I converted a 31cc Ryobi for CDI ignition fitted a balanced prop and ran it on a test stand.
I was disappointed with the vibration at idle and at high rpm.
I also have a mag fitted ryobi and find this vibrates at idle but not to bad at higher rpm.
I rebalanced the flywheel of the mag fitted motor and the vibration was worse than before.
I have therefore concluded that the ryobi does rely on a out of balanced flywheel for dynamic balance.
What suprises me is that the converted motors with CDI ignition and no fly wheel to balance them must be out of balance .
Do the successful Ryobi motors use an out of balanced prop to smooth them out.
Has any one been able to convert a sweet running ryobi and what is the secret to balancing these motors.