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Engine basics => Engine set up tips => Topic started by: bob whitney on March 22, 2015, 05:18:01 PM

Title: engine going rich
Post by: bob whitney on March 22, 2015, 05:18:01 PM

ok after all the GREAT advise about an engine quiting after removing the Batt, i have my own problem

i have the origanal BMJR Stunt Champ ,about 3 years old .origanally had a Brodake 25 dieselized ,.flew great untill the engine faided ,as a glow it had too small of a tank. the tank was uniflow. and it was down on power.

this week i installed a new 3 oz standard vented tank and an FP25  engine has plenty of power ,but the problem is that from a dive, uprite or inverted the engine go's dead rich . i tried capping both vents one at a time and tried with both open. the engine has a standard OS 25 venturi ,so what am i doing wrong



         

Title: Re: engine going rich
Post by: Balsa Butcher on March 22, 2015, 05:52:20 PM

Using a suction tank. Try uniflow on muffler pressure, stock muffler or 3020 muffler from an OS-20, 9/4 prop and get back to us. 8)