Re: 18HP saga continues. Can’t get past 14mph and 3,900 RPM.

[stephenspann27]

quote BillW:

Now I bet if you go up an inch of pitch, you will see a slight improvement in speed and get the RPM back down a bit. Also, the speed improvement is great news; but with great power comes great responsibility….Don’t run it so lean as to burn it up. Find the sweet spot in the adjustment, half way between where it looses RPM from being too lean and looses RPM from being too rich. If anything, favor on the rich side. Now that you have the engine right where you want it, make sure it will last!

Agreed on the running too lean risk. Where I have it set right now, if I got even an 1/8th turn an either direction I loose 200 RPM. I’ll probably fiddle with it everytime I run the motor, because of weather changes etc. I had dialed it in with the cowl off. I put the cowl back on and it was out of wack again because of there being less airflow. Pretty finicky