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Western Railroad Discussion > Is HALF a wheel better than NONE?Date: 10/27/06 11:55 Is HALF a wheel better than NONE? Author: schmo Here's what happens when a wheel on a coal car stops turning. Car was in service from/to the PRB. Unbelievably, no derailment!
--Schmo    Date: 10/27/06 12:31 Re: Is HALF a wheel better than NONE? Author: jcnienow So that's what they mean by a "condemnable flat spot!"
Date: 10/27/06 12:39 Re: Is HALF a wheel better than NONE? Author: schmo jcnienow Wrote:
------------------------------------------------------- > So that's what they mean by a "condemnable flat > spot!" Yeah, and maybe even flammable! Date: 10/27/06 12:46 Re: Is HALF a wheel better than NONE? Author: Doug schmo Wrote:
------------------------------------------------------- > Here's what happens when a wheel on a coal car > stops turning. Car was in service from/to the PRB. > Unbelievably, no derailment! > > --Schmo It looks like the far wheel is still round in the last photo. How could that be? Aren't the wheels solidly mounted to the axle, with both wheels and the axle turning in the bearings together? Date: 10/27/06 13:20 Re: Is HALF a wheel better than NONE? Author: bill_whh From the looks of it, It may have been in a minor derailment without a wheel change. Could have fractured the wheel.
my 2 cents Date: 10/27/06 14:14 Re: Is HALF a wheel better than NONE? Author: KB6GZ Yea, why isn't the other wheel flat?
Date: 10/27/06 14:27 Re: Is HALF a wheel better than NONE? Author: TriangleRoute The other wheel most assuredly also has a flat spot now, it just didn't fracture like the one in the foreground.
TRH Date: 10/27/06 16:34 Re: Is HALF a wheel better than NONE? Author: ats90mph on a brand new car too
Date: 10/27/06 17:19 Re: Is HALF a wheel better than NONE? Author: filmteknik Eh...you don't need the whole wheel; only the part touching the rail. :)
Date: 10/27/06 18:47 Re: Is HALF a wheel better than NONE? Author: TPWman yes that is actually a broken wheel.
Date: 10/27/06 19:23 Re: Is HALF a wheel better than NONE? Author: greendot Most likely caused by what is caused a shattered rim. The wheel rim develops small internal cracks which then spread outward. As the rim starts to break up, the crack opens across the wheel plate (the semi-flat area between the rim and the hub where the wheel is pressed onto the axle).
Date: 10/27/06 21:20 Re: Is HALF a wheel better than NONE? Author: 567Chant And the far side wheel is on the rail! I wonder what the direction of travel was.
...Lorenzo Date: 10/28/06 03:43 Re: Is HALF a wheel better than NONE? Author: DRGW schmo Wrote:
------------------------------------------------------- > Here's what happens when a wheel on a coal car > stops turning. Car was in service from/to the PRB. > Unbelievably, no derailment! > > --Schmo I wonder how well the rail fared? Looks like that wheel has damage all the way around from bouncing before it broke to the point where it probably was sliding for the last little bit... -Wes Date: 10/28/06 09:24 Re: Is HALF a wheel better than NONE? Author: CNW534 DRGW Wrote:
------------------------------------------------------- > > I wonder how well the rail fared? Looks like that > wheel has damage all the way around from bouncing > before it broke to the point where it probably was > sliding for the last little bit... > -Wes What kind of damage could have been sustained to these components? * Concrete ties * Joint bars * Rail clips * Frogs, switch points, and guide rails Does anyone know how far the car may have travelled in this condition? Mark Date: 10/28/06 16:39 Re: Is HALF a wheel better than NONE? Author: Doug 567Chant Wrote:
------------------------------------------------------- > And the far side wheel is on the rail! I wonder > what the direction of travel was. > ...Lorenzo Looking at how the bearing was partially pulled out of the frame, I'd say it was travelling left to right. |