Carb Heat: What's the deal?
Under what conditions are light aircraft most susceptible to carb icing. I understand that in cold temperatures 10c and below and a close dew-point can lead to icing, however I recall reading something about icing occurring in far higher temperatures (20C etc.) due to the severe drop in the temperature of the carb venturi when the gasoline is converted from liquid to vapour . Is it a combination of outside temps, humidity and the venture temp drop? Is there a rule of thumb for “guestimating” when carb icing is most likely to occur?