Re: How cold have you operated your motorized bike?
15F; just two weeks ago. was 45F the day before yesterday, and 22F today. I have an X80 with an NT Speed, #75 jet. On the 45F day, I had the needle clipped 2nd from top. Had to move it down 2 slots today to richen it up for the thicker air. Tempermental little buggers, but well worth the effort.