Freight Track identification

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johnpenn74
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Freight Track identification

Postby johnpenn74 » Sun Nov 12, 2017 4:59 pm

Does anyone recognize this freight truck bolster? The aluminum broke. I would like to find a replacement.

JP
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John Pennington

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Pat Fahey
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Re: Freight Track identification

Postby Pat Fahey » Sun Nov 12, 2017 6:38 pm

Hi John
Going by the side frame it looks like one of Bill vanBrocklin design trucks because you did not state what scale. Just a guess, hope it helps. Pat WLS

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makinsmoke
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Re: Freight Track identification

Postby makinsmoke » Wed Nov 15, 2017 9:58 am

Railroad Supply?

BClemens
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Re: Freight Track identification

Postby BClemens » Wed Nov 15, 2017 12:01 pm

makinsmoke wrote:Railroad Supply?


Agree - the set w/o brake hangers. Looks like a case for CI bolsters.

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slsf1060
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Re: Freight Track identification

Postby slsf1060 » Wed Nov 15, 2017 2:37 pm

BClemens wrote:
makinsmoke wrote:Railroad Supply?


Agree - the set w/o brake hangers. Looks like a case for CI bolsters.



I was thinking the same thing, but didn't remember RRS having those cast on rocker points on top of the bolster like these have.
Darren McNeely

and the sons of Pullman Porters, and the sons of engineers,
ride their father's magic carpets made of steel.

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makinsmoke
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Re: Freight Track identification

Postby makinsmoke » Wed Nov 15, 2017 4:54 pm

The round thing above the springs?

That looks like something drilled and installed
there.

I've seen plenty of these broken. Usually the outside flange of the spring tab. I've never seen one broken just outside the wear block.

That's weird.

Pontiacguy1
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Re: Freight Track identification

Postby Pontiacguy1 » Thu Nov 16, 2017 9:13 am

Best thing to do, in my opinion, if you want to get the trucks fixed and back up and running, get yourself a piece of aluminum and just make another bolster on the milling machine. It might not look like the casting, but it will be much stronger and with most of it sitting there between the side frames anyway, it wouldn't be very noticeable. That's what I would do if it were my set of trucks.

BClemens
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Re: Freight Track identification

Postby BClemens » Thu Nov 16, 2017 10:33 am

7075

steamingdon
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Re: Freight Track identification

Postby steamingdon » Thu Nov 16, 2017 1:09 pm

trucks or tracks ? :D
steamer

BClemens
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Re: Freight Track identification

Postby BClemens » Thu Nov 16, 2017 5:52 pm

steamingdon wrote:trucks or tracks ? :D


Is 7075 rail available? Who would need steel rail?

Truck sideframes and bolters NC machined from solid 7075 stock would be stronger than ductile iron and easier to manufacture by CNC machining than casting....but in my personal estimation/opinion; aluminum is for airplanes - not railroad parts. I bought recently a bunch of arch bar truck parts (2 1/2" scale) and they seem like model train parts; not for any robust heavy use. Cast aluminum is mealy and soft - usually 356 AL. Compensate for its use by making necessary chunky and over scale looking parts that will probably still not be adequate in strength.

Why would anyone make siderods of cast aluminum? I bit - I bought some years ago thinking they must be adequate in strength - it turns out to be for ease of manufacture to sell - disregard damaging a piece of finished machanical equipment.

It's been a great day! Please don't forget that this is a discussion..IMO

BC
Last edited by BClemens on Thu Nov 16, 2017 6:13 pm, edited 1 time in total.

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makinsmoke
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Re: Freight Track identification

Postby makinsmoke » Thu Nov 16, 2017 5:59 pm

Re: my previous post about the location of the break.

That threaded? protrusion above the springs...

Could that have contributed to the bolster breaking where it did?

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makinsmoke
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Re: Freight Track identification

Postby makinsmoke » Thu Nov 16, 2017 6:03 pm

And keep in mind Guys this bolster is at least forty years old, and chances are it had a hard and unguarded life.

I understand that steel and possibly iron would be a better selection for base material today, but in a business sense I would say the Railroad got its money's worth from that purchase.


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