Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Hi, Just installed a 60943 onto a V60 that I’m converting. For some reason the armature will not rotate more than a slight. Strong electrical noise can be heard. I’m using mSD3 decoder and I hooked it to another DC motor and it works fine. Sounds also work, so decoder is ok. Loco mechanics also work like magic when motor is off. After experimenting with another armature and even taking the motor off the gearbox, ”to run loose”, it won’t work. I took of the magnet, armature and motorshield in one piece to see if the armature rotates when it’s not connected to the gearbox, but no luck. How can such a simple device be broken? Some smoke even came out of the motor, but I’m not sure where exactly. Has anyone come across this before? I’ve notified the seller about the issue. Let’s see if I can get a new one. -Eino
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Ok, so I figured out what is wrong. The motorshield is a bit bent, also the two sides of the magnet are a bit loose from one another, but I’m sure the bent shield is causing traction.
I loosened the screws alot and the motor started running. I loosened so much that other issues started happening.
But it is clear that the motor shield is defected. It can be seem with bare eye.
Is it common for the 60943 magnet to be a bit wobbly?
-Eino
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Joined: 09/08/2008(UTC) Posts: 1,934 Location: Auckland,
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I’ve not had that problem before. I have had two kits with bent armatures from new, so I am not surprised to hear about what you have found
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 1 user liked this useful post by mvd71
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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So I filed the axel hole in the shield a bit larger in diameter and the motor now works. Only the noise is like from a coffee grinder, so it is not a viable solution. Hopefully I get a new product from the seller.
-Eino
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 1 user liked this useful post by einotuominen
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Joined: 10/02/2021(UTC) Posts: 3,963 Location: Michigan, Troy
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Eino, mine has sounded this way a bit from new. This model's ffirst axle drive gear off of the motor shaft gear is such that it even leaves gear marks on the inner wheel. If it isn't running smoothly, that's likely an issue with the retrofit armatur carrier not fitting the frame well. There were two differerent sizes/shapes.
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Originally Posted by: marklinist5999  Eino, mine has sounded this way a bit from new. This model's ffirst axle drive gear off of the motor shaft gear is such that it even leaves gear marks on the inner wheel. If it isn't running smoothly, that's likely an issue with the retrofit armatur carrier not fitting the frame well. There were two differerent sizes/shapes. This is most likely the case here… I wonder if there’s a Dremel solution… -Eino
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 1 user liked this useful post by einotuominen
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Joined: 04/08/2018(UTC) Posts: 1,169
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Something is not right, it should not be required to modify the motor shield. And it should not smoke. What is the V60 product number?
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 1 user liked this useful post by bph
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Joined: 10/02/2021(UTC) Posts: 3,963 Location: Michigan, Troy
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I have seen frames ground out to make extra room for the motor blocks. I don't recal the threads on here though. I think you need a milling bit. A Dremel might be strong enough. I know the Maxxon is for sure.
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 1 user liked this useful post by marklinist5999
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Joined: 10/07/2002(UTC) Posts: 3,298 Location: Patagonia
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Hello, the magnet should not be wobbly. it happened to me sometimes that the screws to fit the shield are too long and when fully tightened it presses against the gear causing the motor not to run, was solved just by cutting a little the screws, may worth a try. it is a good habit to see if the running gear is ok to make everything turn without motor coals installed before to go further in the conversion. regards |
 German trains era I-II and selected III, era depends on the mood, mostly Maerklin but i can be heretic if needed XD, heresy is no longer an issue.. LOL |
 1 user liked this useful post by franciscohg
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Originally Posted by: bph  Something is not right, it should not be required to modify the motor shield. And it should not smoke. What is the V60 product number? The model is 3065.
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Joined: 04/08/2018(UTC) Posts: 1,169
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Originally Posted by: einotuominen  Originally Posted by: bph  Something is not right, it should not be required to modify the motor shield. And it should not smoke. What is the V60 product number? The model is 3065. that model was produced over many years so there might be some variations....? if it helps here are pictures of my 3148. Had no issues with that locomotive and the 60943. Was the 60943 set brand new?  
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 1 user liked this useful post by bph
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Joined: 01/03/2016(UTC) Posts: 279 Location: Colorado
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Hello I checked my new 60943 and looked at the magnet and it has only a little bit of play what I have noticed before on other kits as well. As mentioned before the most likely culprit is the screws. You shouldn’t have to modify the shield. The frame in some cases has to be modified to make space for the magnet. Are you sure you have the correct kit? Is the kit new and unopened? If the kit was sold as opened it could have the incorrect 5 pole motor/anker with it that has a longer axle on it and that could be then a problem as well when you install the shield. Hope this helps.
Robert
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 1 user liked this useful post by DB Fan
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Originally Posted by: bph  Originally Posted by: einotuominen  Originally Posted by: bph  Something is not right, it should not be required to modify the motor shield. And it should not smoke. What is the V60 product number? The model is 3065. that model was produced over many years so there might be some variations....? if it helps here are pictures of my 3148. Had no issues with that locomotive and the 60943. Was the 60943 set brand new?   Thanks, I'll open my loco up and see if there is anything different in the frame... The magnet feels to fit in good though. Also the product was a new one in unopened box. I think I will try to add washer plates between the magnet and motor shield next... -Eino
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Joined: 10/07/2002(UTC) Posts: 3,298 Location: Patagonia
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Mmmm, Washers between shield and magnet could lead to rotor malfunction. Try to assemble the motor, no coals, no screws and check if everything moves freely Regards |
 German trains era I-II and selected III, era depends on the mood, mostly Maerklin but i can be heretic if needed XD, heresy is no longer an issue.. LOL |
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Originally Posted by: franciscohg  Mmmm, Washers between shield and magnet could lead to rotor malfunction. Try to assemble the motor, no coals, no screws and check if everything moves freely Regards I’ve assembled the motor without the motorshield and can manualy rotate the armature and the loco wheels will turn from it. Seller is sending me a new motorshield. -Eino
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 1 user liked this useful post by einotuominen
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Here's a video of releated components: I have two of these 60943 motors as the other one is going into an F7 sometime next week, but both seem quite identical... Unfortunately I don't have other motors available to see if they have such a gap in the armature housing inside the magnet. -Eino
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Joined: 16/02/2004(UTC) Posts: 15,466 Location: DE-NW
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Originally Posted by: einotuominen  Unfortunately I don't have other motors available to see if they have such a gap in the armature housing inside the magnet. The "magnet" consists of two large iron parts held together by a strong neodym magnet. Same for 60941 and 60944. Found this on the web: "Locos that require some milling or other adaptation are: 3000, 3013, 3016, 3029, 3030, 3170, 2670, 2870, 3064, 3065, 3131, 3141, 3149, 3087, 3090." Source: https://www.bogobit.de/decoder/dectype.html#60903In case of the 3000 loco, the screws are too long. It seems the 3065 loco has the same issue. Here is a report about a V 60 conversion: http://www.persmodelrailroad.net/cv2890.htmlMärklin know there is a problem with loco 3065. See page 21 in this manual: https://static.maerklin....870affb6101434542496.pdfIt is a pity this warning is not included in the 60943 manual. |
Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS  |
 4 users liked this useful post by H0
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Joined: 19/09/2022(UTC) Posts: 459 Location: Kaarina
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Originally Posted by: H0  Originally Posted by: einotuominen  Unfortunately I don't have other motors available to see if they have such a gap in the armature housing inside the magnet. The "magnet" consists of two large iron parts held together by a strong neodym magnet. Same for 60941 and 60944. In case of the 3000 loco, the screws are too long. It seems the 3065 loco has the same issue. Here is a report about a V 60 conversion: http://www.persmodelrailroad.net/cv2890.html Well there we have it! I installed a washer under the bottom left screw like in that report and everything works now. The grinding sound is a bit loud still though... I wonder if there's something to be done to that... Here's a video: https://youtube.com/shorts/fZo9hCsFqroThanks again guys, this has been a great thread! -Eino
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 2 users liked this useful post by einotuominen
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Joined: 10/02/2021(UTC) Posts: 3,963 Location: Michigan, Troy
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 1 user liked this useful post by marklinist5999
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Joined: 23/07/2014(UTC) Posts: 8,510 Location: ENGLAND, Didcot
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Originally Posted by: einotuominen  The grinding sound is a bit loud still though... I wonder if there's something to be done to that...
Try slackening the screws on the motorshield, and with the brushes removed, push the wheels with your fingers while adjusting the motorshield on the screws. Some people report that attempting to align the motor bearings by doing this improves running. Note you may need to be an octopus to turn the wheels while moving the motorshield then holding everything in place while tightening the screws.
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 2 users liked this useful post by kiwiAlan
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