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I used the plans of Jan de Ridder and had to adapt it a bit.
1: a round tank gets a smaller surface as it uses petrol and the engine starts to run slower so i made it square.
2: the inlet regulator was to sensitive so i made a 3 way valve on witch i only adjust the 50% bigger air intake.
in this way its easier to put a remote servo on it.
the intake valve is a ball bearing ball of 5mm in a 1/8 npt copling with a small spring and a adjustable hollow plug m7 fine bore6.5mm.


 

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