TCS Z2 Decoder Installation for the HO-Scale Bachmann Speeder performed by Carl Marchand, Tampa, FL.
Recently I was approached to install a DCC decoder in a Bachmann HO scale speeder. The challenge was intriguing; how to find room for the decoder without placing it on the "control deck", which is the easy way. Could the headlamp be illuminated?
After carefully examining the entire assembly and making a few measurements, I decided the best approach was to slightly modify the control deck by raising it 5.5 scale inches and carving out bits of plastic from the deck to accommodate a TCS Z2 decoder.
Summary of parts:
Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.
TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.
You can order this solder from the following retailers:
Digikey - PN:KE1110-ND
Techni-Tool - PN:488SO6775
When stripping wire, only strip a tiny little bit of the insulation. Strip no more than a 1/32 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire than half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire