Originally Posted by
Micah78
I've ran my nitro trucks in the winter for years. Only thing I do different is use a heat gun to heat the motor up before starting it. You will also need to richen up your high speed needle a little because the cold air is denser than hot air. The denser air has more oxygen which means you need more fuel. Other than that I've never done anything different. The motors actually seem to run better when its cold out.
+1 I say this as I made the "rookie" mistake of thinking that since it is cold outside and I had been running in Hot weather I could lean out my motor more. Wrong answer. Keep settings the same and add a piece of tin foil wrapped around the head. Use the heat gun to prepare for starting and adjust your HSN as needed after you have ran it for several minutes.