I had never checked my ignitions A & B at 2500 until now so I don't know if they were unequal before.
I recently developed a vibration that occurs between 2000 and 3000 RPM, it peaks at 2500. I have balanced the carbs, balanced the prop, replaced spark plug, trimmed ignition wires, swapped ignition module plugs all in an effort to find the source with no success.
The engine runs very smooth below 2000 and above 3000, with plenty of power.
The one thing that is strange is when I do an ignition check at 2500 the left drop is 60 RPM and the right drop is 150 RPM. at any speed below 2000 or above 3000 they are equal in drop.
I recently developed a vibration that occurs between 2000 and 3000 RPM, it peaks at 2500. I have balanced the carbs, balanced the prop, replaced spark plug, trimmed ignition wires, swapped ignition module plugs all in an effort to find the source with no success.
The engine runs very smooth below 2000 and above 3000, with plenty of power.
The one thing that is strange is when I do an ignition check at 2500 the left drop is 60 RPM and the right drop is 150 RPM. at any speed below 2000 or above 3000 they are equal in drop.
