The information in this forum revolves around Racng Lawn Mowers, PLEASE if you are using your lawn mower to cut grass do not modify your mower!!!! Modifing your mower to increase wheel speed or engine speed and or blade speed is VERY Dangerous and can cause severe life threatening injury's or even death. All racing mowers have their blades removed First before any modifications are done and are just that purpose built race machines. Even our Stock class mowers have their blades removed. So please remember modifing your grass cutter is a dangerous thing. ALL modifications spoken of in this forum refer to racing mowers. Again I can't say it enough PLEASE do not modify your grass cutting mower. We care about your safety.