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Stall Time vs. Motor Burn Out - Test Results Are In!
Joined: 02/08/2014(UTC) Posts: 783 Location: NEW JERSEY, USA
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Hello all you MARKLIN Lunatics of the world. Does any one really know, Just how long an analog Lok can sit stalled with lights on without burning up the motor? I stepped out for a bit (20-30 mins) and I had left a Br-44 going dead slow. When I had returned The old girl was just sitting there on a bad section of track, stalled. I used to do this intentionally when I was a kid...Just to hear the Lok say ''RRRRR - RRRRR - RRRRR''. Particularly the older Br-01. Thanks in advance for any thoughts; Mikey  |
I love the smell of smoke fluid in the morning . |
 1 user liked this useful post by analogmike
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Joined: 15/12/2005(UTC) Posts: 3,594 Location: Spain
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Originally Posted by: analogmike  Does any one really know, Just how long an analog Lok can sit stalled with lights on without burning up the motor? I stepped out for a bit (20-30 mins) and I had left a Br-44 going dead slow. When I had returned The old girl was just sitting there on a bad section of track, stalled. I used to do this intentionally when I was a kid...Just to hear the Lok say ''RRRRR - RRRRR - RRRRR''. Particularly the older Br-01. Are we talking about an older analog model, still with the old motor? -Or are we dealing with a modern digital running lok? Also, you do not say if the lok in question does no longer run after the stalling?! Because, a digital lok still receives full tension even when running slowly, while an analog lok recieves very little tension, when you want to run it slowly (Not taking into account any other mechanical/electrical faults with the system). So, an older analog lok will probably handle a 30mins stop better, as tension is so low; No damage to coals and brushes, and no damage to the windings of the armature. A digital lok, however, might suffer a lot, if the decoder is trying with more and more power to the armature, in order to get it moving. (On the other hand, a good decoder might be able to "cut off" for protection, when overheating) In reality I have had both older and newer loks stalling for many minutes at a time. (probably around 15mins max), without any damage. -But always with low analog tension, as mentioned. Edited by user 11 February 2019 14:01:20(UTC)
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 2 users liked this useful post by hxmiesa
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Joined: 02/08/2014(UTC) Posts: 783 Location: NEW JERSEY, USA
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Originally Posted by: hxmiesa  Originally Posted by: analogmike  Does any one really know, Just how long an analog Lok can sit stalled with lights on without burning up the motor? I stepped out for a bit (20-30 mins) and I had left a Br-44 going dead slow. When I had returned The old girl was just sitting there on a bad section of track, stalled. I used to do this intentionally when I was a kid...Just to hear the Lok say ''RRRRR - RRRRR - RRRRR''. Particularly the older Br-01. Are we talking about an older analog model, still with the old motor? -Or are we dealing with a modern digital running lok? Also, you do not say if the lok in question does no longer run after the stalling?! Hello Hx, Digital? Bite your tongue. Only analog here buddy. Old school motors and Blue traffos all the way! 30 mins. You say? Wow. Me thinks a trip to Ye old junk box is in order for an old lok to see just how long it can be done. BTW Yes if I raise the voltage the "Stopped" Lok will continue merrily on it's way. No damage. Mikey |
I love the smell of smoke fluid in the morning . |
 1 user liked this useful post by analogmike
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Joined: 11/05/2013(UTC) Posts: 488
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Did you add more smoke fluid before you ran it
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 1 user liked this useful post by SteamNut
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Joined: 15/12/2005(UTC) Posts: 3,594 Location: Spain
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Originally Posted by: analogmike  Digital? Bite your tongue. Only analog here buddy. Old school motors and Blue traffos all the way! 30 mins. You say? Wow. Me thinks a trip to Ye old junk box is in order for an old lok to see just how long it can be done. BTW Yes if I raise the voltage the "Stopped" Lok will continue merrily on it's way. No damage. Well, feel free to do the test, and dont forget to write the result here in the forum! ;-) In that case; As you run analogue like me, you probably already know that that kind of low voltage does absolutly no harm to the old rugged loks. After writing my first answer in this thread, I remembered that sometimes I have had disengaged waggons stopping just on top of a contact-tracks, continously triggering a signal coil. Now these coils work with the full 16Vac tension, and even affter several minuttes (however probably NOT as many as your 30mins) no damage was done. That´s what we love about the old rugged Märklin! :-) |
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 1 user liked this useful post by hxmiesa
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Joined: 01/03/2008(UTC) Posts: 2,883 Location: South Western France
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Originally Posted by: hxmiesa  Originally Posted by: analogmike  Digital? Bite your tongue. Only analog here buddy. Old school motors and Blue traffos all the way! 30 mins. You say? Wow. Me thinks a trip to Ye old junk box is in order for an old lok to see just how long it can be done. BTW Yes if I raise the voltage the "Stopped" Lok will continue merrily on it's way. No damage. Well, feel free to do the test, and dont forget to write the result here in the forum! ;-) In that case; As you run analogue like me, you probably already know that that kind of low voltage does absolutly no harm to the old rugged loks. After writing my first answer in this thread, I remembered that sometimes I have had disengaged waggons stopping just on top of a contact-tracks, continously triggering a signal coil. Now these coils work with the full 16Vac tension, and even affter several minuttes (however probably NOT as many as your 30mins) no damage was done. That´s what we love about the old rugged Märklin! :-) All true and in fact because analog loks and solenoids were fed with 50 (or 60) Hz AC, a blocked motor or a permanently energized coil becomes basically a purely inductive load (almost...) and current is "naturally" limited. This is also why , for example, even Fleischmann always supplied their signals and switches with AC . yes, that's what makes them so rugged! Cheers |
Jacques Vuye aka Dr.Eisenbahn Once a vandal, learned to be better and had great success! |
 4 users liked this useful post by jvuye
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Joined: 02/08/2014(UTC) Posts: 783 Location: NEW JERSEY, USA
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Originally Posted by: SteamNut  Did you add more smoke fluid before you ran it I filled the stack before it stalled and it was the same afterward. |
I love the smell of smoke fluid in the morning . |
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Joined: 02/08/2014(UTC) Posts: 783 Location: NEW JERSEY, USA
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OK, I did it. Lok-3066 9- volts AC at the track, (No Lok) 6- Volts AC at the track, (Lok on track) Test Time- 3 hours Results- Lok fine. Motor Bogie warm temperature, Not as warm as if Lok were running. Traffo- Normal, warm, OK Conclusion: Mikey  |
I love the smell of smoke fluid in the morning . |
 5 users liked this useful post by analogmike
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Joined: 16/11/2011(UTC) Posts: 5,845 Location: Hybrid Home
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Was that a planned or an unplanned intervention ?
;o) |
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Joined: 02/08/2014(UTC) Posts: 783 Location: NEW JERSEY, USA
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Originally Posted by: Alsterstreek  Was that a planned or an unplanned intervention ?
;o) Intervention was planned. After three hours I felt it was unnecessary to gather more data. |
I love the smell of smoke fluid in the morning . |
 1 user liked this useful post by analogmike
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