Electric, Motor 9V 5 x 4 x 2 1/3 with Dark Gray Base : Part 2838c01 | BrickLink
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LEGO part x550a - Black Electric, Train Motor 12V 4 x 12 x 3 1/3 Type I Old at BrickScout
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LEGO Large Technic Motor 9V (2838) | Brick Owl - LEGO Marketplace
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LEGO® Power Functions Motor Set 8293 | Technic™ | Buy online at the Official LEGO® Shop US
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LEGO® Motor History
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LEGO 107 Universal Motor | Vintage lego, Lego, Lego sets
Vintage Lego Motor Set 107 from 1976. – Dockerills
LEGO Train BUHLER Black 4.5v 4v Locomotive 9V Motor - Not Tested | eBay
broken 4v motor - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
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LEGO 9V Technic Motors compared characteristics
Vintage Lego Motor Set 107 from 1976. – Dockerills
The old LEGO motors are still going strong | Michael's Domain
Technic Sets - LEGO 960 Expert Builder Power Pack Vintage 1978 Motor Set
LEGO Blue 4.5V Motor 12 x 4 x 3.3 with 6 Female Pins | Brick Owl - LEGO Marketplace
Old LEGO Engine 4.5 Volt A Batteries Complete with Box Instructions 810 Works | eBay
LEGO 9V Technic Motors compared characteristics
Found an old 4-volt motor, any way I can hook up a battery and switch to it? : r/lego
![MOD] Repairing an old 4,5v motor - adding a bit of Japan Tuning! - LEGO Train Tech - Eurobricks Forums](https://live.staticflickr.com/65535/49702008567_4e105c0b49_b.jpg "MOD] Repairing an old 4,5v motor - adding a bit of Japan Tuning! - LEGO Train Tech - Eurobricks Forums")