After adjusting the head speed down and readjusting the mixture I found that I am now getting that overspeed problem in between hover and full climbout. I can't wait for my 9Z, 13 throttle curves will be VERY helpful to me. My idle is lean but fine, my midend is rich but fine, my 3/4 throttle is lean and my top end is fine. Fuel pumps and tuned pipes do funny things to OS engines, but I sure love 'em!


OK, now at what head speed does the wierd rappy oscolation start? Is it 1400? If so I'm guessing That at 1500 my engine runs really smooth and at 1700 it starts to act funny and at 1900 it runs a little rough. Have in mind these are all guesses since I do not have a tach.