The online magazine on the history and operation of vintage scale model trains in American OO gauge

Sunday, February 12, 2017

A short tale of driver springs

Among projects underway I am trying to get two S-C 4-8-4s running again. One came to me complete but not operable, and the other I refer to as the “Pierre” engine, Pierre Bourassa had converted it to a 4-8-2 with a Canadian cab but not real successfully. That one came to me in parts and the drive (original type frame) was in short a mess with non-standard drivers, etc.

Luckily for the Pierre engine I was able to locate (unexpectedly) an essentially complete “section 1” of the model, post-war version, which is the drive and frame, with wheels, almost assembled and missing some parts (but parts I had). Looking both projects over from that point I realized that both engines only had two of their four driver springs. The original drive produced for this model used a sand-cast bronze frame, but the post war version had a built up frame with sprung drivers.

My ace in the hole here though is I have a third “kit” for a 4-8-4 that is about 90% complete, and some additional parts beyond that, the product of years of sorting parts that came from various sources. So the good news was I had six additional springs; now both of these models have (or will have) four truck springs.

Another good news item is I thought the metal holding the drive gears of the complete model had warped, but actually I was able to get it to loosen up and work. Even more good news being the motor works too. So the next project for this engine is to convert it to a modern rectifier and I am optimistic it will run without too much further effort beyond the changes needed to the tender. Then on to the Pierre engine and other projects.

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