David Maynard said:
…
And by my saying that “we all have…”, I was trying to be diplomatic. My blood pressure is too important to get it up over a hobby.
Diplomacy is a fine art, never taught at the Swiss finishing school I went to. 
Stan Ames said:
…
“WARNING: in any cases a “C-type” should be used instead of a “D-type”, because Logic level outputs for FA3, FA4 are needed, especially locos from: Märklin, Trix, LS models, …:”
Please note that the Peter Witt is a LS model.
Sorry Stan, but the “LS Models” in ZIMO’s warning/caution is a European HO mfg located in Belgium, nothing to do with Large Scale.
Hans-Joerg Mueller said:
Mike Morgan said:
Fred , Hans , I do not hide behind pseudo babble , so try reading properly what I said —that is if you have reached the grade 4(junior) level that I used .
My messages to both of you were not ambiguous , unlike those you both use so that you can fall back in claimed innocence .
If you need me to explain the big words , ask .
Mike Brit .
Mike,
Tell you what, this will be the last reply from me you’ll ever receive to any of your posts. PERIOD.
Thank God for that , I’ve been trying to shut you up for quite some time .
Mike Brit
David Maynard said:
Ok, now that we have all gotten out shorts in a knot.
Did we ever answer the question as to why Bachmann is redesigning the board?
What could go wrong?
How bad will it go wrong?
And should I just park my streetcar in the barn instead of risking a catenary-stry?
David
While I doubt you will ever encounter the problem as you have been runing your streetcar for a long time, no one on this forum can answer your question.
If you have a concern you should post your question on the Bachmann Forum as they are the only ones who have the information you desire.
Stan
Why would ZIMO provide a “C” and a “D” version for the mtc21 interface?
The predecessor of the Märklin Softdrive Sinus motor was the C-Sinus motor, the C-Sinus motor needed all Group 8 functions (logic level) for motor control, Softdrive Sinus doesn’t i.e. there would be two “idle” function outputs.
Standard or no standard, it is perfectly logical to make those two outputs switchable, which is precisely what ZIMO did.
As posted yesterday:
Hans-Joerg Mueller said:
…
Since I haven’t been active in HO (SG) I’m just guessing that ROCO/Fleischmann made/makes extensive use of the MTC21 but without using the Aux3 and Aux4 as logic level outputs since they don’t use the SoftdriveSine motors. AFAIK the Softdrive Sine is a Märklin and Trix exclusive.
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.
…
Even if it is a Märklin legacy (not ROCO/Fleischmann) I kind of like it when another one of my many hunches gets confirmed. 
Hans-Joerg Mueller said:
Why would ZIMO provide a “C” and a “D” version for the mtc21 interface?
The predecessor of the Märklin Softdrive Sinus motor was the C-Sinus motor, the C-Sinus motor needed all Group 8 functions (logic level) for motor control, Softdrive Sinus doesn’t i.e. there would be two “idle” function outputs.
Standard or no standard, it is perfectly logical to make those two outputs switchable, which is precisely what ZIMO did.
Hj
I am discussing this with Zimo. The standard is very clear in this area and the other DCC manufacturers support the interface correctly as per the standard. Being creative in how you support a standard will create realistic smoke, which is apparently what happened in Greg’s case.
In both the C and D versions these functions are switchable. The difference is whether these switchable functions are normal to ground functions or logic level functions.
An interesting side note is that you can change a D version into a C version (and the C into a D version) by setting a specific value in CV8. This is in the decoder manual. What is not in the manual is an explanation that the D version does not follow the standard while the C version does.
Stan
Stan Ames said:
Hans-Joerg Mueller said:
Why would ZIMO provide a “C” and a “D” version for the mtc21 interface?
The predecessor of the Märklin Softdrive Sinus motor was the C-Sinus motor, the C-Sinus motor needed all Group 8 functions (logic level) for motor control, Softdrive Sinus doesn’t i.e. there would be two “idle” function outputs.
Standard or no standard, it is perfectly logical to make those two outputs switchable, which is precisely what ZIMO did.
Hj
I am discussing this with Zimo. The standard is very clear in this area and the other DCC manufacturers support the interface correctly as per the standard. Being creative in how you support a standard will create realistic smoke, which is apparently what happened in Greg’s case.
In both the C and D versions these functions are switchable. The difference is whether these switchable functions are normal to ground functions or logic level functions.
An interesting side note is that you can change a D version into a C version (and the C into a D version) by setting a specific value in CV8. This is in the decoder manual. What is not in the manual is an explanation that the D version does not follow the standard while the C version does.
Stan
You can have it/set it whichever way you require/desire i.e if you order a decoder from ZIMO and tell them which functions you want on Aux3 and Aux4 along with what sound you want e.g
ZSP00147; Standard; Elektro; Streetcar. Preset from the factory or the NA importer/distributor
Model Railroad Solutions ZIMO Agency of North America
Yikes, I just wanted to buy a freaking trolley! I have not checked in here for awhile but 7 pages later… I’m only having fun guessing what all of Greg’s deleted posts were about.
At least whatever the issue it won’t kill you if your keychain is too heavy.
Thanks guys but maybe we should put this to rest until there is a definitive answer.
-Brian
reckon I’ll just repaint one of my GAWDY Christmas Trolleys and run it on the line one day…
Brian Donovan said:
Yikes, I just wanted to buy a freaking trolley! I have not checked in here for awhile but 7 pages later… I’m only having fun guessing what all of Greg’s deleted posts were about.
At least whatever the issue it won’t kill you if your keychain is too heavy.
Thanks guys but maybe we should put this to rest until there is a definitive answer.
-Brian
Brian , my fault entirely . No excuses , I should have not pursued it so far .
Mike Brit
I dunno. I am enjoying my Bachamnn Peter DeWitt Streetcar a lot. No problems to report yet.
Well, maybe one. I didn’t buy 2 of them. 