BLI 7804 HO Scale Pennsylvania Q2 Duplex 4-4-6-4 Steam Loco PRR 6191 Paragon4 Hybrid Buffalo & Pittsburgh The Chain link has a

The Chain link has a perfect balance of forward drive and side bite which is ideal for hard packed or blue groove

Upper headlight with plain (no headlight) nose door

solid-state components in the form of “cards” controlling various locomotive functions that could be pulled and replaced as needed

Road number 3621

BLI 7804 HO Scale Pennsylvania Q2 Duplex 4-4-6-4 Steam Loco PRR 6191 Paragon4 Hybrid Buffalo & Pittsburgh The Chain link has aBLI 7804 HO Scale Pennsylvania Q2 Duplex 4 4 6 4 Steam Loco PRR 6191 Paragon4 Hybrid In 1942, the PRR built an experimental duplex drive freight locomotive, the Q1, with a 4 6 4 4 wheel arrangement. in 1944, after identifying a number of flaws with the Q1, the PRR built a second prototype, changing the wheel arrangement to a 4 4 6 4 and creating class Q2. This was followed by 25 production Q2 steam locomotives in 1945. These rigid frame four cylinder