Where do you get Rapicon and is it only 10 % oil ?
A bit low for my liking...
ps Flew the 185 red cdi today I am getting 7000 rpm on a rich setting with 20.5x10 PN Prop.
Probably can get 100-200 rpm more with leaner mixture let you know if I do later.
Compared to the 175 the mid range torgue on this engine is very impressive and the acceleration is much smoother with much less vibration.
A bloke at the club commented that it was quieter than electric......
rgds