Offset Newb Notes

[fitzoo7]

Updated 2/11/2025
I’m looking at getting an offset, and I usually do a bit too much research… but they’re expensive and I don’t want to screw it up. There seems to be so much information everywhere, though. I live in Wisconsin, and winter is looong.
Let me know if you think these notes are correct or incorrect, and what you think I’m missing. Also let me know if there’s a similar post already out their that I missed.

Insulated Firebox -

• Pros:
• Can reduce wood usage, can reduce temperature spikes
• Helps with paint protection
• Helps prevent burns - Uninsulated firebox gets very hot
• Cons:
• Could possibly act as an oven in really large sizes, need to ensure smoke is moving

Smoker Size -

• Larger sizes are easy to manage, less temp variations
• Takes more wood

Metal Thickness -

• Thicker metal warps less
• 1/4" is a good thickness, 3/16" for cook chamber, few companies use 3/8”
• Thicker metal can act as an insulator

Key to success -

• Have good pull
• Have a wood source
• Fire management

Cooking Chamber -

• A 48" chamber, will only have 36-38" of cooking surface on the main grate.
• Stay away from ~20% of the grate, from the firebox, too hot.
• Can put water pans or blocker logs to defect air flow.

Smoke -

• Want a clean fire, but not too clean
• Chasing the perfect level of "clean smoke" will cause hair loss. Don't worry too much.
• Some dirty smoke here and there is good.

Wood -

• Use smaller pieces of wood.
• Keep fire small, but HOT, too much wood burning makes for higher temps
• Depends on the offset - Start with 10-12" quarter split (or half split smaller rounds) logs
• Can cut longer logs, eg: 16" down with a mitre saw
• Kindling Cracker and a 4lb sledge hammer to help split the wood
• 20% moisture is considered well seasoned.
• Wetter wood - more smoke, dryer wood less smoke.

Added Notes -

• Cooking chamber - Hottest part is next to the firebox and higher,
• Top grate can run 80-100 F hotter with vertical baffle.
• add wood every 20-30 minutes
• Franklin has a plate deflecting the direct heat from the fire
• Goldee’s has a separate pipe completely separating the firebox from the cooking chamber

Baffle Plate -

• Considered a must by some.
• Baffle plates are metal plates to try and help spread the heat away from the firebox.
• They can impede the smoke, but the meat still should get plenty of smoke.
• PonySoldier prefers a vertical baffle, horizontal can put the hot zone in the middle of the cooker.
• Scoop Baffle seems to be popular - this is a metal piece next to the fire box that forces the smoke to go high. This is used by these brands: Jambo Pits, Lonestar Grillz, Smokeslinger.

Elements -

• Rain is evil and kills the smokers temperatures.
• Use a welders blanket over the firebox in rain to help keep temperatures high.

Reverse Flow -

• Purpose is to eliminate the hotter end being at the firebox, there will still be a hotter side
• Possibly less smoke, produces more radiant heat from huge baffle plate running the length of the cooker.
• Cooks the bottom of the meat faster than the rest

[Huskee]

Sounds like you have a solid grasp on the basics. I'll offer my thoughts, for what they're worth.

Insulated firebox- I've never heard of "Can act as an oven, causing less smoke" so I personally don't agree with that one. You'll get plenty of just fine smoke regardless. Yes it may help you use less wood overall. Mine is not insulated and I live in MI and use it year round. Don't let that be a hangup for you, it's not as big a deal as you might think. But it will help.

I doubt you'll find many that are thicker than 3/8". Mine is 1/4" and let me tell you that is heavy and solid. 3/8" is prob all you'll find, but again, in my personal opinion, please don't feel 1/4" is too thin, it's not.

As a general rule, larger offsets are easier to maintain temps in your target range. But that's not to say they're easy, nor are smaller ones hard. You'll learn your pit, because you'll have to.

Reverse flow- not sure why that would be hard to clean. There's more metal in them, yes, because of the baffle directing the heat & smoke over to the far end, but they're ALL heavy regardless of reverse or standard flow. And while reverse flow might try to eliminate the hotter end being at the firebox, and add to a more even temp spread, it is far from a perfect system. Besides, you can utilize a slightly hotter side to your advantage on cooks, so don't get hung up too bad on reverse flow either, it's not the 'end all be all' that many folks think.

Most reputable brands will have some type of heat plate or baffle system in the standard flow units. Rarely will they just be open underneath unless you're looking at a cheapy from Home Depot or similar. But even with that baffle/plate and thicker steel, yes, you'll most likely find them hotter at the firebox side. Use it to your advantage.

30-45 minutes, nah. I'd guess you'll be closer to 20 mins give or take, maybe 30. Of course a 90-degree sunny day vs. a rainy 38-degree day will vary a lot in that regard. Especially if your cooker is out in the rain, rain is awful on an offset's temps, any cooker for that matter. Rain is worse than snow or cold wind. Even summer rain, your temps will plummet. Be ready to stoke your fire if it starts raining and your cooker is out in the rain, regardless of the outside temp.

Chasing the perfect level of "clean smoke" will cause hair loss. Don't worry too much. Some dirty smoke here and there is good, and clean smoke is good. Don't sweat it too much. I'll try to offer some general fire tips in the next paragraph:

Use small pieces of wood. Keep your fire small, but HOT. You're not powering a steamship across the Atlantic, you just need a fire small enough to maintain a target temp, within reason, but it really should be a hot fire for its size. You'll soon see that it's not a big inferno at all. I happen to find that shorter, say 10-12" quarter split (or half split smaller rounds) logs work fine for my offset. If I get a standard face cord of firewood delivered, and they're usually 16"ish long pieces, I often will hack them down on my miter saw, otherwise too much wood burning makes it harder to keep your temps down. 'Many offsets like to run 275 or so', that's what a lot of folks say, but I really feel it depends on the total amount of fuel you're putting in it- too long of wood pieces = more fuel, and yeah, your fire will be hotter. It's simple math really.

The Kindling Cracker and a 4lb sledge will be two tools you will love when you get into stick burning.

Hope I've touched on some highlights to help you.

[fitzoo7]

Thanks for the response.

Every 20 minutes is a little disheartening

This is where I go the info on the insulated firebox.

https://youtu.be/UF20JGAT5K0?si=vLErbBgBH-ywWu7Z

Reverse flow was kinda hard to get information on.

Baffle plate - what baffles me (pun intended), from my research, is your goal is to have as much smoke hit your meat, and good pull/smoke is the key to the best product. Doesn’t a baffle plate impede the smoke flow, meaning less smoke to cook your meat?

[Huskee]

fitzoo7 Believe me, baffle plate or not, your meat will get plenty of smoke! Some manufacturers have holes in the plate, Yoder for instance does this. Smaller holes nearer the firebox, graduating to larger holes toward end of it as it nears the chimney, this is to allow smoke and hot air through, but less at the firebox side to try to hamper temps and help push more hot air along further.

[58limited]

I can't add much more than Huskee already mentioned. He is right: rain will really drop the overall temp of the smoker. Most of the BBQ restaurants down here do have insulated fireboxes - either manufactured that way or they added thick insulated blankets to cover the firebox. It helps to maintain an even temperature, prevents the heat from radiating out, and provides safety from the hot surface of the firebox (don't inadvertently touch or lean on an uninsulated one!) but they still produce plenty of smoke. They start out with a big fire to heat the whole smoker but quickly go to a smaller but hot fire and they control temps with the stack damper, usually leaving the firebox door mostly open.

On the other hand, a flat unisulated firebox for a home set up can be used to heat other things (beans) - like an old wood burning stove.

A baffle is a must in my opinion but the firebox end is always hotter. I added a baffle to my Oklahoma Joe Longhorn to even out temps. realdocBBQ just posted a thread about the Smokeslinger Liberty 94 which seems to have a very even temp across the cooking area: https://pitmaster.amazingribs.com/fo...-offset-smoker

[realdocBBQ]

Excellent topic and has been part of my very in-depth journey over the last 2-3 years! I love this stuff! I could spend hours and pages and pages going on, lol. People here are already tired of much of my longwinded dissertations, though, I know. lol

First - insulated firebox. On a smallish backyard style pit, it's less of an issue than say, a large commercial operation running continuously every day. Any wood savings is likely to be a relatively minor cost for the backyard cook. You're just not cooking every day, or likely even every weekend. So that's kind of a push, in my book. Insulated will help with paint protection, if you're going to paint your pit. It will help protect from burns, particularly if you have small kids or inexperienced people around your pit. Kids like to touch things. For me, it was a non-issue. Yes, an insulated firebox will lead to a more efficient burn and holding in more of your heat - this can be a good and a bad thing, depending on how you look at it. More efficient, super small fire means less wood burned for a given cook (probably) and COULD potentially lead to slightly less smoke flavor, as you're burning less combustibles and thus releasing less volatile organic compounds into the cook chamber, which is where our flavor comes from. You can use it to your advantage in terms of having to add wood less frequently. It can make it a little more difficult to get your temps DOWN if you happen to overfeed your fire. So, perhaps slightly more temp swings, especially when you're first learning to run things - Huskee has it right, though, you will learn how to run YOUR pit. The more you use it, the better you will get at maintaining and managing it. My backyard insulated direct-flow offset I still get plenty of great, incredible smoke flavor.

I have both, insulated and non-insulated. I like both. Just depends on what I feel like running that day, and I honestly don't know that it is all that affected by the weather, to tell you the truth. I've cooked in 100+ heat (even 110+) and I've cooked well below freezing, down to zero F. Once you learn your cooker, it's not too much of a challenge in my experience to run in either environment. Insulated does add a significant amount of weight and complexity of the build and more cost - if you're buying commercial and not building your own.

Baffle plates - even temps are both overrated and very useful. lol. Depends on what you want to do. I have run pits with different types. For trying to get really even temps, a reverse flow is great (from what I have read and learned, I have never run one personally), but can supposedly lead to slightly less smoke flavor. This comes from often insulated fireboxes combined with the baffle plate running the length of the cooker - you get radiant cooking from below and some lesser convective cooking from above - thus they are very efficient, capturing and delivering more of those BTUs to the meat, so often a smaller fire and amount of wood used - again, especially if insulated. People who have RF I have seen often seem to love them with a rabid intensity. I dunno. A little more complicated to build, perhaps a little more expensive to HAVE built. Again - useful in a corporate environment when you're cooking LARGE amounts of the same thing repetitively day after day and you want them all to cook the same way at the same speed - 40 pork butts all put on at the same time, all pulled at the same time and little time spent rotating, flipping, swapping, etc. No real hot spots. But, for a backyard cooker, I'm less convinced. That's just me.

I actually don't mind some hotter areas - I cook different meats at once, a whole lot. Also a reason for an upper rack on a traditional offset - I like hotter temps up top for things like chikkin and pork belly, briskies and pork butt maybe down on the lower rack. But for a really even even cooking surface, I find a vertical baffle plate is better than most horizontal baffle plates. Vertical directs everything straight up, all cooking is top-down convection, and the area directly behind the baffle can be exactly the same as everywhere else, if well-designed, or even the LOWEST temp in the pit. I build mine now with a vertical baffle. Horizontal baffles can complicate things - first, you get a zone over the baffle with radiant cooking from the plate itself, much like a RF, but it pushes the 'hot zone' directly out toward the middle of the cooker, and really can just kick the can down the road, so to speak, leaving you with a hot zone in the middle instead of next to the firebox. I've done monitored experiments with vertical plates and have settled on this as my preferred method. But I know guys who use a rotating horizontal baffle plate who get good, relatively even temps as well. I've had one of my 250-gallon pits with the vertical plate that had a temp difference of 2-5ºF from the firebox to the collector. Another friend did one on his 16-foot long 1000 gallon pit and he had a 10ºF difference from end to end. Incredible.

Steel thickness - meh. 3/16 on the cook chamber is plenty, and even on the firebox if things are done right. I'd say 1/4" is more than plenty all the way around (even in the the way up north), no need to look for heavier, but I wouldn't kick it out of bed for eating crackers - until it's time to pull it around the yard by myself. See comments about weight of insulated firebox above.

Huskee is 100% right about wood. The more consistent your splits, the better off you'll be about managing a fire. I don't worry TOO much about it, and most of my wood is pretty variable, but I don't mind, I pick smaller splits for certain times, and larger ones when I want to sit on my ass for a while and not have to mess with the fire. Say, I'm reading a book and drinking a beer on the back porch. I've gone an hour with a good gentle solid fire over a good coal bed. This is on both my insulated or uninsulated pits. Ok, not on the big 320-gallon, that one is a hog. When designed and built properly, you can run an 80-gallon up to a 250-gallon on pretty small amounts of wood. Going above the 250 gallon size SEEMS to be a tipping point in wood consumption. I've heard this from many guys, but I've definitely seen a difference in the 250s I've built compared to the 320 I built. It is a bit of a hog. But I can just about feed a division of Airborne with it, so there's that.

That's probably enough to read for now, but certainly I'm happy to talk more about it. I'm not an expert by any means, not a competitor, not a commercial builder or own a retail business doing this. Just a backyard cook who's built a few pits for myself and sold a few. It's been fun to learn and I do feel I've learned a lot. I like to experiment with different sizes, designs and techniques and I'm data-driven, so I do a lot of monitoring on my pits when I finish them, using dual Fireboards and as many as 14 different temp probes at a single time. lol

Basically - I'm a nerd.



Feel free to holler at me if you have questions. We can chat via PM or via text on WhatsApp or something if you want, also.

[lumbrjk]

realdocBBQ - I have been really interested in how the smoke and heat flows through my reverse flow as of late. It seems like most of the smoke and heat would run through the top of the smoke chamber and then out, missing the meat on the lower racks. Have you incorporated anything in your custom builds to help with this?

[realdocBBQ]

You would have to do some experiments to see, but honestly the smoke permeates the whole of the chamber pretty well. The flow might be a bit more brisk on the upper shelves than lower shelves, but the lower shelves are also going to get more radiant heat coming up from the bottom and cook more directly off the baffle plate. These are some of the 'eccentricities' of a reverse flow smoker. I haven't built a RF myself, I prefer the offset design - though I'm considering it.

[Sweaty Paul]

Great response.

[TripleB]

I did basically the same research you are doing 10 years ago. Ended up buying a Jambo backyard smoker with the insulated firebox. A great offset smoker.

About 5 years ago came across and bought a KBQ smoker. Won’t win an offset beauty contest (looks like a trash compactor), but it’s a better offset smoker. Wish I had known about it 10 years ago. Check it out if you haven’t already.

[WI Bubba]

I know zip about running offsets, but maybe Henrik has some thoughts to share.

[Smoker_Boy]

For what it's worth, you can buy a cheap welding blanket at Harbor Freight for $22.

[Uncle Bob]

Lots of cogent info already, and some doesn't align with each other or what you've read. What that really means is almost any design/construction CAN work fine, it's up to the user to figure out how to make that particular unit work. We've all tried to optimize our selection, yet make different choices.

On the reverse flow, you'll rarely see a pro cook facility use that style. The reason I've heard from most of those operators is they don't want to deal with the added radiant heat from the diverter plate across the bottom, it tends to cook the bottom of the proteins faster than the rest. Cross flow smokers operate somewhat like a convection oven circulating the heat all around the proteins with the dominant flow trend from firebox end to stack end.

Older designs have a simple, downward deflector at the transfer portal from the firebox to the cook chamber. These mostly work fine and experienced cooks work around any quirks. The most typical is the first, roughly, 20% of the cook chamber closest to the heat opening is not very useful for low and slow cooking. That's why you'll see various kludges to cope with it; water pans, blocker logs to deflect air flow, whatever. The thing to keep in mind with that style is a 48" cook chamber will only have about 36-8" of useable cooking surface on the main grate.

Regardless of which cooker you choose your fire management skills and adaptability will be the biggest factor in eventual cooking outcome success. The number one factor, regardless of the cooker brand/design/philosophy is you've got to maintain a good, active coal bed. If you let it burn down too much you'll mess your temperature control. After that the wood quality will be a factor as well. Most will say 20% moisture content is well seasoned. Wetter (greener) wood will smolder more comparatively (many pro shops use this "trick" to tweak smoke level). Dryer wood will burn more quickly and produce less smoke (unless you learn how to slow down airflow through your stacking configuration). Lots of factors involved that impact smoke level, burn rate, temp control, and so forth. Too many people make it seem like only one or two factors, but that's because they've figured out what works for them, others will differ because they've learned differently.

I have an LSG Texas edition offset. I chose that one because of the high quality reputation of the builder and that particular model because it has the baffle at the heat transfer portal that directs the airflow upward with the intent to create a high convection action when coupled with the exhaust collector/stack design. And I get to use nearly the entire 48" grate length. This baffle style is often referred to as a scoop baffle to differentiate from the straight through or downward deflector types. The "disadvantage" in some peoples theorizing is that the upper shelf (optional) runs too hot. Yes, it runs 80-100 degrees more than the main grate. A bad thing for the negative thinkers, a good thing for the person who realizes you can cook chicken on the top shelf, beef (let's say) on the main at the same time. Again, a learning preference. I too use the somewhat smaller splits as described above, and typically I can maintain 275ish on a steady basis with an added log every 40 or so minutes in 75-100 degree ambient temps. Since I don't go through wood as fast as daily users my wood runs around 10% moisture content because it sits comparatively longer times in the stack.

[realdocBBQ]

Sage words. Another vote for the vertical scoop/baffle! lol Honestly, I haven't looked at the LSGs like this, I need to go check them out.

[Steve B]

Very good info here. I have an LSG 24x36 offset. It comes with 3 "baffle" tuning plates as they call them. You can move them around to suite your needs. I find that as a longer cook progresses I will usually move the plates a little bit. Prety easy to do with a long skinny flathead screwdriver.
1/4" steel is plenty. 3/8" IMO is probably overkill and will add a substantial amount of weight to the unit.
Yes you will be feeding the smoker every 20-30 min. And Huskee is spot on with using smaller splits and keeping a smaller, hotter fire to maintain temps. Much easier that way.
That's all for now. gotta get back to work.

[fitzoo7]

I did basically the same research you are doing 10 years ago. Ended up buying a Jambo backyard smoker with the insulated firebox. A great offset smoker.

About 5 years ago came across and bought a KBQ smoker. Won’t win an offset beauty contest (looks like a trash compactor), but it’s a better offset smoker. Wish I had known about it 10 years ago. Check it out if you haven’t already.

I’ve definitely looked at the Jambo as well and the KBQ.

My only issue with KBQ it doesn’t seem as fun, no nice roaring fire. It does seem like the closest thing to getting the easiness of a pellet smoker and offset quality.

Why do you feel it’s a better offset smoker?

[Spinaker]

As a long time KBQ owner, I love mine. You can cook a ton of food in a small space. The fire roars right along and the aroma you get coming out of that thing is amazing. I have had mine for over 10 years and it performs every single time I need it.

I would not say it is a "better offset" it is just different. Amazing smoke quality, portable, stores easily and you can cook a ton of food in it. The flavor you get out of that baby is unreal.

[realdocBBQ]

There is a 'manliness' of managing a fire. Some of us like that. It's just a primal thing. Nothing wrong with doing it more efficiently, but it's not what I'm looking for. I like tending a fire.

[bbqLuv]

you may want to take a look see

Home - Lang BBQ Smokers

[TripleB]

I’ve definitely looked at the Jambo as well and the KBQ.

My only issue with KBQ it doesn’t seem as fun, no nice roaring fire. It does seem like the closest thing to getting the easiness of a pellet smoker and offset quality.

Why do you feel it’s a better offset smoker?

Obviously, the "better offset" is a personal opinion, just as Spinaker has a personal opinion. Neither is necessarily right or wrong.

My reasons:

1. The firebox is on top of the unit. From my kitchen window, I can see the fire and know when it is time to add another split. With an enclosed firebox, you can't see the fire. Now I know you can have a thermometer in the cooking chamber with Wi-Fi/Bluetooth technology to tell you when the temp is dropping, but just much easier to take a look out the window.
2. Does not matter how much wood you load into the firebox. The temperature controller will draw the fire in when the temperature parameters are hit. Can't do that with a normal offset.
3. All you have to do is maintain a good coal bed. Which is easy to do. Harder to do in a traditional offset.
4. It is a convection oven. Cooks the food faster. Ribs are done in 3 hours, compared to 5 hours in my Jambo.
5. There are no hot/cold spots because it is a convection oven.
6. I can put heavy smoke or light smoke on the protein based upon how I use the poppets.
7. Adding wood. With a traditional offset, you have to open the firebox door and get a face full of smoke. Which kills your taste buds. The KBQ, you just drop in the wood. Easy peasy.
8. I have produced better BBQ out of the KBQ than I have from my Jambo.
9. Not a real reason why it's better, but the footprint is so small. And very easy to clean.

Drawbacks:

1. It's electrical. Can't run it in the rain, unless your area is covered and you have power.
2. Capacity...somewhat. I bought extra shelves and I can put in 12 rib racks. I could probably get in 2 briskets or 4 butts. Jambo I could get in 4 briskets and 8 butts. But not much more on the ribs. But I don't smoke that much meat. I have done smoked turkeys for charity and can get 5 - 16 lb birds (spatchcocked) in the Jambo. 2 turkeys would be really pushing it in the KBQ and they'd have to be small.
3. Looks like a trash compactor. You will not, NOT get any oohhs and ahhs from your friends. The traditional offset is the man's man smoker, a beast that only a true pitmaster can control....yada yada

My only issue with KBQ it doesn’t seem as fun, no nice roaring fire. It does seem like the closest thing to getting the easiness of a pellet smoker and offset quality. - This is a true statement. I love managing the fire too, but you still are managing a fire and I believe better BBQ.

[fitzoo7]

You’re getting better BBQ than your jambo? Crap.

How often do you have to load the wood splits in, similar to an offset?

[Spinaker]

I run mine in the rain, just throw a sheet pan over the control box and you are good to go!

[TripleB]

fitzoo7 The splits for the KBQ are a bit smaller than the splits for the Jambo. So about 2 beer can size splits every 20-30 minutes. But it’s the coal bed you’re really focusing on. Not if your wood is burning properly (smoldering/incomplete combustion). And I believe I get better, not tremendously better, BBQ out of my KBQ. I still love my Jambo.

[Henrik]

Great thread, not sure I have much to add. I think the reverse flow smokers are a bit overrated. Yes, reverse flow works well on small (backyard size) smokers, but they're not that much better or anything. I built a few, but decided to roll with the traditional smokers instead, with a vertical baffle. Just like @DogFaced PonlySoldier says you get the top-down cooking, which is what you want.

As for pull - most commercial smokers like the Solution smoker, the Goldie smoker, Workhorse, Franklin have the right size smoke stack to create that pull. Use those as a role model so to speak.

And yes, you're getting a wood fired offset: prepared to spend time with it. Putting in a log every hour ain't gonna cut it. But that's the beauty of running an offset, getting to learn the ins and outs of your smoker and at what temps it runs at et.c.

Also, I wouldn't worry too much about different temp zones. Yes, even is good, but I typically use the temp differences instead. For example: I cook chicken on the top rack of my smoker, as I know I get it +20 degrees hotter "for free". Or if I do a pork butt and some other meat at the same time I can cook it at the same time due to temp differences.

Whenever I cook for a crowd, say 8-10 briskets or so, I still have to move them around after about 3-4 hours. That's in a bigger smoker of course, but my point being that no smoker is perfect, you just roll with what you have, no problem.