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| | |-+  GP525 Burlington GP9 Power A Cab # 2329
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Author Topic: GP525 Burlington GP9 Power A Cab # 2329  (Read 903 times)
montejd

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« on: November 10, 2016, 04:19:53 PM »

Hello.  I'm new to your board, and I have a question? 

We purchased a vintage Williams engine identified on the box as "GP525 Burlington GP9 Power A W/Horn CAB # 2329".  This engine was purchased for use in a children's museum where I do volunteer work.  It's essential that we lock the engine in forward.

I have modified a few Rev. 4 circuit boards to lock the engine in forward, but, even though one of the boards in this engine looks very much like a Rev. 4 board, the same mod doesn't do anything.   The board is identified as a 247 Category 1 reversing board, Patent # 5,321,344, and 335-X001R2.  This appears to be an engine from the early 1990's when locking into a direction may not have even been discussed.

Would anyone know if this engine can in fact be modified to lock it into forward?

Thanks for any help.

Joe
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JerryB

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« Reply #1 on: November 10, 2016, 04:55:36 PM »

Don't know the answer to your question, but I suggest you post this in the "Williams by Bachmann" forum:

http://www.bachmanntrains.com/home-usa/board/index.php/board,8.0.html

Lots more probability of a helpful answer there.

Happy RRing,

Jerry
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Len

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« Reply #2 on: November 10, 2016, 05:15:36 PM »

For display layouts, I find the simplest solution with old Williams locos is to remove the circuit board and replace it with a heavy duty full wave bridge rectifier. Something similar to: http://www.mcmelectronics.com/product/135-GBPC3504?scode=GS401&utm_medium=cse&utm_source=google&utm_campaign=google&scid=scplp6861893&sc_intid=135-GBPC3504&gclid=CMfYzN-Mn9ACFYlMDQodJLIDCQ

The pick-up and return connections are connected to the AC inputs, the DC +/- connections go to the motors. Using 'quick connects' on the wires that hood to the rectifier allows easy removal of the motors for periodic servicing.

Len
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If at first you don't succeed, throw it in the spare parts box.
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