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The control panel box was constructed of 3/4” plywood. The front is 1/8” woodgrain-decorated hardboard. A pair of hinges is used to mount the unit to the layout fascia, allowing it to be tipped up for wiring access. I created the front panel diagram with a CAD program, then printed it on cardstock. The result was covered with a piece of clear styrene, and mounted with four screws. The “direction” switch is a center-off DPDT telephone switch. The lever can be locked in either position, or just be held slightly off-center to easily jog the turntable to align the tracks. The “lights” switch is a simple SPDT toggle switch. The center three-position rotary switch will control track power to the turntable, the turntable and radial tracks 1 through 11, or the turntable and tracks 12 through 22. With this switch set to OFF, the desired radial track can be selected without sequentially energizing any of the other tracks. The six-stall roundhouse tracks will be connected to positions 1 through 6. The power supply is housed in an aluminum box. Its major components are a 16-volt AC doorbell transformer and 1 • O Scale Trains - Nov/Dec ’06 a kit-built DC power supply board. The DC output can be varied, and is set at 3.5 volts for the turntable motor. The 16 volt supply powers the DC board and is fed to the terminal strip for the turntable lighting power supply. A line power switch, a fuse & holder, power cord and strain relief are the other components of the unit. The power supply kit was purchased from the Hobbytron.com website. It has a 1.2 through 35 volt DC output, and is rated at 1.5 amperes. It includes a 2” x 2” printed circuit board and the components. The completed board was mounted in the box with four screws on short spacers. A heatsink was improvised using two brass strips and two thick brass washers. The original one-turn 47K potentiometer was replaced with a ten-turn 2K pot to achieve finer voltage adjustment. The installation of the turntable requires a 28” diameter hole cut through the layout base. This was accomplished with a router mounted on a radius arm. The four mounting bolt hole locations were transferred from the turntable. When the six stall Atlas roundhouse and the other tracks and wiring are installed, the turntable will be ready for use. We’ll send some photos of the completed engine terminal to OST. u Figure 1 rotating parts shown in red
HO FLEX TRACK INSULATED TRACK SECTION PINK GREEN TURNTABLE TRACK Figure 2 Figure 6 TURNTABLE TRACK WIRING Figure 3 CONNECTOR PINK GREEN DRIVE DISC INSULATED TRACK SECTION Nov/Dec ’06 - O Scale Trains • 1
Page 1: O Scale Trains Nov/Dec 2006 u Issue
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Page 6 and 7: Photo 4: While the residents of Gre
Page 8 and 9: led to the idea that it may be time
Page 10 and 11: ullet ullet River River Model Works
Page 12: Work trains - storm Cleanup To star
Page 15 and 16: the track power to the turntable. I
Page 17: support for the cabin platform was
Page 21 and 22: 1 Washer, Pit Center 1/8” x 1/8
Page 23 and 24: ack on track... In my last column t
Page 25 and 26: P&D Hobby Shop P&D Hobby F Unit Sal
Page 27 and 28: nMrA & o scale Convention I just fi
Page 29 and 30: Ron’s Books P.O. BOX 714, HARRISO
Page 31 and 32: Building a Small O Scale Layout Par
Page 33 and 34: Massive Power Output for Massive Lo
Page 35: standards- Part 2 Modeling in HO fo
Page 39 and 40: FOX HOLLOW MINING Co. set on flat s
Page 41 and 42: Narrow Minded Bobber Gibbs Congratu
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Page 45 and 46: pumps. I painted them red and green
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ATLASOSCALE - Locomotives! Reefers!
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