ORIGINAL: jaka
Hi!
The MVVS 45cc (Evolution in the US) turns a 24x8 Mentz wooden prop at around 6600 rpm using the small MVVS cannister silencer (No 3206) and 95 okt fuel and 2,5% syntetic oil . 22x8 props on this engine is just too small. Rews too much.
Have you tried a 24x8 Mentz on the CRRC Pro???
I turned the JFX 23 X 8 between 6840 rpm - 6930 rpm on a stock muffler with 32-40 oz of fuel through a new engine.
I think with some run time and a pipe this engine would turn a 24 X 8 very well.
As far as giving an actual rpm number, I wouldn't know unless I tried one.