gunrunnerjohn posted:Remember, the T1 Duplex is an articulated locomotive, so the chuffs are quite different than the Berkshire, something to consider.
The T1 is a Duplex engine which uses simple expansion technology, resulting in 4 double chuffs, or 8-chuffs/revolution. The Berkshire only has 4-chuffs/rev. This engine came with only 2 double chuffs/rev, and I had it converted it to 4 double chuffs. You can hear the double cuff in this video.
Also, the center 4 drivers are too wide and may short out on certain switches. This does not seem to be a problem for most, but if it is the only cure I know of is to bevel the inside of these drivers to make them narrower at the track.
