I recently picked up a “display only” 3rd rail B&O Q-4B from a fellow collector. It is in great shape, but when I went to test it there where some issues. After posting about what I believed to be a motor or drive belt issue, it is now very clear that the noise is due to the old EOB system that was used on this engine.
I have made the decision to go ahead and change the engine from EOB to ERR and have started removing electronics and ordering replacement parts. The idea is to replicate another 3rd rail engine set up I have. (See photos) While I have experience with MTH’s proto sound systems, this is something I’ve never done before and I will have questions. Any help or pointers are greatly appreciated.
At this time I have the following: Lionel Railsounds 4 powered mother board, Railsounds 5 board and chip set, ERR Cruise Commander set, new wires, leads, and connectors.
I am currently trying to figure out what replacement speaker I will need and weather or not I need to change out the tachometer sensor.
The speaker has no markings on it, see photo, but I believe it to be a 8 OHM .5w speaker. No idea how I would figure this out for sure. the same gose for the tachometer sensor. Considering that it came with EOB I believe the tachometer sensor is from the same supplier. I have no idea if it would work with the new ERR Cruise Commander.
Again any help and pointers would be greatly appreciated. Thank you!