Reker1000000 Posted January 7, 2023 I've been looking for a suitable replacement 12v DC motor for the Grey Era train motors since I opened 2 of mine and found that both had broken commutators, and haven't found anything so far. However, today I had an idea. Has anyone opened up one of the 12v motors from the Blue Era? Those were also manufactured by Buhler and ran on the same voltage, and I was thinking there might be a possibility that they could be used to replace the ones in the 80s motors. I may try this myself if I can get my hands on one of those motors. Thoughts? Or, if anyone has opened this type of motor, does it look like it could be swapped? Share this post Link to post Share on other sites
HoMa Posted January 7, 2023 A while ago someone mentioned this motor in a German forum: https://www.ebay.de/itm/182517404201 I have no idea which tools and knowledge is needed to replace an original LEGO/Bühler motor with such a motor? The 70's style motor inside the larger outer box only has a shaft on one side. But you need two, one on each side to power both axles. Here is the 70's motor at Bricklink: https://www.bricklink.com/v2/catalog/catalogitem.page?P=x551#T=C&C=11 Share this post Link to post Share on other sites
brummer Posted January 7, 2023 (edited) In the 1990s I repair some some "blue era" motors with diverent Bühler parts. In this time "Carrera" Slotcars use this typ of motor too. Maybe look there for parts. buehlermotoren-reste-klein by Torsten Wernecke, auf Flickr Edited January 7, 2023 by brummer Share this post Link to post Share on other sites
Reker1000000 Posted January 10, 2023 (edited) Ok, here's another idea I might try. @HoMa you're right, I realized the axle on the Blue Era motors wouldn't be long enough to power both sides. But, I found an excellent thread (linked in one of the recent 12v motor posts, I think) here about motor repair. The last post in the thread is about buying a new DC motor, taking the commutator off, and then putting it on the original Lego motor shaft. It looks like a fair bit of work and would require some tools and dexterity, but I think it could be done. This would work if the commutator is meant for the correct axle diameter (I think 2mm) and is meant for a 3-pole motor, like the Lego motors are. I will (at some point) buy at least one of these and try my hand at replacing the commutator on one of my 2 motor blocks with burnt-out commutators. I've found some potentially suitable replacements on eBay, so I will see about getting one or more of them to test. Edited January 10, 2023 by Reker1000000 Share this post Link to post Share on other sites
