Q: Bachmann 0-4-0 drivetrain same 1/22.5 as 1.20.3 versions?

[vic]

Do the two different scaled Bachmann sidetank switcher, the 1/22.5 version and the 1/20.3 version share the same drivetrain? motor, wheels, pistons, etc?

The reason I ask is that I have a 1/20.3 saddletanker, bought used,  thats motor is Phhtt! I want to fix it but was considering simply replacing the entire drivetrain from the 1/20.3 side tanker onto the body of my 1/20.3 saddletanker if possible. If they are too different can the motor from a 1/22.5 version be swapped into the 1.20.3 version?

Are there even replacement parts available?

[Bucksco]

Pretty sure you can't use parts from the old 0-4-0 on the Spectrum switcher. You should contact the service department directly to see if replacement parts are available for your loco.
http://www.bachmanntrains.com/home-usa/service_2010.php

[vic]

Pretty sure you can't use parts from the old 0-4-0 on the Spectrum switcher. You should contact the service department directly to see if replacement parts are available for your loco.
http://www.bachmanntrains.com/home-usa/service_2010.php

Unfortunately according to the Parts listings on the website there are no parts currently available for the Porter. The 2-4-2 I know has a very different drive block. So that wont work.

So back to my other question, is the drive chassis from a 1/20 sidetanker interchangable with the 1/20 saddletanker? I have submitted a request online to the service dept as well.