Carl,
there is (or was?) a flywheel with a 2.00mm hole for some Lionel Legacy engines: From the Lionel webside''replacement parts' , replacement part number or name''
6208557128 FLYWHEEL W/ ENCODER WHEEL / LEGACY / 2 mm thd
I would not try the install a flywheel with a 2.3mm hole in a 2.00mm shaft. You cannot overplay th etolerances and the flywheel would move like an egg.
At Timko Repair Depot maybe you can get the tool to remove the original flywheel without damaging the shaft.
Timko Repair Depot
349 Grange Hall Rd., Beavercreek
Ohio, 45430, USA
937-429-1461
FTimko@sbcglobal.net
The allocation of pins for the correct connections between the board and the trucks you can find in Bruk's wiring diagrams.(they are stored in this webside)
Before you connect the truck cables to the mother board, you should meter the pins installed in the truck to be secure what is allocated to the roller pick up(center rail), to the outer rails and in addition the coupler connections. The color of the cables may vary.
Basically I fasten the flywheel with encoder to the back motor in the transplants of electronics that I did in the past.
Keep in mind that you still have a worm wheel gear that can be self blocking during starting. That can occur in areas where you might have a weak Legacy signal or the two motors installed have small differences in operational behavior. Mostly that can occur if the locomotive is not charged by cars. If you have attached a train, the probality of self blocking at starting turns to zero according to my experience.
Best regards and much success
Albrecht
