
I also wonder if the problem is in the brushes. Where are the jumper wires hooked up when the motor runs? In other words, are you bypassing the brushes and touching the jumpers to the commutator? If not, I would think the brushes would be okay if the motor runs.
Carpe Manana!
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Posted - January 03 2014 : 2:55:31 PM
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quote:Can you post a picture of the motor? Different motors have their brushes arranged in different ways.
I'm skeptical of making motor brushes out of hard substances like steel and phosphor bronze, because the wear part would then be the commutator rather than the brushes.
I also wonder if the problem is in the brushes. Where are the jumper wires hooked up when the motor runs? In other words, are you bypassing the brushes and touching the jumpers to the commutator? If not, I would think the brushes would be okay if the motor runs.
Originally posted by scsshaggy - January 03 2014 : 10:51:26 AM
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Shaggy:
I'll see if I can post a photo
String Bob
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MikeK
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Posted - January 03 2014 : 9:50:23 PM
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I agree with Schaggy. If the motor runs, the motor is ok. Go backwards through the circuit with jumper wires to find the fault. Wheels gotta be shiny to conduct, you know.
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Posted - January 05 2014 : 2:33:03 PM
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quote:I am in the process of trying to rewire a JWBowker for all wheel pickup and return. This engine has a cab-mounted motor, and I think it needs new motor brushes, the motor runs with jumper wires, but not without them. I have this idea of making new ones from either phosphor bronze or steel piano wire. Has anyone done this, or are replacement brushes available? I have a can motor that would probably fit, if I have the skill to do it.
I also want to add a headlight, if my modeling skills will permit. You guys make all this look so easy, but for someone like myself, it takes some real planning and careful procedures
Originally posted by String boBÂ -Â January 03 2014Â :Â 08:33:25 AM
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![]()
Well, I'm having mouse problems again, and cannot post a photo. I guess I'll have to buy a new mouse and treat the two I have to the WD-40/sledgehammer treatment
String Bob
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Posted - January 05 2014 : 3:03:11 PM
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quote:Well, I'm having mouse problems again, and cannot post a photo. I guess I'll have to buy a new mouse and treat the two I have to the WD-40/sledgehammer treatment Originally posted by String boBÂ -Â January 05 2014Â :Â 2:33:03 PM
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Here's how: http://www.thecomicstrips.com/store/add.php?iid=71066
Carpe Manana!
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Posted - January 05 2014 : 6:58:52 PM
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quote:I am in the process of trying to rewire a JWBowker for all wheel pickup and return. This engine has a cab-mounted motor, and I think it needs new motor brushes, the motor runs with jumper wires, but not without them. I have this idea of making new ones from either phosphor bronze or steel piano wire. Has anyone done this, or are replacement brushes available? I have a can motor that would probably fit, if I have the skill to do it.
I also want to add a headlight, if my modeling skills will permit. You guys make all this look so easy, but for someone like myself, it takes some real planning and careful procedures
Originally posted by String boBÂ -Â January 03 2014Â :Â 08:33:25 AM
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Shaggy, et. al. I finally got the photo of the motor from my JWBowker to upload. I think you'll be able to see where the problem is. I see several of these motors on Ebay BIN and I may be better off to buy one of those. The problem then is, where do I solder the power leads that drive the motor. Any help/advise/offers to do it for me :<) are welcome
String Bob
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Posted - January 05 2014 : 7:16:51 PM
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quote: quote:Well, I'm having mouse problems again, and cannot post a photo. I guess I'll have to buy a new mouse and treat the two I have to the WD-40/sledgehammer treatment Originally posted by String boBÂ -Â January 05 2014Â :Â 2:33:03 PM
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Here's how: http://www.thecomicstrips.com/store/add.php?iid=71066
Originally posted by scsshaggy - January 05 2014 : 3:03:11 PM
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Amen, brother, but Mike K has told me the error of my ways. I just hope it works!
String Bob
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Posted - January 06 2014 : 3:46:37 PM
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quote: quote: quote:Well, I'm having mouse problems again, and cannot post a photo. I guess I'll have to buy a new mouse and treat the two I have to the WD-40/sledgehammer treatment Originally posted by String boBÂ -Â January 05 2014Â :Â 2:33:03 PM
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Here's how: http://www.thecomicstrips.com/store/add.php?iid=71066
Originally posted by scsshaggy - January 05 2014 : 3:03:11 PM
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Amen, brother, but Mike K has told me the error of my ways. I just hope it works!
Originally posted by String boBÂ -Â January 05 2014Â :Â 7:16:51 PM
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I see the photo of my Bowker motor did not upload. I'll try it again. I'm thinking of bidding on a BIN motor on ebay if I can't get it to work other wise. I still need to know where to attach the power wires, too
/tyco/forum/uploaded/String boB/20140106154344_DSCF1348.JPG
String Bob
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Posted - January 06 2014 : 3:47:56 PM
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quote: quote: quote: quote:Well, I'm having mouse problems again, and cannot post a photo. I guess I'll have to buy a new mouse and treat the two I have to the WD-40/sledgehammer treatment Originally posted by String boBÂ -Â January 05 2014Â :Â 2:33:03 PM
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Here's how: http://www.thecomicstrips.com/store/add.php?iid=71066
Originally posted by scsshaggy - January 05 2014 : 3:03:11 PM
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Amen, brother, but Mike K has told me the error of my ways. I just hope it works!
Originally posted by String boBÂ -Â January 05 2014Â :Â 7:16:51 PM
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I see the photo of my Bowker motor did not upload. I'll try it again. I'm thinking of bidding on a BIN motor on ebay if I can't get it to work other wise. I still need to know where to attach the power wires, too
/tyco/forum/uploaded/String boB/20140106154344_DSCF1348.JPG
Originally posted by String boBÂ -Â January 06 2014Â :Â 3:46:37 PM
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At least my new mouse is working
String Bob
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Posted - January 06 2014 : 7:08:41 PM
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Bob, on the brush on the left, it looks like the spring has a big blob of solder on it and is bent so that the spring misses the slot into which it should fall to be able to push the brush down onto the commutator. Can that solder be cleaned off and the spring straightened to line up with the slot?
Carpe Manana!
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Posted - January 06 2014 : 7:33:49 PM
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quote:Bob, on the brush on the left, it looks like the spring has a big blob of solder on it and is bent so that the spring misses the slot into which it should fall to be able to push the brush down onto the commutator. Can that solder be cleaned off and the spring straightened to line up with the slot?
Originally posted by scsshaggy - January 06 2014 : 7:08:41 PM
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Shaggy: Thanks, you've given me something to investigate. For what it's worth, I ordered two BIN motors for this engine from Ebay today, and I have a small can motor that I may be able to press into service, too. I saw brushes for the AHM motors on Ebay somewhere, too, but can't find them right now. I've got to figure out how to fasten the power wires to the motor. I think that's where that blob of solder you mention came from. Maybe I'll be able to get some info off of the motors I ordered today
In the meantime, I have to make some decisions concerning my model railroad future, in HO or S. I enjoy both scales, but time and space are beginning to encroach, and I need to get things in better order in case my wife has to dispose of my stuff. I'll keep everybody posted, but right now I'd like to get these HO locomotives in working order. I only wish my skills were better. I'll post some more of my early stuff later on.
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Posted - January 06 2014 : 11:42:18 PM
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I have a couple of Rivarossi Heislers with the same motor and the wires are soldered to that same sheet metal tab that yours are soldered to, but with less solder. The trick to having less stray solder is to clean the tabs, then put a little flux on them then melt a thin film of solder onto them.
Next, clean and flux the ends of the wires and melt just a thin coat of solder onto them. I usually do this with just a small drop of solder on the end of the soldering iron.
Once the wires and the tabs have the solder on them, just touch them together and heat with the iron until the two coatings of solder melt together. It makes for a neat, strong joint.
It took me years of frustration before I learned the easy way.
One further pointer: Get the iron good and hot before touching it to the work. The faster you can heat the place you want the solder to go, the less time the heat has to travel to something you'd rather not melt.
Carpe Manana!
Edited by - scsshaggy on January 06 2014 11:43:54 PM
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Posted - January 07 2014 : 4:03:23 PM
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quote:I have a couple of Rivarossi Heislers with the same motor and the wires are soldered to that same sheet metal tab that yours are soldered to, but with less solder. The trick to having less stray solder is to clean the tabs, then put a little flux on them then melt a thin film of solder onto them.
Next, clean and flux the ends of the wires and melt just a thin coat of solder onto them. I usually do this with just a small drop of solder on the end of the soldering iron.
Once the wires and the tabs have the solder on them, just touch them together and heat with the iron until the two coatings of solder melt together. It makes for a neat, strong joint.
It took me years of frustration before I learned the easy way.
One further pointer: Get the iron good and hot before touching it to the work. The faster you can heat the place you want the solder to go, the less time the heat has to travel to something you'd rather not melt.
Originally posted by scsshaggy - January 06 2014 : 11:42:18 PM
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Thanks, Shaggy, I think I see what I have to do, now. I'll keep you posted
String Bob
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