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Model Railroads

Page 28


Power Supply – The FTRR Air Wing

Okay, it's not really an airplane, but when the project boxes that I bought online arrived, the dimensions were much smaller than advertised. I really don't like sending things back, so, in order to get the Meanwell 24vdc power supply to fit, I chopped two boxes into one, added a fan, made some clearances and ending up with a "propeller plane."


Above – Mar 6, 2011 – The first box was cut up and the 12vdc fan mounting built.


Above – Mar 15, 2011 – The second box was tee'd into the first and the power supply checked for fit.


Above two pix – Mar 15, 2011 – The fan housing finished and lids altered. Outlet vents were added at the end opposite the fan.


Above – Mar 16, 2011 – The 120vac wiring added for the power supply. Note the plethora of little aluminum 1" vents.


Above – Mar 22, 2011 – The box was still too small and the plethora of little aluminum 1" vents weren't enough to provide adequate airflow past the power supply. Maybe these holes will help.


Above – Mar 26, 2011 – The air was channeled with added structure. By this point it finally occurred to me that building a box from scratch would have been easier (but not as much fun).


Above – Mar 28, 2011 – Finally…..


Above – Mar 29, 2011 – The wiring.


And here is the system for which it provides power, an early Aristocraft Train Engineer Radio Controlled Throttle System:

 


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