"It's a great motor, little torque, but good for small builds. I was having problems with my wire when I was freebuilding(no instruction building) a Gold Rush Washplant, i had to have my wire at a certain angle to get it to work. Then, after using it real quick for a test I turned my battery box off, 10 or 20 seconds later I turned it back on and my engine gave no response. I tried angling my wire in different spots and every thing, even unplugging it from the battery box, then putting a crank on the engine, hooking the wire to the lights, the spinning the crank. I did this because when I first received the motor I found out that when you do this, the lights flicker, but today, no response. Over all, the motor can be challenging to make it do certain things,expecially because of it being so hard to hold the engine down,and the lifespan of the product is not very good. I most likely will not get this product again, but can I please get contacted by an Lego Official about my problems, Please."