See the new on / off switch I installed on my mower. The only downside is that I cover on the disc when it rains. I promise I will have a speed run soon show a bit 'of snow melts. This thing can rip! More than 20 MPH pretty easily. Feel free to ask me questions and I will do my best to answer. I can tell you how to install something like that. It 's very easy and inexpensive. I know some cutting to get better / very fast, but I'm still learning myself. Check out my othervids massive smoke lawnmower engine, close-up, etc. .. Thanks

http://www.youtube.com/watch?v=3h83YZ76PCQ&hl=en