Author Topic: Adjustable Elbow  (Read 5406 times)

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Offline mstratton74Topic starter

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Adjustable Elbow
« on: Sep 13, 2005, 18:07:25 PM »
Is there a way to make one of the other elbow item work for an adjustable elbow? I can change the angle of the elbow I know but it also shortens the finished size... It sounds lie a real task figuring out the length on an adjustable elbow at a paticular angle... Can it be done?
Thank you, Marcus
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Offline bparrell

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Adjustable Elbow
« Reply #1 on: Sep 13, 2005, 18:31:07 PM »
There is a fitting in the libary i believe its cid 155.You can play with it,but as i remember from what Cj said it was a little troublesome.Maybe he can explain.I have not use it. I Just figured the set out as far as a offset.
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Offline Andy Robins

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Adjustable Elbow
« Reply #2 on: Sep 14, 2005, 09:10:36 AM »
If you are talking Round Ductwork, make a copy of CID 61, edit it and set the Option 14 "Leg Lengths" to Yes, now look at the dimensions tab, you enter centre line distances for the lengths. Easy.
Same for Pipework, CID 2523

Offline bparrell

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Adjustable Elbow
« Reply #3 on: Sep 14, 2005, 14:16:58 PM »
Andy,i'll try this,but not sure if the outcome is what he's suggesting(or my take on it) as far as the gores being able to rotate against one another.
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Offline mstratton74Topic starter

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Adjustable Elbow
« Reply #4 on: Sep 15, 2005, 19:59:05 PM »
Bob is on the right track. All of the gores should stay the same size and they would rotate to create any angel between 0 and 90 (for an adjustable 90 Elbow) Its not real imparative.. I can just fudge the lengths it with my straight pipe... Seems we run into a lot of problems with pre-cutting our spiral pipe anyway...

Thanks Guys...
Thank you, Marcus
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Offline Andy Robins

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Adjustable Elbow
« Reply #5 on: Sep 15, 2005, 21:45:13 PM »
I guess I misunderstand what an adjustable elbow is then, could you please paint a picture?

Offline mstratton74Topic starter

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Adjustable Elbow
« Reply #6 on: Sep 15, 2005, 22:59:59 PM »
Here is a Adjustable 90 degree SR elbow. the picture is the same elbow just adjusted to Straight, 45, and 90 degrees. I don't see a way to figure the stretch out (within reason) at any given angle.
Thank you, Marcus
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Offline Andy Robins

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Adjustable Elbow
« Reply #7 on: Sep 16, 2005, 09:44:44 AM »
Ahh, I see now. Looks like a usefull fitting, I take it these are Bought In items, unless you have a special machine for the gore seams, so they can be joined and rotated.
I still dont see why you cant use 61 for drawing, and set it to Bought Out, you can set any angle.

Offline bparrell

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Adjustable Elbow
« Reply #8 on: Sep 16, 2005, 14:06:59 PM »
As the gores are rotated the rise of the centerline of the gores change with the angle thus changing the throat or centerline.You can't just set a gore to be a fixed hieght.Sounds alright here now.Maybe someone else could give a shot at explaining.
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Offline DDI Ltd

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Adjustable Elbow
« Reply #9 on: Sep 16, 2005, 14:12:39 PM »
what a cool looking item. i love the idea of it.
Gary Hussey - Ductwork Design & Installation Ltd

Offline cnash

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Re: Adjustable Elbow
« Reply #10 on: May 12, 2021, 16:09:31 PM »
Anyone figured this one out in all these years?
Trying to get some info from manufacturers on dimensioning depending on angle but haven't gotten anything yet.
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Offline Axl

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Re: Adjustable Elbow
« Reply #11 on: May 12, 2021, 21:22:59 PM »
Never tried a variable angle fitting, but many of my valves have formulas that change the dimensions depending of other values, in my case, pipe length, diameters and other, but you can use it for angle in this case as there is no conditionals in the calculated fields this present a double challenge, but is an idea. This could be really easy, if the length of the gore and the other dimensions obey a formula, if not, then not sure if it is possible.
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Offline DotNet

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Re: Adjustable Elbow
« Reply #12 on: May 13, 2021, 16:17:26 PM »
I'm with Andy on this one. If were using adjustable elbows it's small low pressure round and 61 will be "close enough".

Anyone figured this one out in all these years?
Trying to get some info from manufacturers on dimensioning depending on angle but haven't gotten anything yet.

I would be surprised if you did. There are literally dozens of ways to adjust these. You can make an offset out of an adjustable elbow if you wanted to.
« Last Edit: May 13, 2021, 17:12:18 PM by DotNet »

Offline cadbob

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Re: Adjustable Elbow
« Reply #13 on: May 13, 2021, 19:44:37 PM »
I'm with Andy on this one. If were using adjustable elbows it's small low pressure round and 61 will be "close enough".

Anyone figured this one out in all these years?
Trying to get some info from manufacturers on dimensioning depending on angle but haven't gotten anything yet.

I would be surprised if you did. There are literally dozens of ways to adjust these. You can make an offset out of an adjustable elbow if you wanted to.

LOl exactly, we aren't building space shuttles, :) plus dang raw coils alone have 1/2" Plus/Minus Tolerance.
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Offline cnash

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Re: Adjustable Elbow
« Reply #14 on: May 14, 2021, 18:29:54 PM »
I would be surprised if you did. There are literally dozens of ways to adjust these. You can make an offset out of an adjustable elbow if you wanted to.

I actually had one of our guys bring one into the office so I can see exactly what bends I can make with the ones we buy. Out of a 90 Adjustable I can get (1) offset, (1) 60 Elbow & (2) 30 Elbows. There are more 2-way offsets you can get as well, but I'm not worried about those. No chance of a 45 out of a 90 unless you break it in half and use the top half alone.
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