Asked this about 8 months ago… trying again…

I have some recent Roco AC digital sound locomotives I have tested in my analog C-track test loops.
They run well. Sound and lights come on, then revs up and moves smoothly. But some of them move relatively slow, even at the “highest” setting possible. I was wondering if there is a setting inside the model that makes them move a little faster. Have not tried pulling any cars yet. It said to run them 30 minutes in each direction for best results and I have yet to run them that long.But have run them 10 minutes or so that I think would loosen them up with no difference.

Thanks in advance for your comments.

Hi

We need to know more about the Roco model (reference number) and the first production date (if you can)
Was it purchased new or second hand?
Is it MFX capable?, DCC? MM2?
Pictures of the inside and of the decoder would help those of us having the same model to provide help. In fact this is a must.

Note: on Märklin decoders like the mSD3 mLD3 there are multiple CVs and one in particular to adjust the maximum speed in AC (CV79 for Fx Adjustments.
Roco never installed Märklin decoders but being able to look into the decoder full documentation would help. So this CV79 will not work for your decoder (just an example).

Please help us to help you by providing detailled information about your model.
Cheers
Jean

Thanks for your responses.
I will get the details and post asap.

In all cases muy Roco locomotives are new and recent.

About 10 monthscago I set up my test loops and I got the pueces to have one loop digital. But I got carried away linking and adding other loops and never used the digital control.
By the repkies I believe I will have to add the digital controller, even if it is to a piece of straight track, to make the changes to these “slow runners”.
Hooefulky that fuxes the situation. I’m very afraid of opening up the Roco locomotives. I feel comfortable with HAG and Marklin, but the insides of Roco are something else.
But from the respinses so far, it looks like the solution is digital. Initially I thought it might be some setting that I had to switch inside the loco.
Once I get the information posted here, I’m sure that with the guidance from the firum members, I have a good chance to solve the problem.
It is still surprising that the loco would come with a slow configuration out of the box.
The manfacturers are assuming everyone has a digital set up. Most of my locomotives are pre 2000 and my layout from 1993 to 2000 was analog.
I’m sure some day I will try out the digital, and that seems to be coming fast, even if it is to reprogram these sliw runners.
I appreciate all the input and as soon as I have some time I will post the detaiks of the locos and of the digital controler I have, still in its box!
Eduardo

First thing to check is that you have not activated "Rangiermodus" on the locomotives. This, as was stated above, will reduce the max speed and change the acceleration/deceleration settings. This can be corrected by pressing the corresponding F key.

The newer Roco digital locomotives have a Zimo decoder. I am not certain how much of the settings can be modified without using Zico's own controller.
When sound is activated, the sounds are timed to the speed of the locomotive. If you have somehow changed the settings, it is possible that it takes a long time for the locomotive to get to speed.
The instructions would normally show which CV value to adjust to change this.

There are also settings for acceleration and deceleration delay (not sound dependent) and max speed. The decoder instructions should provide the CV values.

Two questions:

1) How is the performance of the locomotives in question when the sound is turned off?

2) How is the performance of the locomotives when powered analog (not digital)?

I, too, have a lot of Roco models as not every model is made by mother M.
I have an ESU Programmer, but am thinking of getting a Zimo one as I am approaching two dozen of these locomotives these days.

I have not experienced any issues with slow runners. I have had a few issues that were solved by figuring out which function I unintentionally activated.

The test function on the ESU Programmer has been useful in checking the full range of functions that I cannot access with my MS2.

Regards

Mike C

You guys don't know how much I appreciate all the input.

My locomotive (I have others with the same problem. but I'm trying to keep this as simple as possible for my sake!) is:

Roco 79232
It is a CD BR 372

I can't imagine that I changed any of the settings on the locomotive. I only removed it from the box and placed it on the tracks. Ran it about 5-10 minutes in each direction at almost full power and the speed did not change during that time. Lets say it was going at 20-25mph scale speed at best.

If you buy this locomotive and you have a digital system, would you simply place the new locomotive out of the box on the tracks, or would you have to change something inside the locomotive itself to make it "digital ready"?

Again I'm completely ignorant on digital, but the instructions says:

Running in Digital Mode:
Remove the jumper from the interface

What does that mean?
This might not even apply to my AC locomotive as the paperwork seems to be the same for DC ACC and AC models.

If all it takes is to place the loco on tracks connected to a digital system, I can try that. As I mentioned before I had planned to use it in one of the loops but the decided not to.
Once I place the locomotive on the digital tracks, does the "system" recognize the locomotive and then I can do the changes digitally?

I don't have many of these slow runners, but if the fix is not simple, as crazy as it may sound, I will probably send them off to a man who has fixed several of my very old Marklin and HAG locomotives.
He also works Roco pieces. It will cost me some money, but being a new model, the fix should be simple and not that expensive. I just need it to run at an average speed
I simply don't want to open up the Roco locomotive. When I have in the past, there seems to be no room for any mistakes inside!

Again thanks for all the help.

Thanks Mike.
I’ll just have to set up a digital track and give it a go. Maybe some of this will make sense then.

No need to apologize. I appreciate you and others are trying to help me out.

E

Thanks Henrik
I will set up a digital loop and tinker with the CVs
Have only a couple of these slow runners.
I should just stick to Marklin and my old locomotives. The few AC LS Models are also fine.
Its the most modern Roco that are “finicky”.
Some of these more modern Roco models also suffer from what I call the “Crazy Ivan Syndrome”. They suddenly change direction on their own!

Thanks again!