Building the 2.5" Scale Shay
Moderator: Harold_V
Re: Building the 2.5" Scale Shay
Sounds good. What mods did you have to make to accommodate the bump up to 3/4 in flues?
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
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Re: Building the 2.5" Scale Shay
I lost two flues. I could only fit 16 3/4 flues where there were 18 5/8. Oddly enough that gave me slightly more surface area with the flues, but not enough to make a difference.jlakes85 wrote:Sounds good. What mods did you have to make to accommodate the bump up to 3/4 in flues?
Another change I made based on material availablity is I went with all 3/8" A516-70 plate instead of the 5/16" and 1/2" A515-70 that was called for in the plans.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Well the fire sheets are done! The girder stays are tacked in place and will be finished next. Then its on to the mudring and grinding the firering. Welding that elliptical ring in place should be interesting...
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
Looking good. How hot did you run the cover pass?
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
As hot as I could, 180 amps. Slow goings cause my machine only has a 20% duty cycle at 180.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Well, I got the girder stays welded on today and the mudring tacked in place and a seal weld placed on the water side.
Discovered a bit of a problem though. I misread the prints and had the fire ring made to the wrong dimensions, so its too large and sits between the sheets when it was supposed to pass all the way through both sheets. Since the firedoor is elliptical, this poses a bit of a problem. Its too expensive to have the waterjet place cut a new ring, so how do I go about making one myself?
Discovered a bit of a problem though. I misread the prints and had the fire ring made to the wrong dimensions, so its too large and sits between the sheets when it was supposed to pass all the way through both sheets. Since the firedoor is elliptical, this poses a bit of a problem. Its too expensive to have the waterjet place cut a new ring, so how do I go about making one myself?
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
Depending on its nature, you may be able to reduce the OD with a rotab. Posting a picture, with a better description of what needs to be done would really help, as not all of us are familiar with what you're talking about (I am not).Soot n' Cinders wrote: Since the firedoor is elliptical, this poses a bit of a problem. Its too expensive to have the waterjet place cut a new ring, so how do I go about making one myself?
Harold
Wise people talk because they have something to say. Fools talk because they have to say something.
Re: Building the 2.5" Scale Shay
Actually I made my fire door ring from a piece of 4" pipe. Just smack it with a sledge hammer until it gets to the shape you want. It's been a while so check the dims.
John B.
John B.
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Thanks John! I guess I was making it harder than it needed to be. Sounds like if it don't fit, get a bigger hammer.FLSTEAM wrote:Actually I made my fire door ring from a piece of 4" pipe. Just smack it with a sledge hammer until it gets to the shape you want. It's been a while so check the dims.
John B.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
I guess you could do the same thing in a shop press. BTW it could have been a 3" pipe but I think it was 4"
JB
JB
Re: Building the 2.5" Scale Shay
I just checked and it looks like it was 3.5" pipe.
JB
JB
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
I'll try the press first, I think the neighbors will appreciate that. Especially after all the grinding that's been going on around here.FLSTEAM wrote:I guess you could do the same thing in a shop press. BTW it could have been a 3" pipe but I think it was 4"
JB
I'll do a little research on squashing pipe into an oval and see what I can come up with for a size.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works