Help! I have converted a couple of the 31cc Ryobis, but am stuck at about 6800 rpm. I have gone to smaller props and larger carbs, but still no gains. How do I identify the rpm limiting coils? What is a good coil and how do I identify it?
There are two sets of numbers on my coils. For example, there is the number RE 31837 in raised letters on the flywheel side of the coil, and 0 095 stamped into the front. Another example is 4036201 in raised numbers on the flywheel side and 3 038 in white letters this time on the front of the coil. The latter coil has a small square added to the top at the shorting lug. (I am using these as an example and have not run these tow to test them yet) The Phelon web site was useless. Someone out there has got to know how to identify the many different coils.
Thanks!!!!