Stainless Steel Arch for my RGS 20

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Marty_Knox
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Stainless Steel Arch for my RGS 20

Post by Marty_Knox »

Over the weekend I made an arch for my RGS 20. I used 3/8" x 2" 316L with 1/4" x 3/4" for the cross bar. I drilled 1/4" holes in both the uprights and cross bars. I pressed the 1/4" pins in the uprights, and reamed the holes slightly over size in the cross bar. I welded the pins to the uprights, then welded 1/4" x 3/4" 'feet' to the uprights. The feet fit into a step milled into the front of the grate to keep the arch from sliding back.
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Last edited by Marty_Knox on Mon Oct 13, 2014 7:07 pm, edited 1 time in total.
Marty_Knox
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Re: Stainless Steel Arch for my RGS 20

Post by Marty_Knox »

More pictures - first, the firebox without the arch.
Then the arch with the feet sitting on the grate.
Then the arch in place.
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FLSTEAM
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Re: Stainless Steel Arch for my RGS 20

Post by FLSTEAM »

Does anything keep it from moving back in the firebox?

John B.
Marty_Knox
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Re: Stainless Steel Arch for my RGS 20

Post by Marty_Knox »

Yes - the 1/4" x 3/4" 'feet' drop into the step milled across the front of the grate.
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jschoenly
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Re: Stainless Steel Arch for my RGS 20

Post by jschoenly »

Now that's an arch that won't go out the stack too quick! Very nice!
Jared Schoenly

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Model Engineering of all sorts.....
ccvstmr
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Re: Stainless Steel Arch for my RGS 20

Post by ccvstmr »

Marty...sorry, but I gotta ask. In the first firebox photo...it doesn't look like the bottom edge of the arch goes all the way to the front flue sheet. Did you put something else in there to close off air infiltration at the flue sheet? Would seem counterproductive to insure complete combustion only to allow fresh air in right in front of the flues. Carl B.
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Fred_V
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Re: Stainless Steel Arch for my RGS 20

Post by Fred_V »

I think that was just for clarity. The following pix show it all the way forward and dropped into the notch in the grates.
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Jbt68
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Re: Stainless Steel Arch for my RGS 20

Post by Jbt68 »

Just a newbie question... Was there a specific reason for using stainless for this application? I have been considering an arch for my LE 0-6-0...
Even in the dungheap a busy hen can bring forth a tasty corn - Johannes Kepler
Marty_Knox
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Re: Stainless Steel Arch for my RGS 20

Post by Marty_Knox »

Fred_V wrote:I think that was just for clarity. The following pix show it all the way forward and dropped into the notch in the grates.
What he said.
Marty_Knox
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Re: Stainless Steel Arch for my RGS 20

Post by Marty_Knox »

Jbt68 wrote:Just a newbie question... Was there a specific reason for using stainless for this application? I have been considering an arch for my LE 0-6-0...
Yes, the specific reason being the 316L - L meaning Low Carbon, should last longer in the conditions found in the firebox. Carbon steel would oxidize rapidly .
Jbt68
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Re: Stainless Steel Arch for my RGS 20

Post by Jbt68 »

That works for me Marty. Thanks!
Even in the dungheap a busy hen can bring forth a tasty corn - Johannes Kepler
Asteamhead
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Re: Stainless Steel Arch for my RGS 20

Post by Asteamhead »

Why not bending the support a bit upwards to improve stability at red hot temperatures? Just my 1 cent.

Asteamhead
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