My last post on the new format web page posting pictures caught me out slightly. The acrylic mounting and index plate has ensured good servo to point alignment Further progress has been made with 3.0 mm cork to raise the track for drainage detailing later on between the platforms. DCC track dropper wiring and point bonding to stock rails is being done to provide for future development because at this stage a DC operated layout will be my starting point. The track is now pinned ready for ballast, but I’ll probably hold this off until I’ve got the second module made and fitted to the first module to check the rail and platform alignments.
My other challenge will ensuring that the platform and the diorama joints are as close as nearly invisible. For the platform width and height, I used a Mk 3 HST 125 Intercity sleeper to give me clearance for the platform curve radius and found that the OO Gauge Standard Dimensions Chart was a great guide.
BTW I also found that rail joiners come very handy for centralising point throw bars. Being half blind, finding the hole in a Peco point throw bar for a servo motor drive was for me a
learning curve that gave me tunnel vision. Apart from Tortoise, Cobalt and solenoid under baseboard point motor mounting there are scant mentions for of how you ‘experts’ do it.
I found by using a longer throw wire length (painted white on its very end), a back light from the track behind to shine through the hole the process was achieved easily. I’ll be a real ‘expert’ on the last one after 20 points!
The double slip was an issue as the servo 0.6 mm arm wire being used would not throw the point blades sufficiently across. The increased flex may have been due to the combined thickness of the 12 mm ply baseboard, the 3.0 mm cork and the 3.0 mm acrylic Index/servo mounting plate. However I found up sizing to 0.8 mm piano wire did the trick and the desired operation of the double slip was achieved. Although the single points operated OK, I also increased their arm wire to 0.8 mm to avoid any potential problems later.