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Offline Jack_Peters  
#1 Posted : 19 December 2018 02:50:21(UTC)
Jack_Peters

Canada   
Joined: 06/11/2018(UTC)
Posts: 11
Converting a 70 meter analog mixed K-track / M-track to digital control with a CS3. Prior analog control was with 3 blue transformers, #1 - level tracks, #2 - uphill tracks, and #3 - downhill tracks. This was done to get a constant speed for consists as much as possible. Also had about 25 or so red power wires distributed to the various sections of the 70 meters of track.

Step 1 - turn of all power, disconnect and remove all transformers.
Step 2 - disconnect all "red" power wires that were joined in common to each individual transformer.
Step 3 - create three (3) new insulated master section of the 70 meters of track to separate the power from the CS3 and the two (2) new boosters. Used new # 7522 insulators and # 385580 pickup shoe deflectors to separate the 3 areas. The # 385580 are used to prevent the power pickup shoe from momentarily bridging a point where the CS3 and a booster "short" the digital signal. The Marklin 385580 I identified as # 8993 which is a z-track item. There are 5 to a pack, the same piece with work for K-track and M-track.
Step 4 - Only hook up the CS3 to one of the newly created power sections, run a loco to make sure the wiring is OK, join up all the required (of the 25 or so red power) wires to complete the 1/3 of the 70 meters between the digitally isolated section. Place the loco on other sections to make sure there are no errant or hidden power wires still powering parts of the other 2/3 of the track.
Step 5 - Hook up booster "A", check for overloads, etc., to the next section and again, join up all the required (of the 25 or so red power) wires to complete the next 1/3 of the 70 meters between the digitally isolated section. Place the loco on other sections to make sure there are no errant or hidden power wires still powering parts of the last 1/3 of the track.
Step 6 - Hook up booster "B", check for overloads, etc., to the next section and again, join up all the required (of the 25 or so red power) wires to complete the last 1/3 of the 70 meters between the digitally isolated section.

Now you should be able to run the entire track with the CS3, run the loco at a very slow speed to see if there are any sections that have weak voltage, or are still isolated. I have put the # 585580 on two front tracks for easy install, but have now found that all the locos that run less than 1/3 speed, hiccup, when going across the isolation point. I will need to move the isolation points into a tunnel.

In the next few months I will convert the main station which is M-track to K-track for better performance. Will also start adding in approx 18 "blocks" with signals to convert the 70 meter single track to "block" control with the aim of running approx 14 locos at once.

Edited by user 03 March 2019 00:06:46(UTC)  | Reason: Not specified

thanks 2 users liked this useful post by Jack_Peters
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