Originally posted by Manticore
hahaha yeah, its a lump of moving metal actually. yes it is easy to understand but you still have the wrong concept about fuel/air still in the process of mixing after the carb and in the combustion chamber.
I have a rather simple example but it does illustrate what I mean. If you consider the barrel of the carb as a wind tunnel (it doesn't quite produce laminar flow... but certainly not turblence flow when it is full open!).
You know when they check the aerodynamics of car etc. by introducing a single point smoke source. Well that smoke source remains in a stream. It is vapourised into the air but remains in a stream ie. it is not 'fully' mixed at that point.
If you consider the smoke source in the wind tunnel as the fuel entry point in the carb then you will have the right fuel/air quantity but it is also not completely 'mixed'. This fuel/air quantity will further be mixed in the crank case and also as it enters the combustion chamber via different points... that is what I am talking about!!