I'm getting ready to start my second build. I have decided to run the 79cc HF predator motor. For the guys that run them, with the governor removed, what kind of rpm are you safely running? And for the guys who run them pumped up, say high compression, the bigger cam, stronger valve springs, free flow exhaust and bigger carb, what kind of rpm with your go fast set up? I'm trying to set up gear ratios and need to know what the top end is at rpm wise. I'm going to be running a moped rear hub laced to a 26 inch tire rim. The hub has built in reduction transmission of 12.5 to 1. . I want to run direct drive from motor to reduction hub, but ratios are not my forte. Any ideas out there for what size I would want for a motor pulley? Yes this is going to be belt drive. Thanks for help if you have it.