Hey guys, I need some advise for selecting a right carb setup for my 55cc single engine.
The engine should be running at low rpm.
I did some calculations and I set the maximum rpm to 3000 rpm.
The output of the calculation gives a idea what the diameter of throat and main nozzle should be.
The engine pump air with a fictional volumetric efficiency of 100% an air flow of 1.37 L/s or 5 m3/h.
This gives a diameter of throat of 4.8 mm and a main nozzle of 0.24 mm.
My question is, what are reasonable dimensions for the carburetor?
And what is useful to start with? This is my first homemade engine, and my goal is to get it running.
I have search for moppert carbs, like Bing 10mm (Puch). Doesn't know what the diameter of the throat would be.
Or a carb from the nitro RC engines:
https://www.rcplanet.com/traxxas-carburetor-trx-pro-15-6-0mm-bore-tra4033/I have also seen that engines run on a petrol vapor carburetor.
Thanks in advance!