Anyone know what rpm i should be getting out of a DA100 twin on a 27x10 prop? Im getting about 4650rpm, which seems a little low so I thikn the engine needs some tweaking, i have a suspicion that in the air one cylinder isnt always firing as it should. Its a new engine has only had jsut over a gallon through it so far so some running in is still to be done but i still think the performance is wide of the mark.

cheers
alan