speed matching and older e-7 to newer e-7 ?

Model Railroader Electronics and DCC
1

hey there all got some of my FIRST dcc projects going number 1. is trying to match an older p2k e-7 that I put a dh163 p into to a new p2k w/ dcc/snd . note im using a zepher to program and have only fooled with the older unit w/dh163 slowing it down useing cv 2 cv6 &cv5 ,I got em pretty close but not exact …I think one problem is the newer one uses differant gears … Im watching the couplers in differant speeds there close but it seams that one is reacting to speed changes faster than the other but then catch up, if that makes sence …any how anyone else try this & HOW CLOSE is is close enough…but hey im learning ,got to tell ya a bit nervous about hit those program buttons… oh got a pr3 & a decoderpro jmri somthing on its way (like the big boys doit) thanks J.W.

2

Ok, follow these steps.

  1. Reset BOTH locos (CV8=8).

  2. Take the Slower unit and set CV2 until the unit starts to crawl at speed step one. Reprogram the address.

  3. Set your top end speed using Cv5.

  4. Set CV6 to be half of 5.

  5. Take the Faster unit and set Cv2 until the unit starts to crawl at speed step one. Reprogram the address.

  6. Put both units on the track and consist them.

  7. Adjust CV6 on the faster unit (by using OPs mode) until both units have the same MID speed (50% throttle).

  8. Set CV5 to be twice of Cv6. Check setting by running both locos at top speed.

  9. Un-consist and have fun.

They are now speed matched.

David B

3

Which will be MUCH easier once your PR3 arrives and you hook it up, as unless you have a DT-series throttle to use with your Zephyr you cannot know exactly which speed step you are at.

–Randy

4

thanks guys ,yea I had a feeling I needed the better controler when Dave mentioned speed step one Im guessing with the zephers rotary handle…now do people try to speed match ALL there equip.in there stable or just certain types of equipment ? also david mentions ops mode does the zepher have that option, Iv herd the term but dont recall seeing it but then again Im total green an fooling with the programing is a bit intimmidateing for me ,so I use the program track &page mode so I can only screw up one at a time … but every time I mess with it ,it becomes a little easyer to understand …THanks J.W.

5

Jerr, in your situation, I would suggest you buying a DT400…or wait until you hook up your computer. The DT400 (or 402) will show you speed steps.

David B