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Old 02-05-2017, 12:26 PM
Chefguy Chefguy is offline
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Join Date: Jun 2003
Location: Portlandia
Posts: 38,046
Why the giant wheels on old locomotives?

We were at the local train museum yesterday. They have some old locomotives that are enormous. The wheels on them are as tall as I am. Why were they so large? Was it a casting problem or because of an inferior alloy that would overheat a smaller wheel? Or some other reason that escapes me?

I was also impressed with the engineering skills it took to design those behemoths.
 

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