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31  Discussion Boards / Large / Aristo replacement parts from Bachmann? on: November 21, 2016, 01:04:15 PM
Now that Bachmann will sell the eggliner, perhaps it could see the way clear to make a few extra Aristo-style couplers and also motor blocks?

I believe there is a large market out there for spare/replacement parts. The "guts" of the Eggliner motor block will service thousands of existing Aristo 2 axle diesels.

Couplers wear, and being able to purchase replacements is another unique market Bachmann can have, since the Aristo-style couplers have unique characteristics to keep from uncoupling, and a LARGE installed base of users.

32  Discussion Boards / Large / Re: Bachmann Locos with Skates on: May 08, 2015, 10:35:18 AM
I suggest those interested read this thread and see pictures with proof of skates, where the recesses molded into the gearbox are shown clearly.

33  Discussion Boards / Large / Re: Large Scale Peter Witt Streetcar DCC interface on: August 05, 2014, 11:47:59 PM
Actually, the rear light should function as a brake light, so it's a little advanced as compared to the normal rear headlight function (as it should be).

The MOROP standard is a bit hard to follow, as for some reason, no "official" English translation is available, and the NMRA is really no help here, as they have had this standard "under review" since 2012.

I'm compiling the information myself, tracing out the connections.

Regards, Greg
34  Discussion Boards / Large / Re: What can be used to keep the rail from oxidation? on: August 05, 2014, 11:42:50 PM
I don't usually recommend anything left on the rails, but in this case, a light wipe with some kerosene or some other light solvent that does not evaporate quickly may help.

35  Discussion Boards / Large / Re: Large Scale Peter Witt Streetcar DCC interface on: August 03, 2014, 08:58:33 PM
Can you please give a link where this standard is?

I want the "version" of the standard that matches the Peter Witt streetcar.

Alternatively, please give the definitions of all 21 pins of the decoder, including those not connected.


Greg Elmassian
36  Discussion Boards / Large / Re: Large Scale Peter Witt Streetcar DCC interface on: July 30, 2013, 01:51:30 AM
Thanks! I'm the question raiser  Grin
37  Discussion Boards / Large / Re: New 1:20.3 Climax on: November 17, 2010, 06:22:54 PM
Jack, I looked at the pictures, I count 11 pins on one connector and 12 on the other.

Is that correct?

Thanks, Greg
38  Discussion Boards / Large / Re: Bachmann 2-6-6-2 Mallet QSI Aristo Help !!!! on: November 30, 2009, 08:17:19 PM
Tony and Stan maintain that Bachmann is right and Aristo is wrong, and Stan entreated me to call Tony Parisi at QSI (like I don't already talk to him once a week!)

QSI says Bachmann is wired differently from Aristo:

All I have said is that Aristo created and used the socket long ago. Finding an old scrap of paper that is different does not remove the fact that there are tens of thousands of Aristo sockets wired a particular way. That is the de-facto standard. If you were to make a product to work in the socket, would you pick thousands or tens of thousands.

But, I'll still do the youtube video... just have not had time...

(this is really silly if you think about it).

Regards, Greg
39  Discussion Boards / Large / Re: Bachmann 2-6-6-2 Mallet QSI Aristo Help !!!! on: November 24, 2009, 11:35:18 PM
Arguing is pointless, I will do a test to show what I say and will post on youtube for you.

All I am saying is that the connections on the pins in the K are backwards from the Aristo.

So who is the "standard", tens of thousands of Aristo locos over the years, or the way the K is wired?

Again, ONLY talking about the headlight and backup light.

Enough for now...

40  Discussion Boards / Large / Re: Bachmann 2-6-6-2 Mallet QSI Aristo Help !!!! on: November 24, 2009, 08:13:42 PM
So Stan, since the headlight and rear light work correctly in an Aristo, how do you explain them working incorrectly in Kevin's K-27? No history lesson needed here, it can ONLY be that the K27 is wired differently.

The Aristo socket is the standard now, a de-facto standard, the wiring of it existing long before any Bachmann loco had a socket.

The QSI was designed to meet this standard.

If the Bachmann is not the same (which is true unless Kevin is dead wrong), then, the Bachmann product does not meet the existing standard.

You cannot come in 10 years later and say there is a NEW standard! Will Lewis Polk tell you all of his sockets are now wired backwards? I think not.

Regards, Greg

p.s. putting the chuff on pins already defined pins was not smart, you have an entire second connector to use, go there. Don't fight history, find how to co-exist with it.
41  Discussion Boards / Large / Re: Bachmann 2-6-6-2 Mallet QSI Aristo Help !!!! on: November 24, 2009, 06:08:30 PM
Just a note.

The socket "standard" as far as motor polarity and lighting connections comes from Aristo. Sometimes motors are wired "backwards" in both Aristo and Bachmann with regards to the socket. Kevin found the basic control to correct the miswiring.

This is really common, unfortunately. Again, the problem is inconsistency of wiring in the locos, not a QSI problem.

The headlight thing is Bachmann, wired backwards. Otherwise, of course, all Aristo locos would be backwards. This seems to be a consistent problem in this loco, always backwards.

Again, DCC and QSI to the rescue to have the flexibility to handle these errors in assembly or design.

Moral: don't complain about all the CVs in a decoder, especially one with all these features, this extra "complexity" may save your butt in the future, like it did here.

One last bit of confusion: there is no separate "sound file". When you download firmware into a QSI, you are downloading an entire package, the control firmware and the specific sounds and settings you have selected. You can even customize some of the common CV values to different defaults, if you wish.

Well, it all seemed to end well, and Kevin got some of his first lessons in basic DCC and binary. Good for you Kevin, I'm happy to see you getting the hand of all this "DCC voodoo".

Regards, Greg
42  Discussion Boards / Large / Re: Help with QSI install 2-6-6-2 on: January 28, 2009, 12:57:58 AM
If you use the QSI programmer, it's no problem, and they give you 2 software packages, one does the sound downloads, the other sets's cv's.

If you are trying to program this unit on a DCC programming track, you might need a booster.

Try turning off the lights first, sometimes that helps.

Regards, Greg
43  Discussion Boards / Large / Re: Help with QSI install 2-6-6-2 on: January 17, 2009, 03:21:47 AM
The programmer will give you an error message...

1. read the loco info...
2. try reprogramming the loco, run confidence test first
3. if that works actually reprogram loco...

Not exact wording of error messages..

Make sure lights are off (switched off), too much load will interfere with the programming

Regards, Greg
44  Discussion Boards / Large / Re: Help with QSI install 2-6-6-2 on: January 16, 2009, 01:53:59 AM
The QSI can make this burst of sound and then nothing in several situations.

One is miswiring...

Another is that the QSI is not set for DC/Analog mode (most likely)

Another is that the QSI has not had the sound file properly programmed.

Another is that the QSI was not plugged into the socket correctly (don't ask me how I know)... really a variant of the first cause.

Regards, Greg
45  Discussion Boards / Large / Re: Hey There Mr Bachman, a question for you on: November 11, 2008, 02:23:31 AM
OK, so I assume the laws of physics still apply to G scale trains? (just being a trifle sarcastic)

If a given flywheel has little effect at higher speeds (because it's rotational momentum is not much different than the motor itself), then it is obvious that the same flywheel has much less effect at slower speeds, since it's inertia is that much less (due to the slower speed).

I need some help understanding why you want additional mass to help the BEMF circuitry/ algorithm. (It's really a computer program in a decoder).

Actually the flywheel can "mask" what the BEMF signal is trying to tell you. One use of BEMF is to correct the rotational speed of the motor against erratic frictional losses. A flywheel would "delay" the signal due to it's inertia.

Also, "high frequency" PWM should be pretty darn independent of the mass, BECAUSE of the high frequency, much higher than the fundamental/resonant frequency of the rotating mass.

A low frequency PWM system would "need" a flywheel more, since the lower frequency pulses have a better chance of altering the motor speed in a "non smooth" manner.

(I've wondered why Aristo bothered to put "flywheels" between their modular gearboxes, but I suspect it's just weight to help keep the center of gravity low.)

Anyway, help me understand if I have missed something in the laws of physics or basic kinematics or electrical theory above.

Regards, Greg
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