ORIGINAL: MadMan_swe
MVVS 58 ............... it had never been started ................... and a 24x10 propeller.
After running it at 1/2 - 3/4 throttle for about 15 minutes I took it up to full throttle and I only got 4900 rpm.
I understand that the engine needs running in a bit more,
I realize the MVVS is a strong motor, but 58cc is 58cc, a 24x10 wouldn't be my choice for a break-in prop. I'd try a 22x8 for breaking it in then switch to a 23x8 and go from there.