Setting a wagon tire

[cavelamb]

How hot does it have to be?

The coefficient of thermal expansion for steel is 0.00000645in/in/deg F.

75 inches x 0.00000645 = 0.00048375 PER DEGREE INCREASE.

So, how much fit do you need?

[Stormin Mormon]

If you heat it up, and then slide it onto the wooden wheel. Won't that char the wheel some?

[Stormin Mormon]

Six guys with six torches? When I was more actively doing HVAC. The boss and I would chit chat while we used two torches and two rolls of solder to assemble 1 1/4 copper pipe for boiler heat systems.

[Lloyd E. Sponenburgh]

cavelamb fired this volley in news:B4SdnbFTn8xfWcnRnZ2dnUVZ [e-mail]:

Well, it ain't much, really. If you heated it up 500F, you'd get a 1/4" (roughly) circumferential expansion, which would be 1/4 over pi inches in diameter, or roughly a bit more than 1/16" diametral expansion.

That's enough, I'd say, to get it over a well-sized wheel. If not - if you wanted to pull the wheel together tighter than you built it - heat it up 1000F for an 1/8" increase.

On a wooden wheel, what you really need to do is make sure it will shrink down further than the amount it burns away the wood before it's below

450F. That's more dependent upon the skill of the wheelwright in mounting and chilling the tire than it is upon the actual temperature to which it's heated.

LLoyd

[Puckdropper]

"J. Clarke" wrote in news: [e-mail]:

You've got 27" to work with if you put it in diagonally. There's a third dimension to be concerned about, but it's faster to try it than to work on all the calculations.

It doesn't matter if your oven tops out before the wheel has expanded enough, though. (But you knew this.)

Puckdropper

[Lloyd E. Sponenburgh]

"Stormin Mormon" fired this volley in news:eI35o.33567$ [e-mail]:

It does, indeed. The "art" is in having it char away less wood than the amount it will shrink after cooling. There are ways.

LLoyd

[CW]

In the time it has taken to discuss this, I would have dug a shallow hole, filled it with charcoal and done it. This is a classic case of overcomplicating things.

[J. Clarke]

Not an option. If it was I would already have done it.

[Martin H. Eastburn]

I'm with you on the ring. Should be real if possible.

How about a ring of charcoal brickets like used for the Bar-B-Que fires. Maybe a small hill in the center of the main ring circle.

lay out the ring on the ground - make a row inside and outside - then crunch them together, run a line of fire starter if you don't use auto-start ones.

So no real fire, just some bricks - and you can hose them down after wards.

Mart> Working on a decorative wagon wheel in wood, but I'd really like to put a metal

[J. Clarke]

How do you figure? If I tilt it up front to back then I've only got the

21 width. If I tilt it side to side then I've only got the 17 depth.

[J. Clarke]

Looking at this further, I may need a bigger tank than I'd want to handle to get this whole thing to red heat with oxyacetylene. Mongo weed burner is looking like the right tool.

[RicodJour]

I don't understand something about this no-fire regulation. Where exactly is it that you can't have a BBQ? Seems outlandish.

R

[cavelamb]

Or maybe two of them. One on each side would sure make for a quicker job.

[krw]

A *lot* of places have no *open* fire regulations, at least part of the time. There are "Red Flag" warnings issued here on dry days (quite often in the Winter). Some areas require a "burn permit" for an open fire.

[CW]

That "burn permit" is the city wanting to make money under the guise of "environmentalism". It's about time some of these idiots started "disappearing".

[J. Clarke]

You can have a barbecue here but it has to be in either the portable kind on wheels or if you're going to use a pile of bricks then you need to pull a permit and get the inspector to approve it, and he's not gonna unless the bricks are mortared together.

[dpb]

CW wrote: ...

Not at all in areas that have or are susceptible to red flag warnings -- it's common-sense protection to minimize chances for wildfires that easily can get out of hand.

The "permit" is no-cost; the requirement means there's some control over where/what/when and an awareness of who/where/when so have handle on responders and sufficient to handle just in case.

The difference to the miscreant is if have gotten the permit and something happens as long as you abided by conditions and it was an inadvertent incident such as a sudden gust of wind you're off the hook. If, otoh, you ignore and go ahead any way, you can be liable for responder costs and penalties.

--

[Jack Stein]

But then I wouldn't have known the history of the wheelwright, would not have watched LOX light a charcoal grill, would not have seen what happens when a bowl of Liquid Nitrogen is dumped in a swimming pool (spin off of the LOX) would not have known HF sells a propane weed burner for $12.

On the other hand, if it were me, I would have likely screwed up a wheel or two before asking, and another after asking before realizing there is more toit than meets the eye...

[krw]

NO, it's not. They want to regulate fire hazards. They won't issue permits in very dry weather, for instance.

[Steve W.]

You should talk to one of the local Amish smiths. In this area they are using a neat wheel. They look like the standard wood/steel construction. BUT they actually have a wood center/spokes/rim, Then they have a layer of rubber glued to that and a steel ring around all of it. The rubber gives a better ride and seems to lower the wear on the steel as well.