funda !!!

anybody thinks ic engines has maximum effieciency at a certain speed?
wrong.
put it more specific, a moped [gearless; i don't want to mix gear ratio with effiency] , at what speed it has maximum effiency [km/litre],is there any definite speed which gives max efficiency?
no . as you ride less speed , you will get more efficiency. less the speed more the efficiency. anybody disagrees, will discuss then.