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November 2001 - Page 36


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Figure 4
platform requires three panels. Start by measuring and trimming the D-panel to match the outline of the center crossover piece. Secure in place, again with the side lips up. Then measure and trim each of the E-panels and secure in place (see Photo 6). Repeat this same procedure for the second side and crossover platform. I used spare Plano risers for the center support angles on the crossover platforms, bent and trimmed to fit.

Top View

Hopper Body

Triple Valve GA-191 GA-180

Coupler Assembly End
- Drill hole locations on this side

GA-180 End Detail and Assembly
The location of the body-mounted brake detail are different between the two classes. The GA-180 class has the brake air tank mounted on the right side. Starting with the brake air tank, remove the plastic air lines and drill two #78 holes where the old plastic brake lines are attached to the tank. On the tank ends, one end has two vertical pieces representing the tank bolt hold-downs while the prototype tank has only one hold-down per end. Remove these two vertical pieces and reinstall one in the center of the tank e nd. Make two triangular styrene brackets from .030 x .125 styrene strips using a Northwest Short Line Choppers 60 angle. Then remove just a little bit of the angle tip with a razor blade before securing to the tank. When dry, secure on the right side. As can be seen in the prototype pic tures, the triple valve and the brake cylinder are mounted on brackets. Make a channel bracket to support the triple valve from .100 styrene channel approximately 6" long and mount on top of the coupler assembly. Make two triangular shaped brackets to support the brake cylinder with .030 x .125 styrene strip, cut at a 45 angle with a 3" straight section on one end. Trim off the brake rod on the Atlas brake cylinder and drill a #72 hole in the back and front of the brake cylinder. Attach the triangular shaped brackets and mount the assembly on the left side, centered between the two vertical uprights for the brake mechanism on the end ladder assembly. After trimming the mounting pin from the InterMountain triple valve, determine the orientation of the triple valve per Figure 5. Drill four #78 holes on the right side, two rows of two. Mount the triple valve, with the four holes facing to the right, on the styrene c hannel. Using .015 brass wire, run one

Figure 5 Triple Valve Orientations

7
GA-180 brake-end detail.

8
GA-180 brake-end detail. Note the angled brake beam. piece from the back of the brake cylinder to the lower left hole on the triple valve, two pieces from the air tank to the top two holes of the triple valve, and run one piece from

the lower right hole on the triple valve to the train air line. The Atlas brake beams are too short, but can be used as a guide. Make a new vertical brake beam from .020 x .060 x 7' 6" long strip styrene. Drill two #78 holes, 3" and 48" from the bottom, to attach the brake linkage and brake cylinder. Using .015 brass wire, form a small loop through the second hole on the vertical brake beam and feed itthrough the hole on the front of the brake cylinder. Secure the vertical brake beam in place by connecting the brake cylinder wire and attach the brake linkage line through the bottom hole, trimming the brass wire as necessary. Make a new horizontal brake beam from 1/16" angle x 4' 9" long. The brake beam is mounted high on the prototype and is angled u pward from the body to the end ladder assembly, with the top of the angle almost level with the long grabiron. Attach this horizontal brake beam to the body and the vertical brake beam, making sure it will match the end ladder assembly (see Photos 7 & 8). The Plano roofwalk packages from set #78 also include the see-through coupler e nd platforms for the end ladder assem blies. However, the GA-180 class does not have the cutout for the brake chain to pass through the brake ends coupler platform, so use the two coupler end platforms without the cutout. Using green putty, fill the holes for the kits coupler end platforms. Drill two new #76 holes for the Plano platforms and install the Plano coupler end platforms. I substituted .015 brass wire for the kits bottom ladder rungs. Before installing the brake mechanism, trim away the molded plastic chain. Do not install the brake wheel at this time. Secure the long grabiron and then drill a #78 hole in each coupler lift bar bracket. The ladder braces have a row of small rivets on the angle part that faces outward. The GA-180 class cars were built without these rivets, so remove the small row of rivets by sanding smooth. Starting with the brake end, attach one left and one right ladder brace by placing the rectangular end of the brace in each locator hole on the end of the body. Make sure the long angle section of the brace is installed on the inside with the angle facing down. Trial fit the brake wheel end ladder assembly, trimming the ladder braces and brake beam for a flush fit. Install the end ladder assembly and secure in place. Two angles are mounted from the body to the end ladder assembly on both sides of the vertical brake beam. Split a 5' 3" long piece of .100 styrene channel in half, creating two angles. Attach with both angles facing away from the vertical brake beam. Then, make a small pad using .010 x .060 styrene cut 9" long. Place on top of these two angles, just behind the vertical brake beam toward the body. I installed a small piece of chain from the brake mechanism to the vertical brake beam. Make a small U-shaped hook from .015 brass wire and place through the last

36 MODEL RAILROADING

NOVEMBER 2001

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