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I recently bought a Lionel 497 coaling station and a Lionel C&O 6-26847 coal dumping car for my layout. The stations instructions don't say anything about what size coal to use and the dump car was supposed to have coal and a bin but arrived with only the car and logs. No mention in it's instructions as to what size coal to use. I have a bag of the small 6-12722 and a full box of the medium 6-16889. Which one is more suitable?

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Here is a chart showing the common sizes. You can do the math to convert to O. I use Black Beauty fine for "Chestnut", (the most common size), and the coarser grit for "Stove" coal.

Coal SizeMin Size in InchesMax Size in InchesSimilar Sized Objects
Barley3/32"3/16"Coarse Sand
Rice3/16"5/16"Pencil Eraser
Buckwheat(Buck)5/16"9/16"Dime
Pea9/16"13/16"Quarter
Chestnut(Nut)13/16"1-5/8"Golf Ball+
Stove1 5/8"2 7/16"Baseball
Egg2 7/16"3 1/4"Softball
Range*9/16"1-5/8"Quarter to Baseball
*Range coal is a mixture of pea and nut, consult your coal dealer for this option.
@rail posted:

Here is a chart showing the common sizes. You can do the math to convert to O. I use Black Beauty fine for "Chestnut", (the most common size), and the coarser grit for "Stove" coal.

Coal SizeMin Size in InchesMax Size in InchesSimilar Sized Objects
Barley3/32"3/16"Coarse Sand
Rice3/16"5/16"Pencil Eraser
Buckwheat(Buck)5/16"9/16"Dime
Pea9/16"13/16"Quarter
Chestnut(Nut)13/16"1-5/8"Golf Ball+
Stove1 5/8"2 7/16"Baseball
Egg2 7/16"3 1/4"Softball
Range*9/16"1-5/8"Quarter to Baseball
*Range coal is a mixture of pea and nut, consult your coal dealer for this option.

Nice chart. Thanks for posting.

Just tried out my  497 coaling loading station using the smaller, recommended , 6-12732 coal.  I used the  tallest coal car I own  to receive the coal from the station and a large part of it still  missed and went everywhere.   Has anyone tried the medium sized  coal 6-16889  or something else that might be a little more manageable ?

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