B, Key Drawings Model 401, 4-Track Yard (Largescale)

* Model 401 * (aka 1653/1654) Video #644 A Introduction B Key Drawings C All Const Dwg D All Oper Dwgs E About The PDF's * PDF Directory   Latest design is   Model 402 Special 2-piece track unit wiring   (9L09) - * G Plans * 1 AutoControls Home 6 Plans Index 7 Museum   (Previous Plans ) 8 Special Parts 10 List of Videos ~~~~~~  1-trk (Mdl 106)  2=trk (Mdl 206)  4-trk (Mdl 402)  (9L13)

List of Drawings, shown BELOW on this page:  --11" x 17" Construction Sheets-- Drawing #35 -Track Unit Drawing #38 - Track Wiring Drawing #39 - Template For Helper Control Unit Drawing #41 - Parts List & Costs For Helper Control Unit Drawing #42 - Parts List & Costs For Track Unit --11" x 17" Interface and Operating Sheets-- Drawing #46 - Signal Light Drawing #49 - Schematic Drawing #50 - Sequencing Schematic   What This Section Shows You This section shows you the "KEY" (most important) drawings for Zellner Yard, as supplied in drawing set Item 9. The next 2 sections show you ALL the drawings that have been developed for this system. Other Comments You use the #1651 Main Control (Sheet 09 as shown below, part of Drawing Set Item 4) from the Two-Track Block Drawings, as the Main Control Unit for Zellner Yard. May 2006 Note - When To Use The Model 402 Template Use the Model 402 template (added May 2006) described in Section C1, if you want to build a 4-track control unit from "scratch", rather than expanding a 2-track unit. The Model 402 Yard uses most of the drawings from the earlier 1654 design (Sections D1 thru D4), but there are 3 new drawings created for the one-piece control unit: Cover Sheet, template, and parts list.

Drawing #35 - Track Unit

Photo of #1654 Track Unit).

Drawing # 38 - Track Wiring

Drawing #39 - Template For Helper Control Unit

Photo of #1653 Helper Control Unit).
The template drawing Sheet 39 is colored, and plastic-laminated, so you can cut it out,
glue it to a wood base, and attach all the parts and wires.

Drawing #41 - Parts List For Helper Control Unit

Drawing #42 - Parts List For Track Unit

Drawing #46 - Signal Light

Drawing #49 - Schematic

Drawing #50 - Sequencing Schematic