(adsbygoogle = window.adsbygoogle || []).push({});
I got a pretty sick glitch in 1.1 minecraft to get you unlimited powered rails!
You'll want two sticky pistons, six powered rails and a button to make the glitch work.
Basically, put two pistons facing east with a one block space between them. In this space, put a block of some kind, it doesn't really matter what kind it is, so long as the block can have a button stuck to it. Put a button on it facing east, in between the pistons. This should trigger the pistons upon pressing. Now, put two powered rails in front of the pistons and leave a gap before laying out the other rails.
There should be two powered rails in a space ahead of the powered rails in front of the pistons. When the sticky pistons are triggered, the powered rails in front of both the pistons will be connected to the other two ahead of it, then when it's pulled back, it will face the same way it did to begin with. To get UNLIMITED powered rails, keep hitting the button that powers the pistons and there ya go. Unlimited rails.

Or just put a detector rail , then 3/2 powered rails , then rail , then repeat from beginning :/