@PaperTRW posted:Correct on all points, Norm. We were hesitant about making a wholesale jump to four-chuffs, as the sound could become a "machine gun" at typical toy train speeds.
However, it seems that Lionel has made the leap with virtually anything new, even the LC+ 2.0 0-6-0 that really didn't need it. Many of us actually reduced the 0-6-0 back to two chuffs as it was pretty bad audio wise with 4-chuffs.