![Why do Power Functions motors need internal gearing - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums Why do Power Functions motors need internal gearing - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](http://www.brickshelf.com/gallery/brdavis/PowerFunctions/xlpfe.jpg)
Why do Power Functions motors need internal gearing - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
![DC Gearbox TT Motor to LEGO® compatible Cross Axle : ID 3810 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits DC Gearbox TT Motor to LEGO® compatible Cross Axle : ID 3810 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/3810-03.jpg)
DC Gearbox TT Motor to LEGO® compatible Cross Axle : ID 3810 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![Amazon.com: LEGO Technic Power Functions Motor Set 8293 (10 Pieces) (Discontinued by Manufacturer) : Toys & Games Amazon.com: LEGO Technic Power Functions Motor Set 8293 (10 Pieces) (Discontinued by Manufacturer) : Toys & Games](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/81nbOSavkeL.jpg)
Amazon.com: LEGO Technic Power Functions Motor Set 8293 (10 Pieces) (Discontinued by Manufacturer) : Toys & Games
![Amazon.com: PHYNEDI Goshfun 20Pcs Motor Power Modification Accessories Building Set for Lego Technic, 2X M-Motors, 4X L-Motors, 2X XL-Motos, 6X Battery Box, 4X Receiver, 2X Remote Control : Toys & Games Amazon.com: PHYNEDI Goshfun 20Pcs Motor Power Modification Accessories Building Set for Lego Technic, 2X M-Motors, 4X L-Motors, 2X XL-Motos, 6X Battery Box, 4X Receiver, 2X Remote Control : Toys & Games](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61zd9HobFIL._AC_UF894,1000_QL80_.jpg)