[cabmandone]

Something else I'm working on is getting a functional tachometer on it to see exactly what RPM i'm hitting. I have read where the EX27 can run upwards of 5000 rpm safely with the valve springs that are in the engine. I bought a digital tach that uses a wire wrapped around the plug wire (5 wraps) and set it to 1P2r (1 spark for every 2 revolutions) as that's what I have found should be the setting, but I'm still not getting what I think is an accurate RPM reading. I'm topping out at 3200 rpm @ WOT and not building as distance increases.

There is a very noticeable difference in how the engine winds from no load to load. It's like I'm hitting a wall and it won't build more RPM. I'm thinking gearing has a lot to do with it.