HO MODULE HANDBOOK Fourth Edition - November 2009

Transcription

1 HO MODULE HANDBOOK Fourth Edition - November 2009

2 HUB MS- OF /0/09 eference: Purpose: Concept: NMRA Standards and Recommended Practices, MS-.0, MRP-, MS-.3, MRP-.3, S9 To establish a uniform set of standards and specifications for the construction of modules suitable for HO gauge model railroads. To provide through a system of simple modular construction a model railroad system that meets the following criteria:. Expandable in all directions. 2. All modules fully portable. 3. Realistic operation with prototype length trains.. Designed for: (a) Individual home layouts where mobility is a factor. (b) Division members to gather together and set up a temporary layout. (c) Regional or National meets where a large space might be available. (d) Model railroad shows to promote the hobby. 5. Provides a basic foundation for all modelers regardless of skill to display their likes and talents.. Constructed of readily available materials and quickly assembled for operation. 7. Flexibility to change with new innovations and developments. Basic Module Size: Straight Module - 2" x 8" (not including width of fascia board, /8" and backboard, ½"). Module depth may be increased to 30" max. Corner Module dimensions as shown in section (2). Return Loop Module dimensions as shown in section (3). Module Sets: Module sets may be constructed using combinations of modules that are multiples of 8", i.e. 2-8" modules, 2-72" modules, etc. providing that the total length of the module set is a multiple of ft (8") The only requirement is that the track centerlines, track ends, and electrical interface at the ends of the Set adhere to the specifications. Track position, and module construction within the set may be of the builder s choosing. Module Height: Floor to top of roadbed = 0" Clearances: Track: Vertical from top of rail = 3" minimum Horizontal from center of track = " minimum This applies to, but is not limited to, all bridges, buildings, signals, and tunnels. Code 00 Mainline track is preferred, The railhead must be 0.7" above the roadbed. This corresponds to ATLAS Code 00 or Code 83 track. Hand laid track is acceptable providing the roadbed to railhead dimension is maintained. All track off the Inside main line on a two track module must be electrically insulated from main line and powered from the Local power bus. Any track behind the Inside Main Line can be built as the modeler desires. For modules using the optional third track, any track behind the local track can be built as the modeler desires. Mainlines: Centerline of outer main track is measured 5" from front face of front frame member, not from fascia board. Centerline of inner main track is 7" from front face of front frame member. Preferred track, ATLAS Code 00 Flex-Track. ATLAS Code 83 may be used, however if the builder uses Code 83, he must provide a transition joiner track. Hub_Module_Specs Rev.doc

3 HUB MS- 2 OF /0/09 Optional Local Track: Centerline of local track is measured 9" from front face of front frame member, not from fascia board. Preferred track, ATLAS Code 00 Flex-Track. ATLAS Code 83 may be used, however if the builder uses Code 83, he must provide a transition joiner track. Additional Track: Any track in addition to the mainlines and local track may be of the builders choosing. Track ends: Both main lines and local track must end /2" from each end of the module. Connecting track: Each module is connected by a standard 9" piece of commercial straight track, Code 00 Atlas Snap Track. If your module contains Code 83 track on the mainlines or local track, you must provide must provide a transition track. Sidings: Must be no less than 2" from either main track or local track. Grade: Mainline grade is 0% Mainline Radius: Turnouts: Diamonds: Crossovers: Roadbed: Ballast: Corner modules as specified in Corner Module Section. Return Loop radius - 22" Main line must be at least Code 00 PECO Medium Insulfrog (approximately a #). Hand laid turnouts in the mainline are discouraged. Commercial Code 00 diamonds are recommended in mainline track. Must be insulated at the crossover to electrically isolate the Outside Main from the Inside Main, and the Inside Main from the Local Track Roadbed can be any suitable material that is 3/" thick. Main line ballast must be Woodland Scenics gray medium (B-82). Backboard Paint: Sherwin-Williams SW787 Baby Blues or The Home Depot Behr Interior Flat Wall 050 UP White Quart Pigment Oz 8ths. 9ths. Lamp Black 0 D Thalo Green E Thalo Blue Highway Crossings: Uncouplers: Roadway material must be at least /32" below top of rail. None allowed in main line. Hub_Module_Specs Rev.doc

4 HUB MS- 3 OF /0/09 Scenery: Signals: Scenery shall be finished with no scenery material showing. Scenery shall end at least one inch from the edge of the module so as not to conflict with the adjacent modules. All block signal and grade crossing flasher systems shall be independently powered not using track power Block detection using current detection must use detectors that do not connect directly to track power. Use either current transformer detectors or opto-isolated detectors. When using current transformer detectors, the module or selected block must be isolated with an insulated track joiners. General Electrical Specifications Use of 20VAC Power: Track Power System Track Power Feed: Wire: Connectors:. Accessory AC: Accessory DCC: DCC Command bus: 20VAC power is NOT allowed on or in ANY module. All accessories MUST be powered from the Accessory AC power (white connector) The track power system shall be DCC using Lenz Digital Plus Connections to the Outside Mainline, Inside Mainline and optional Local Track must be independent. All interconnecting wire shall be AWG stranded minimum. This includes wire for the Outer Mainline, Inner Mainline, Local Track, Accessory DCC and Accessory AC. 8 AWG stranded is recommended for connection from power bus to track. All track connectors shall be Anderson Powerpole PP5 or PP30 The following are Anderson Powerpole part numbers: 5A Contacts ( - 20 AWG) A Contacts (2 - AWG) 33 Recommended Red Housing 327 Outside Main Green Housing 327G5 Return Loop Black Housing 327G All White Housing 327G AC Blue Housing 327G8 Local Track Yellow Housing 327G Inside Main Orange Housing 327G7 Accessory DCC Auxiliary connectors, not used for module power, may be any suitable connector of the builders choosing. Anderson Powerpole connectors are recommended. AC accessory power -8 VAC of suitable current, (5-0 A) shall be provided for powering accessories such as, switch machines, structure lighting, signal systems, etc. Use of 20VAC for powering accessories is NOT ALLOWED A separate DCC booster shall be used to supply power for DCC controlled accessories such as switch machines. The cab bus is based on commonly available components used for telecommunications and networking. Interconnects between modules use CAT5 (RJ5) patch cables chosen for dependability. Interconnect wire is pair CAT5E cable. The connector is wired in conformance with wiring termination T58A Hub_Module_Specs Rev.doc

5 HUB MS- OF /0/09. Cab Bus Panels: Throttle Connectors: Inter-module Connectors Inter-module Jumper Cables Cable connector pinouts: Lenz LA52, NCE UTP and NCE UTP-DIN are compatible with the DCC cab bus. Note: The Digitrax UP5 is NOT compatible with the Hub Division command bus. 5 Pin DIN Connectors are recommended for Lenz and NCE installations, however RJ-P connectors are compatible with the Lenz LA52 and the NCE UTP cab bus panels. Connectors for inter-module connection shall be CAT5 8P/8C, 8-position, 8-conductor (RJ5) connectors of any manufacture. The color shall be White. Jumper cables for inter-module connection shall be foot CAT5 cables of any manufacture. The color shall be White. RJ5-8P/8C connector - T58A Pin Color Signal Lenz Green/White Reserved 2 Green Reserved 3 Orange/White Ground Blue -RS85 5 Blue/White +RS85 Orange +2 Volts 7 Brown/White +RS85 return 8 Brown -RS85 return Hub_Module_Specs Rev.doc

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7 HUB MS- OF 3 5 2/20/09 PARTS LIST STRAIGHT MODULE Item Quan Description 2 3/" Plywood Connecting Ends 2 X X 8" Pine Front Ledger 3 X X 8" Pine Rear Ledger 2 X X 22 /2 " Pine Cross Brace 5 Gusset Leg Pocket Assemblies - See Leg Pocket Section 7 Leg Assemblies - See Leg Pocket Section 8 8 3/"X 8" /2" Plywood Backboard 9 Crowd Barrier (Plastic pipe and tee)- /2" PVC 0 ½ PVC Plastic pipe cap for crowd barrier 3/"X 8" X /8" Tempered Masonite Fascia 2 ft 3/" Velcro Self Adhesive Loops (Skirt Attachment) /2" X 3/8" C-Clamps as req #8X /" FH Wood Screws (roadbed, risers, backboard) 5 as req #8X /2" FH Wood Screws (frame) as req #X3/" FH Wood Screws (fascia) 7 #X3/" PH Sheet Metal Screws (Pipe Cap) 8 as req #X/2" PH Sheet Metal Screws (Cable Clamps, Velcro Cable Ties) 5 # X /2" Washer Head Screw (Velcro Skirt Attachment, Cable Ties) 20 as req 5/8" - 8 Wire Nails (Roadbed) 2 as req ATLAS Track Nails 22 as req Rail Joiners 23 2 Velcro Cable Ties 2 8 ft Homa-Bed, Cork, or Milled Wood Roadbed 25 ft ATLAS Code 00 Nickel-Silver Flex Track 2 ½ in ATLAS Code 00 Snap Track in ATLAS Code 00 Snap Track (Joiner Track) Straight_Module_PL_rev5.doc

8 HUB MS- 2 OF 3 5 2/20/09 PARTS LIST STRAIGHT MODULE Item Quan Description Additional Parts - Open Top Module /2" Plywood Sub-Roadbed 5" X 8" (Open Top Module) 2 2 X X " Risers (Not used with Full-Top module) 3 5/32" X 3/" X 8" Filler Strip (Cut into pcs see drawing) as req " - 8 Brads (Filler Strip) Additional Parts - Open Top Module with Local Track 5 /2" Plywood Sub-Roadbed 7" X 8" (Open Top Module with optional local track) 2 ft Homa-Bed, Cork, or Milled Wood Roadbed 28 3 ft ATLAS Code 00 Nickel-Silver Flex Track 29 2 ½ in ATLAS Code 00 Snap Track 30 9 in ATLAS Code 00 Snap Track (Joiner Track) Additional Parts - Full Top Module /2" Plywood Sub-Roadbed 2" X 8" (Full Top Module) 2 2 ½ X 22 in Pine Roadbed Supports 3 /2 X in Pine Risers The following items are for the wiring harness. A pre-wired harness is available from Hub Division. Contact Hub Division for price and delivery information 7 0 Anderson Powerpole Housing - Black P/N 327G 72 2 Anderson Powerpole Housing - Red P/N Anderson Powerpole Housing - Yellow P/N 327G 7 2 Anderson Powerpole Housing - Blue P/N 327G Anderson Powerpole Housing - Orange P/N 327G7 7 2 Anderson Powerpole Housing - White P/N 327G Anderson Powerpole Contacts 30A for 2- AWG Wire P/N ft 2 Conductor AWG Stranded Cable 79 5 ft #8 Stranded Hookup Wire Straight_Module_PL_rev5.doc

9 HUB MS- 3 OF 3 5 2/20/09 PARTS LIST STRAIGHT MODULE Item Quan Description 80 Terminal Block - 2 Positions - Molex or equal 8 3/8" Cable Clamps 82 as req #8 Solid Hookup Wire - Track Feed 83 # X 3/ Pan Head Sheet Metal Screws (terminal block) The following items are for the DCC cab bus. A pre-wired cab bus is available from Hub Division. Contact Hub Division for price and delivery information 9 2 Keystone Connectors U type white (Jack2Rack SKU 30-J257/WH) 92 2 Keystone Connectors U type blue (Jack2Rack SKU 30-J2509/BL) 93 2 Surface mount boxes 2 port (Jack2Rack SKU 039-3WH/D) 9 Lenz LA52 Express Net Adapter 95 ft CAT5e pair network cable 9 2 Modular plug RJ P/C Straight_Module_PL_rev5.doc

10 HUB MS- OF 23 2/20/2009 OPEN TOP STRAIGHT MODULE VELCRO STRIP 7

11 HUB MS- 2 OF 23 2/20/2009 FULL TOP STRAIGHT MODULE VELCRO STRIP 7

12 HUB MS- 3 OF 23 2/20/2009 OPEN TOP STRAIGHT MODULE WITH OPTIONAL THIRD TRACK VELCRO STRIP 7

13 HUB MS- OF 23 2/20/2009 FULL TOP STRAIGHT MODULE WITH OPTIONAL THIRD TRACK VELCRO STRIP 7

14 HUB MS- 5 OF 23 2/20/2009 TWO TRACK STRAIGHT MODULE 8 5 3/ 5 3/ 8 PLACES 2 *7 *5 5 3 /2 Track and Roadbed Center DImensions from front of module WITHOUT Fascia FILLER STRIP /2" X 3/" X 5 /2" 2 - REQUIRED / FILLER STRIP /2" X 3/" X 3 /2" 2 - REQUIRED 3 3/ Dimensions shown with (*) are required 2 2 PLACES * Track End - /2 " From end of module

15 HUB MS- OF 23 2/20/2009 THREE TRACK STRAIGHT MODULE 8 5 3/ 5 3/ 5 8 PLACES 2 *9 *7 *5 7 3 /2 Track and Roadbed Center DImensions from front of module WITHOUT Fascia FILLER STRIP /2" X 3/" X 3 /2" 2 - REQUIRED / FILLER STRIP /2" X 3/" X 3 /2" 2 - REQUIRED 3 3/ OPTIONAL THIRD TRACK Dimensions shown with (*) are required PLACES * Track End - /2 " From end of module

16 HUB MS- 7 OF 23 2/20/ Ø5/ 2 3/ 3 /2 ITEM 2 - FRONT LEDGER REQUIRED MATERIAL - PINE X 3/ 8 3 /2 ITEM 3 - REAR LEDGER REQUIRED MATERIAL - PINE X 22 /2 3 /2 90 ITEM - CROSS BRACE 2 REQUIRED MATERIAL - PINE X 2 ITEM 5 - GUSSET () REQUIRED MATERIAL - PLYWOOD 3/" 2 8 / 3 /2 2 ITEM - MODULE END 2 REQUIRED MATERIAL - PLYWOOD, 3/" 3 3/

17 HUB MS- 8 OF 23 2/20/ / Ø5/ 3/ 2 ITEM - FASCIA REQUIRED MATERIAL - /8" TEMPERED MASONITE 8 3/ 8 ITEM 8 - BACKBOARD REQUIRED MATERIAL - /2" PLYWOOD 3 /2" PVC TEE ITEM 9 - CROWD BARRIER REQUIRED /2" PVC PIPE

18 HUB MS- 9 OF 23 2/20/ /2 3/ 7 8 ITEM 5 - SUB ROADBED (THREE TRACK) REQUIRED MATERIAL - /2" PLYWOOD ITEM 2 - RISER 2 REQUIRED MATERIAL - PINE X 5 8 ITEM - SUB ROADBED (TWO TRACK) REQUIRED MATERIAL - /2" PLYWOOD OPEN TOP ITEM - SUB ROADBED REQUIRED MATERIAL- /2 PLYWOOD 3/ 3/ /2 /2 FULL TOP

19 HUB MS- 0 OF 23 2/20/2009 SUGGESTED METHOD OF ASSEMBLY 2. Attach Item [2] and Item [3] to Item [] using 2 #8 X /2" screws, Item [5] (Two assemblies) Join the 2 assemblies from step. as shown using #8 X /2" screws, Item [5] PLACES 5 2 PLACES 5 2 PLACES 3. Attach the cross braces, Item [] using 8 #8 X /2" screws, Item [5]. See plan view on page 3 or for correct placement. 5 2 PLACES

20 SUGGESTED METHOD OF ASSEMBLY HUB MS- OF 23 2/20/2009 A 8 5 3/ 5 3/ B 2 Note: Before installing Gussets Item 5, the dimensions A-A and B-B must be equal, approx. 53 / in. B A Attach Gussets, Item [5] using #8X-/2 screws, item [5]. Make sure that dimensions A-A and B-B are equal, and module frame is flat. 5 B After securing gussets attach leg pocket assemblies, Item [7] using #8X-/2 screws, item [5]. Refer to sheet 9 for leg pocket assembly detail. PLACES 5 A A 5 B 5 Note: For final assembly instructions: 2 Track Module proceed to Page 2 3 Track Module proceed to Page Full Top module proceed to Page

21 SUGGESTED METHOD OF ASSEMBLY MODULE WITH LOCAL TRACK HUB MS- 2 OF 23 2/20/2009 Note: Before fastening risers, attach sub-roadbed, Item, to module ends using #8 X /" screws, item. Make sure that the sub-roadbed is flat. Clamp risers, item 2 to crossmembers then secure risers to cross-members with #8 X /" screws, Item FASTEN RISERS WITH / X 8 WOOD SCREWS ITEM 2 SCREWS PER RISER 8 PLACES

22 HUB MS- 3 OF 23 2/20/2009 SUGGESTED METHOD OF ASSEMBLY MODULE WITH LOCAL TRACK Notes: 3. Secure item 3, (filler strips) with item, (" wire nails) 2: Secure item 2 (roadbed) to sub-roadbed with item 20, (5/8"-8 wire nails) PLACES 2 SELF ADHESIVE VELCRO STRIP

23 HUB MS- OF 23 2/20/2009 SUGGESTED METHOD OF ASSEMBLY 2 TRACK MODULE Note: Before fastening risers, attach sub-roadbed, Item, to module ends using #8 X /" screws, item. Make sure that the sub-roadbed is flat. Clamp risers, item 5 to crossmembers then secure risers to cross-members with #8 X /" screws, Item FASTEN RISERS WITH / X 8 WOOD SCREWS ITEM 2 SCREWS PER RISER 8 PLACES

24 HUB MS- 5 OF 23 2/20/2009 SUGGESTED METHOD OF ASSEMBLY 2 TRACK MODULE Notes: 3. Secure item 3, (filler strips) with item, (" wire nails) 2: Secure item 2 (roadbed) to sub-roadbed with item 20, (5/8"-8 wire nails) PLACES 2 SELF ADHESIVE VELCRO STRIP

25 HUB MS- OF 23 2/20/2009 SUGGESTED METHOD OF ASSEMBLY 2 TRACK FULL TOP MODULE Note: Before fastening risers, attach sub-roadbed, Item, to module ends using 8 #8 X /" screws, item. Make sure that the sub-roadbed is flat. Clamp risers, items 2 and 3 to crossmembers then secure risers to cross-members with #8 X /" screws, Item. Secure sub-roadbed to risers with 8 #8 X /" screws, Item. 0 7 FASTEN RISERS WITH / X 8 WOOD SCREWS ITEM 2 SCREWS PER RISER 3 3/ 3 3/ /8 2 /8 3 PLACES RISER ASSEMBLY 2 REQUIRED

26 SUGGESTED METHOD OF ASSEMBLY 2 TRACK FULL TOP MODULE HUB MS- 7 OF 23 2/20/ Notes: : Secure item 2 (roadbed) to sub-roadbed with item 20, (5/8"-8 wire nails) PLACES 2 SELF ADHESIVE VELCRO STRIP

27 SUGGESTED METHOD OF ASSEMBLY FULL TOP MODULE WITH LOCAL TRACK HUB MS- 8 OF 23 2/20/ Notes: : Secure items 2 and 52 (roadbed) to sub-roadbed with item 20, (5/8"-8 wire nails) PLACES 2 SELF ADHESIVE VELCRO STRIP

28 BASIC WIRING DIAGRAM INCLUDING ACCESSORY DCC HUB MS- OF 23 2/20/2009 COLOR CONNECTOR ASSY FRONT VIEW RED 72 OUTSIDE RED OUTSIDE 7 7 YELLOW YELLOW INSIDE INSIDE 7 7 BLUE BLUE LOCAL TRACK LOCAL TRACK ACCESSORY DCC ORANGE 75 7 AC WHITE ORANGE ACCESSORY DCC 7 7 WHITE AC 7 80 WHITE CONNECTOR ASSY FRONT VIEW WHITE OUTSIDE INSIDE LOCAL TRACK { ACC. DECODERS AC{ CONNECTOR ASSY FRONT VIEW LOCAL BLUE INSIDE MAIN YELLOW OUTSIDE MAIN RED FRONT OF MODULE - VIEWING SIDE

29 { { { { { L M A B MODULAR LAYOUT SYSTEM HUB MS- 20 OF 23 2/20/2009 View 'A' RED 8 WHITE ORANGE BLUE YELLOW 8 83 OUTSIDE INSIDE LOCAL ACCESSORY AC 83 7 / / 3 8 WHITE ORANGE BLUE YELLOW RED View 'A' L M A B 83 OUTSIDE { INSIDE LOCAL ACCESSORY AC 83 { { { { / 7 / DCC WHITE WHITE RIGHT ORANGE ORANGE Suggested placement of Velcro Cable Tie LEFT Orange-White Connector Arrangement

30 RESERVED RESERVED GROUND "M" -RS85 "B" +RS85 "A" +2 VOLTS "L" +RS85 RETURN -RS85 RETURN MODULAR LAYOUT SYSTEM 2 OF 23 HUB MS- 2/20/2009 RJ5 8P/8C SOCKET WHITE, ITEM 9 DCC CONTROL BUS CABLE FOR LENZ OR NCE PROCAB RJ5 8P/8C SOCKET WHITE, ITEM 9 RESERVED GREEN/WHITE GREEN/WHITE RESERVED GROUND "M" 2 3 GREEN ORANGE/WHITE 95 BROWN, BROWN/WHITE PAIR GREEN ORANGE/WHITE -RS85 "B" BLUE BLUE +RS85 "A" 5 BLUE/WHITE BLUE/WHITE +2 VOLTS "L" +RS85 RETURN 7 ORANGE BROWN/WHITE GREEN, GREEN/WHITE PAIR ORANGE BROWN/WHITE -RS85 RETURN 8 BROWN BLUE/WHITE +RS85 "A" ORANGE +2 VOLTS "L" ITEM 9 RJ P/C MODULAR PLUG TOP VIEW BLUE RS85, "B" ORANGE/WHITE GROUND, "M" BLUE/WHITE +RS85 "A" ORANGE +2 VOLTS "L" ITEM 9 RJ P/C MODULAR PLUG TOP VIEW BLUE RS85, "B" ORANGE/WHITE GROUND, "M" BROWN RJ P/C MODULAR PLUG FRONT VIEW RJ P/C MODULAR PLUG FRONT VIEW RJ5/CAT5 SOCKET FRONT VIEW TO LENZ LA52 OR NCE UTP OR UTP DIN TO LENZ LA52 OR NCE UTP OR UTP DIN 8 T58A wiring standard on the RJ5 socket BROWN BROWN/WHITE ORANGE BLUE/WHITE GREEN/WHITE GREEN ORANGE/WHITE BLUE USOC pin wiring standard on the RJ plug. This conforms to Lenz, and NCE wiring. Green - Green/White pair is shown as a pass through pair, does not pass through the bus panel

31 RESERVED RESERVED GROUND "M" -RS85 "B" +RS85 "A" +2 VOLTS "L" +RS85 RETURN -RS85 RETURN MODULAR LAYOUT SYSTEM 22 OF 23 HUB MS- 2/20/2009 CAT5 THROUGH CABLE RJ5 8P/8C SOCKET BLUE, ITEM 92 RJ5 8P/8C SOCKET BLUE, ITEM 92 GREEN/WHITE GREEN/WHITE 2 3 GREEN ORANGE/WHITE 95 GREEN ORANGE/WHITE BLUE BLUE 5 BLUE/WHITE BLUE/WHITE ORANGE ORANGE 7 BROWN/WHITE BROWN/WHITE 8 BROWN BROWN HARDWIRED DIN SOCKET FOR LENZ OR NCE RJ5 8P/8C SOCKET WHITE, ITEM 9 RJ5 8P/8C SOCKET WHITE, ITEM 9 RESERVED GREEN/WHITE GREEN/WHITE RESERVED GROUND "M" 2 3 GREEN ORANGE/WHITE 95 BROWN, BROWN/WHITE PAIR GREEN, GREEN/WHITE PAIR GREEN ORANGE/WHITE -RS85 "B" BLUE BLUE +RS85 "A" 5 BLUE/WHITE BLUE/WHITE +2 VOLTS "L" ORANGE ORANGE +RS85 RETURN 7 BROWN/WHITE BROWN/WHITE -RS85 RETURN 8 BROWN BLUE -RS85 "B" B A BLUE/WHITE +RS85, "A" BROWN ORANGE/WHITE GROUND, "M" M L ORANGE +2VOLTS, "L" DIN SOCKET REAR VIEW

32 HUB MS- 23 OF 23 2/20/2009 DCC CONNECTOR BOX MOUNTING ITEM 92 DCC CONNECTOR BOX ONE BOX EACH END BLUE WHITE ITEM 92 DCC CONNECTOR BOX ONE BOX EACH END WHITE BLUE NOTES: PLACEMENT OF CONTROL PANEL(S) IS AT THE BUILDERS DISCRETION. CABLES MUST BE OF SUFFICENT LENGTH TO REACH CONTROL PANELS WITH ADEQUATE SLACK.

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34 HUB MS- OF JUNE 27,2008 LEGS AND LEG POCKETS Ø/2 /2 /2 7 5 LEG ADJUSTER ASSEMBLY 9/ 2 5/ 35 Ø7/ Ø7/ 3 /2 3/ 3/ 3 /2 3/ LEG POCKET A ITEM 3/ LEG POCKET B ITEM 2 Ø3/32 TWO PLACES Step : Cut the two pieces shown above from 3/" Plywood Step 2: Install 5/ - 8 threaded insert in each piece as shown. 2 inserts total. (Item ) Step 3: Assemble the two pieces as shown using 2 - /" X 8 screws (Item 8) and glue.