[CBQ] Re: CB&Q 6100

["mdeckergwtcnet" <mdecker@gwtc.net>]

Hi Mitch.....

Cast iron car wheels have holes in them too, they are on the back side where 
you can't see them.  Most cast car wheels had a hollow "donut shaped" section 
around the hub.  The hollow helped to keep the cross section of the metal 
uniform.  The holes are mostly to allow the core that creates the "donut hole" 
to be broken up and removed after the casting has cooled.

Rolled steel wheels don't have the hollow section, the plate is curved instead. 
 I've posted a photo of the wheel that came apart on me at the east end of 
Osage, Wyo (MP-535+/-) and broke the South rail 54 times before a chunk of the 
wheel hit the air hose and busted the joint to put us in Emergency.  I did a 
good job on Mr. Buffett's railroad that morning, Bill :)  
http://groups.yahoo.com/group/CBQ/photos/recent/39194331/view

Mike

--- In CBQ@yahoogroups.com, "Mitch" <soocarman79@...> wrote:
>
> How come freight car wheels didn't have them?  They were cast iron at the 
> time also.
> Mitch
> 




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