Hans-Joerg Mueller said:
I don’t know how many functions ROCO and Fleischmann use, but using Aux3 and 4 as “normal” function outputs would give them two extra outputs. Hence ZIMO makes the MX634D and MX632D — probably as replacements for legacy OEM decoders in ROCO and Fleischmann engines.
But now Stan comes the real question, does the Peter Witt have a SoftdriveSine motor(s) or what exactly is a • precision can motor?? (Maxon, Faulhaber???)
HJ
Aux 3, 4, 5, and 6, are simply additional functions for controlling such things as lights or couplers.and have nothing to do with the motor used. There are other pins on the 21 MTC connector reserved for the unique features of SoftdriveSine motors which are unused for traditional motor operations.
The Bachmann Peter Witt uses Aux 3 to turn on the brake light while the car is moving. Most historic streetcars do not have brake lights. The Baltimore Peter Witt does and as a licienced streetcar motorman I use the brake a lot and if running in a street, I would find a working brake light a real benefit.
The motor used in the Peter Witt is a small but powerful new generation high efficiency motor. There is one in each truck and if you look at the size of these trucks you can understand why size is a real issue.
It is not a protoipical design as a 4 motor car should have one motor per axle but then we are not using 600VDC for operation either
From a technical standpoint I believe it is a traditiional core motor design.
Stan