Ref rpms on my fpe 2.4 i ran it yesterday and readusted the needles with the menz 19/10 standard like Jimmy says 6800 rpms i have the fixed ignition on mine i wish it had the sycrospark seems like the guys with the Brisons and fox 2.4 are getting way more rpms than with the fixed fpe ignition i will probally send it in to Kurt at fpe and get the up date done suppose to give about 400 more rpms theni could turn the 20'10 menz with authority. All summer i used the zinger 20/8 pro and it was ok but needed more pull for vertical .