South Swedish Reverse flow offset (my first build)

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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 10th, 2018, 1:00 pm

There will be a frame around the damper to get it sealed properly when closet (like the CC)


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Re: South Swedish Reverse flow offset (my first build)

Post by Big T » June 10th, 2018, 8:18 pm

It's fine to have it too large but it can't be too small or it can lead to problems.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 3:54 am

Big T wrote:It's fine to have it too large but it can't be too small or it can lead to problems.
That's what I thought as well. Image

It seems like there is different schools with mastering the fire in a smoker. Some people have very small inlet dampers and some have none just let the fire box door stay open?

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Re: South Swedish Reverse flow offset (my first build)

Post by Rodcrafter » June 11th, 2018, 5:39 am

Cool


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 7:25 am

Rodcrafter wrote:Cool


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Thanks man! Image


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South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 6:38 pm

Front inlet damper done. Mesh protection inside. Safety first you know Image
ImageImageImage
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Last edited by greenteng on June 11th, 2018, 6:38 pm, edited 1 time in total.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 6:59 pm

I made one at the opposite side slightly smaller.
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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 7:04 pm

Transportation hangers for the stack manufactured and installed.
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Re: South Swedish Reverse flow offset (my first build)

Post by Big T » June 11th, 2018, 7:29 pm

Nice stack holder. Do you have a way to make fine adjustments to your intake or does it just hang open ?


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 8:29 pm

Big T wrote:Nice stack holder. Do you have a way to make fine adjustments to your intake or does it just hang open ?
Thanks!

Nope. It will only be hang open. But I can make the lid stand fast in different positions. But it will probably not be as delicate as a gate or butterfly valve. I think it will work. I’m aiming for a clean burn.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 8:41 pm

ImageImageImageImage

Fire basket made. I will trim the side closest to the door to ease split adding.


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Re: South Swedish Reverse flow offset (my first build)

Post by ajfoxy » June 11th, 2018, 9:59 pm

Very nice. Coming along really fast now.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 10:17 pm

ajfoxy wrote:Very nice. Coming along really fast now.
Yep, trying to be as efficient as possible when building. The deadline is two weeks ahead. Image


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Re: South Swedish Reverse flow offset (my first build)

Post by Dirtytires » June 11th, 2018, 11:23 pm

Not being critical, but you are going to have a tough time controlling air intake with that damper. Afraid your fire is going to be hard to keep under controll and thus your temps are going to fluctuate widely. Air intake and exaust are crucial.



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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 11:40 pm

Dirtytires wrote:Not being critical, but you are going to have a tough time controlling air intake with that damper. Afraid your fire is going to be hard to keep under controll and thus your temps are going to fluctuate widely. Air intake and exaust are crucial.
You might be right? We’ll see. They can be fully closed and they are adjustable. As I wrote before, there seems to be different schools. Some people adjust the heat with dampers and others have the fb door open and adjust the heat with adding splits.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 11th, 2018, 11:46 pm

I’m thinking if cutting out another damper crossover the throat to be able to feed the draft. ImageImage


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Re: South Swedish Reverse flow offset (my first build)

Post by Dirtytires » June 11th, 2018, 11:59 pm

Too high....itll tend to act like a chimney....in my humble opinion.



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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 12th, 2018, 9:59 am

Dirtytires wrote:Too high....itll tend to act like a chimney....in my humble opinion.
Ok. If I lower it an inch or so? Still chimney acting?


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 12th, 2018, 10:02 am

Looking at the pictures of the fire basket I’m concerned that it might sit to high? The intention with good clearance to the bottom was to get good space to scrape out the ashes while using the unit at the same time. What’s your thought regarding the basket?


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Re: South Swedish Reverse flow offset (my first build)

Post by Rodcrafter » June 12th, 2018, 1:48 pm

My personal experience is I would have made the fire basket closer to the bottom to allow the fire more room to burn since you are looking to use sticks. I believe you can rake the ash out with a small bar or poker.
I wouldn’t add another damper to control draft unless you were making the baffle plate adjustable at the opposite the FB. Any cool air input other than FB intakes I believe would be counterproductive.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 12th, 2018, 3:06 pm

Rodcrafter wrote:My personal experience is I would have made the fire basket closer to the bottom to allow the fire more room to burn since you are looking to use sticks. I believe you can rake the ash out with a small bar or poker.
I wouldn’t add another damper to control draft unless you were making the baffle plate adjustable at the opposite the FB. Any cool air input other than FB intakes I believe would be counterproductive.


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Noted! That’s what I thought. I will build a new basket 3-4” more narrow than the present one. I can build a grate from this basket to do fast grill in the firebox.
I’ll skip that extra damper for now. If it turns out i need it later I can always cut it out and weld hinges, put new paint and it will not be the end of the world. Image


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Re: South Swedish Reverse flow offset (my first build)

Post by Svahna » June 13th, 2018, 7:00 am

Tjenare broder.

En till svenne banan här :)
Har du förstått dig på kalkylatorn? Jag vet vad jag ska bygga och ungefär vilka mått men skulle behöva hjälp med storlek på venthål o dyligt.

Sorry guys. that was Swedish . LOL


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 13th, 2018, 8:28 am

Svahna wrote:Tjenare broder.

En till svenne banan här :)
Har du förstått dig på kalkylatorn? Jag vet vad jag ska bygga och ungefär vilka mått men skulle behöva hjälp med storlek på venthål o dyligt.

Sorry guys. that was Swedish . LOL


>Jimmy
Tjenare!

And welcome to the forum.

I used feldons calculator before I entered this forum. http://www.feldoncentral.com/bbqcalculator.html

Acc to Feldon the intake vent hole should be:
firebox volume (gallons) x 0,003 = The hole in sq inch.
Don’t forget to convert our litres and centimetres to gallons and inches.
Check Feldon out. He explains every bit in an easy way. Other way I think the guys here are more than glad to help. They’ve help me a lot Image

//fredrik


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Re: South Swedish Reverse flow offset (my first build)

Post by Rodcrafter » June 14th, 2018, 12:42 am

I don’t what you said in Swedish but the calculator(s) on this site are very helpful.


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Re: South Swedish Reverse flow offset (my first build)

Post by greenteng » June 16th, 2018, 3:10 pm

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New fire basket. This one should work better I think
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