Author Topic: Anyone explain/illustrate how these gon doors work?  (Read 1357 times)

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sirenwerks

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Anyone explain/illustrate how these gon doors work?
« on: January 27, 2020, 01:39:52 AM »
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Spied this SR/COG boxcar-rebuild woodchip car slide on eBay and the design has piqued my curiosity. But I'm stymied how the doors work. I see they're chain controlled using chain/pulley but I don't see how they're opened and closed by the operator.





The added bean at the bottom is rally a curiosity too. I'm not a Southern fan b am looking for interesting rebuilds to fill out my Pacific NW line's fleet. If anyone knows more about this series of cars, please tell me more.




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Point353

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Re: Anyone explain/illustrate how these gon doors work?
« Reply #1 on: January 27, 2020, 05:23:42 AM »
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To empty, open the bottom doors and shake:



The added side beams on these modified boxcars replaced the structural components lost by removing the roof and cutting away parts of the underframe to install the doors.

sirenwerks

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Re: Anyone explain/illustrate how these gon doors work?
« Reply #2 on: January 27, 2020, 06:02:57 PM »
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To empty, open the bottom doors and shake:



The added side beams on these modified boxcars replaced the structural components lost by removing the roof and cutting away parts of the underframe to install the doors.


Thanks for that knowledge on the underside beams, that makes great sense. In looking at the photo I posted again, I am wondering if, given how far those new side beams come out past the center of the trucks, if these cars would be modelable.


As for the door opening, well you explained when the doors should be opened (when you want the load out, duh) but not how those "wheels", or whatever they are, on the side of the car work. By the positioning of the carman in your pic, it looks like a handle/lever is being inserted to turn it, like a wheel, or release it, as a ratchet. That's what I am trying to figure out, what is the mechanism that opens the doors. It's just, to me, those round things on the side of the car don't present as big enough to be wheels that can be turned without assistance (like a brakewheel) to slack a chain that frees a door open; they look like a pulley to me.


OOC, did the Southern ever recreate this design in a 50-foot car?
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Chris333

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Re: Anyone explain/illustrate how these gon doors work?
« Reply #3 on: January 27, 2020, 06:16:14 PM »
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It could be that the outside of the "wheels" are geared and engage with the ratchet. The center of the wheel could be a square post that a wench could plug into in order to un-ratchet the wheel.

NtheBasement

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Re: Anyone explain/illustrate how these gon doors work?
« Reply #4 on: January 28, 2020, 07:16:31 PM »
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Just a guess - the doors slide similar to this:
https://www.progressiverailroading.com/railproducts/product/TC-Series-Gravity-Discharge-Gates--3530
The doors open by rack and pinion, and the hand wheels provide the leverage needed to turn the pinions. 
Moving coal the old way: https://youtu.be/RWJVt4r_pgc
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