Hi I will show you a never before seen minecraft trick!
Step 1: Tracks
Build a wheel or circle shape out of normal tracks. Than build right under it a straight power track like the pic.
Step 2: Carts
Place one cart on the power rail and push it in to the circle let it stop spinning.
Step 3: More
Push two more carts in.
Step 4: Four
Push one more cart in there should be four carts on the wheel. It will not stop spinning.
Step 5: Challenge
Post comments about what cool things it can be used for or post comments about future instructables. Every five days I will pick a different comment and if its you I will follow you and favorite five of your instuctables.