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#114528 - 04/09/03 01:14 PM Playing with Fire
Admin Offline

Registered: 10/07/00
Posts: 3190
Loc: NY, USA
Remember the photo of the torch? Well here's how we use fire to heat up a tire to about 400 degrees to expand it enough to fit on the wheel.

The tires are carefully machined for an interference fit on the wheel, and then heated and slid onto the wheel then allowed to cool, and the tire shrinks to fit.

Great place to work if you like playing with fire.


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#114529 - 04/09/03 04:16 PM Re: Playing with Fire
Bjarney Offline
Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
I'll bet TrainWire's "tires" are not exactly "Indy 500" steel-belted radials.

Tree stumps may not be the first choice in wheel chocks.

Wearing surgical gloves here to keep your hands sanitary is probably a bad idea.

  :-) :-) :-)
#114530 - 04/09/03 06:13 PM Re: Playing with Fire
sparky66wv Offline
Registered: 11/17/00
Posts: 2342
Loc: West Virginia
I would expect the inside diameter to shrink during heating as the metal expands, aggravating the problem...

I would expect that cyrogenics would be a better idea causing the metal to shrink, but what do I know!!!

Heck, I assumed wheel and tire were one solid piece, replacing the whole works and smeld it down for another...

Neat stuff... I'm always learning here!

Oh, someone has to say it:

Is that a "HotWheel"?

[This message has been edited by sparky66wv (edited 04-09-2003).]
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#114531 - 04/09/03 07:34 PM Re: Playing with Fire
SvenNYC Offline
Registered: 08/19/02
Posts: 1685
Loc: New York City
I also always thought that train wheels were one solid slab of least that's what the subway car wheels here in New York are like.

Are the wheels and axle integral or can that also be taken apart?

Talk about heavy metal
#114532 - 04/09/03 09:54 PM Re: Playing with Fire
frenchelectrican Offline
Registered: 02/06/03
Posts: 938
Loc: Wi/ Paris France { France for ...
sven nyc:
i used to work on railroad before and for wheels and axle on trains are one piece look like over size auto axle but they are pretty hevey piece of metel but all the locomotvie wheel are little diffrent set up they will have large steel disc then the "ring " go on to make the final machine work it is common pratice with the steam locomotive by heating large ring then drop on the wheel to cool off then machine it to proper shape and make it true circle myself i know pretty well about locos i rebuilt few of them engines ; traction motours ; electral area and few other items as need

p.s. scott 35 also a rail fan here he know quite a bit of loco's

merci marc
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

#114533 - 04/10/03 07:03 AM Re: Playing with Fire
txsparky Offline
Registered: 05/25/01
Posts: 578
Loc: Magnolia,.Texas U.S.A.
If you keep this up, you're are going to have to change your screen-name to TRAINFIRE !!

[This message has been edited by txsparky (edited 04-10-2003).]
#114534 - 04/10/03 09:43 AM Re: Playing with Fire
Bjarney Offline
Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
TrainWire — The local gas company or acetylene supplier must love you guys!
#114535 - 04/10/03 06:37 PM Re: Playing with Fire
ZackDitner Offline
Registered: 10/11/02
Posts: 46
Loc: Kitchener, Ontario, Canada
I love the rubber flex gas line attached to that Tee laying under that 400 degree ball of fire, i guess OSHA doesn't poke their noses in your business too much? lol

looks pretty damn cool
#114536 - 04/10/03 06:38 PM Re: Playing with Fire
ZackDitner Offline
Registered: 10/11/02
Posts: 46
Loc: Kitchener, Ontario, Canada
Sorry i'm a freaking moron, thats not a gas line at all. (shoves foot in mouth, down throat and god knows where and keep shoving it, oh wait now i'm diggin a hole)
#114537 - 04/11/03 08:02 AM Re: Playing with Fire
Trainwire Offline
Registered: 03/15/02
Posts: 364
Loc: Strasburg,PA,USA
Sven: Our Loco's wheels and axles are two seperate pieces. We have a 600 ton press to take them apart and put them together. The axles are steel, while the wheels are cast iron. We had to have one made when we restored our N&W #475. The pattern for the casting cost 2 1/2 times the casting itself.

The local welding supply house shows up once a week with a fresh batch of cylinders. The process in the picture uses propane, the hoses in the picture are not as close as they look. One is a gas hose, much the same as the fire resistant one on a torch set, and the other is an air hose. You turn the gas on all the way, then wind the air in till you get a nice flame. The torches in the previous (now famous) picure, uses oxygen, this getup just uses shop air, as we are not looking for as hot a flame. These are relativly small wheels for a climax logging engine that we are doing for someone else. Some tires can be 80 inches across.


We do our best to comply with all OSHA regs, and have an excellent saftey record. Wejust do a lot of stuff that's big heavy and hot.


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