Jim3826

Thanks to everyone who replied, I gave up with this in the end. Contacted retailer, Derails they aranged a painless return and replaced 66117 with 66100, which worked fine on JMRI and Z21.

So no idea what the problem was. But I must thank Derails and there excellent customer service.

Yes have tried the earlier app, on the I Pad, and the later app, on the I Phone. Dont have any Android devices to try. I would have thought it being the app, other than 66040 sound fitted loco works fine on both the Z21 and JMRI.

Clutching at straws here but I had allready checked the speed curve profile for both the 66 that works and the one that doesnt in decoder pro, they are the same. I tried resetting CV3 and 4 from 50 and 90 to 25 to see if there is a huge delay in acceleration on the chip. Made no difference.

The only difference between the locos is the chips, V4 works V5 doesnt. ??

Hi Paul

As i said originally the loco works in JMRI using decoder pro, all functions and throttle. Its just with the Z21 im having problems. I did try it with its default short address  (3) and using 6619 as a long address, no change with the Z21.

Im just about out of ideas now.

Thanks for the reply Sam.

OK the loco is ticked as active, have tried speed display in both mph, and km/p. Set to 128 speed steps.Have downloaded latest version of the app to I Phone.

Exactly the same all function keys work, but no response to throttle. With the sound on the engine sound does increas with throttle but no movement. There is just a low growl from the motor?

Yes added loco in railed vehicles, I have also run updater and updated the Z21 firmware.

Tried to download the latest version of the app, but in typicaly apple way, it says my old I pad doesnt support the latest version. Have however downloaded to my I phone so will try this later.

Hi Sam

Have tried Bachmann 66040 sound fitted, works with both Z21 and Decoder Pro. Have done a reset on Z21and using I pad app to control?

Just purchased Bachmann 66117 sound fitted, Loksound 5. Set up on rolling road using Z21 Black, all lighting and sound functions work but no motion forward or reverse.

What is really strange tried the decoder set up using same rolling road and DCC++ and JMRI decoder pro, all functions and motion work.??

Reset decoder from default adress 3 to 6617 exactly the same pk with JMRI decoder pro, no motion with Z21?

Anyone have any ideas.