BBQ design input ne...
 

MegaSack DRAW - This year's winner is user - rgwb
We will be in touch

[Closed] BBQ design input needed.

57 Posts
20 Users
0 Reactions
179 Views
Posts: 36
Free Member
Topic starter
 

Next project is the barbecue. Looking to build something in a continental style with an enclosed cooking area and chimney. Was thinking about basing it around some 600x600mm and 900x600m concrete slabs.

I have some galv steel drain-channel grids for use as a charcoal deck (to keep the hot stuff off the slab). Then was going to get some made to measure stainless steel grills. One full size and one about 1/3rd as deep as a warmer shelf. Was thinking that I could leave a void in the brick mortar on the inside of the box into which the charcoal and cooking shelves can slide.

I think I need to put a lip at the top of the cooking box to keep smoke going through the chimney. chimney is going to be a square cut out of the slab and then mortared on top of a few bricks.

Cooking area will be about 410mm x 480mm deep I think. Dont think I need anything much bigger, especially with the warming shelf.

ANyone done something similar, got any tips? Am I missing anything?

[img] [/img]


 
Posted : 14/07/2011 9:58 am
Posts: 0
Free Member
 

maybe have the hole in the chimney pointing away from the person cooking?

when's the bbq 😉


 
Posted : 14/07/2011 10:11 am
Posts: 36
Free Member
Topic starter
 

I think I might have the hole left and right as the back of it is going to be up against some gabian baskets. good point though.

when's the bbq

Since it is bound to rain as soon as I have finished building it, allow 3 weeks 🙂


 
Posted : 14/07/2011 10:14 am
 kevj
Posts: 0
Free Member
 

Are you adding in a vent lower than the coals shelf? Maybe leave 30mm gaps in between bricks similar to weep holes round the back?

You may also want to have the aperture through this slab bigger than the the side opening of the chimney. This should aid the stack-effect and you'll have a hotter BBQ with the air being 'sucked' up and through the coals.

If you make lip slightly deeper you could fix hooks to the U/S of the roof slab and you will have a smoker!


 
Posted : 14/07/2011 10:24 am
Posts: 36
Free Member
Topic starter
 

why vent the back when there's a gert big hole at the front? I suppose it could help with draw at the back?

If you make lip slightly deeper you could fix hooks to the U/S of the roof slab and you will have a smoker!

removeable wooden shutter at front though....good idea!


 
Posted : 14/07/2011 10:28 am
Posts: 50252
Free Member
 

Upturned shopping trolley. Job done.


 
Posted : 14/07/2011 10:30 am
Posts: 36
Free Member
Topic starter
 

dont fancy your recipe much

[img] [/img]


 
Posted : 14/07/2011 10:31 am
 kevj
Posts: 0
Free Member
 

Stoner - Member

why vent the back when there's a gert big hole at the front? I suppose it could help with draw at the back?

Not only for supplying the rear coals with oxygen, the smoke will want to rise vertically rather than swirling as the supply is (more) balanced.


 
Posted : 14/07/2011 10:47 am
Posts: 36
Free Member
Topic starter
 

gotcha.

"kevj vents" added to design 🙂


 
Posted : 14/07/2011 10:51 am
Posts: 23092
Full Member
 

i wouldn't really want to cook on galv steel. I'd stock up on milk if you do


 
Posted : 14/07/2011 11:01 am
Posts: 36
Free Member
Topic starter
 

not cooking on galv steel, cooking on stainless. galv is just the coal bed tray.

Why, will there be toxic vapours?


 
Posted : 14/07/2011 11:02 am
Posts: 23092
Full Member
 

yeap - will make you feel quite poorly. Drinking milk helps to flush it out of your system though


 
Posted : 14/07/2011 11:04 am
Posts: 36
Free Member
Topic starter
 

harrumph. will have to think about something different for the coal tray.

Perforated mild steel OK?


 
Posted : 14/07/2011 11:07 am
Posts: 23092
Full Member
 

mild steel will fine. Galv would eventually be ok once its been hot a few times, but by then it won't really be galvanised anymore so you might as well start off with mild steel to begin with

And unless its pretty thick I'd go with a welded mesh rather than perforated sheet. Perf costs a fortune and in the heat it'll go all floppy


 
Posted : 14/07/2011 11:08 am
Posts: 36
Free Member
Topic starter
 

ah, but I have galv steel grids lying around whereas Id have to source some steel for the burn tray.

SO if I cook the nuts off the galv a few times until it looks like its oxidizing that will get rid of most of the zinc wont it?


 
Posted : 14/07/2011 11:10 am
Posts: 23092
Full Member
 

categorically? - perhaps 🙂


 
Posted : 14/07/2011 11:13 am
Posts: 12079
Full Member
 

No vents needed, never seen any on the fully continental bbqs round here:

[img] [/img]

<smug mode>Mine's built into the house and uses the chimney flue</smug mode>

<less smug mode>You can't light the chimney at the same time as the BBQ or you end up with a house stinking of chorizo and morcilla</less smug mode>


 
Posted : 14/07/2011 11:13 am
Posts: 0
Free Member
 

Galv gives off cyanide fumes, best avoided


 
Posted : 14/07/2011 11:13 am
Posts: 36
Free Member
Topic starter
 

need to find a strong enough, fine spot weld mesh then for the burn tray. 🙁

that one doesnt have a patented "Stoner Beer Tray" feature to one side though mogrim 😉


 
Posted : 14/07/2011 11:19 am
Posts: 23092
Full Member
 

any chump with a welder could knock something up for a few quid for you, (or a donation of alcohol or biscuit based currency - its job you could knock out in a teabreak). Doesn't need to be a mesh, just straight thick bars spaced close together. Like the grate in a coal fire.

or you could go welderless - notch two rails with an angle grinder then lay steel bars across them


 
Posted : 14/07/2011 11:29 am
Posts: 0
Free Member
 

You'll need to make sure the chimmney is tall enough to give you a draw otherwise you'll just get a face full of smoke. My BIL tried one of these and had to add about 2 foot to the chimney as well as bringing down the level of it so that the smoke was drawn upwards.


 
Posted : 14/07/2011 11:33 am
Posts: 36
Free Member
Topic starter
 

or you could go welderless - notch two rails with an angle grinder then lay steel bars across them

thats a n idea. I could do that as have the angle grinder. just need to salvage some rebar from somewhere.


 
Posted : 14/07/2011 11:36 am
Posts: 36
Free Member
Topic starter
 

if I suffer similar fate as your BIL jools, then trial and error will be the only solution.


 
Posted : 14/07/2011 11:37 am
 kevj
Posts: 0
Free Member
 

Read up on [url= http://www.google.co.uk/search?hl=en&rlz=&q=stack+effect+chimney&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&biw=1440&bih=770#um=1&hl=en&tbm=isch&sa=1&q=stack+effect+&oq=stack+effect+&aq=f&aqi=g3&aql=&gs_sm=e&gs_upl=68769l68769l2l68931l1l1l0l0l0l0l161l161l0.1l1&bav=on.2,or.r_gc.r_pw.&fp=b907eeacb4efb3f8&biw=1440&bih=770 ]'Stack Effect'[/url]
All the physics have already been done for you. A good plentiful supply of clean air at the base, a high chimney, preferably narrowing as it rises so the air speeds up, drawing in more cool air below to supply the fire. Any smoke is drawn upwards and out the top.


 
Posted : 14/07/2011 11:46 am
Posts: 0
Free Member
 

I can see the point in maximizing the air draw if you wanted a forge but won't that be a tad hot and go though the charcoal a bit fast for a BBQ?


 
Posted : 14/07/2011 11:56 am
Posts: 462
Full Member
 

On a related but useless note, I tried my new Weber bbq last night. It's amazing. I got a chimney thing as wel to light the coals. Two sheets of newspaper and ten minutes! Bootiful.

We have a brick thing in the garden, and it is rubbish for cooking things on. The bit for coals is too shallow, there's insufficient airflow, and access to the back of the grill is difficult when it's hot which means sliding the tray out each time. Evidently the landlord didn't put as much effort into its design as you are 🙂


 
Posted : 14/07/2011 12:04 pm
Posts: 4
Free Member
 

This is mine which I built around a 4 burner gas barby.

[img] [/img]


 
Posted : 14/07/2011 12:21 pm
Posts: 36
Free Member
Topic starter
 

bloody hell konastoner. When are the invites going out for dinner?


 
Posted : 14/07/2011 12:30 pm
Posts: 4
Free Member
 

I'll ask the wife to see if STW can pop around.............

It's seen plenty of action. The most catered for in one sitting so far is 28.

Burgertastic 😀


 
Posted : 14/07/2011 12:41 pm
Posts: 3
Free Member
 

You'll need to have some kind of device for regulating the air flow to the coals a la Webber kettle. You need plenty of air to start to get them going, then be able to close it right down to cook at a sensible temperature or you'll incinerate everything.

Not sure why you want a chimney. The reason BBQ food tastes good is nothing to do with the charcoal, its the fat dripping off the food falling on to the hot coals and vapourising that gives the BBQ taste. The best BBQ's have a lid to ensure this vapour circulates around the food for as long as possible

Final point is that you get a lot of fat dripping off the food, so you will need some kind of removable drip tray under the coals or you will be be in the bacteria growing business


 
Posted : 14/07/2011 12:48 pm
Posts: 0
Free Member
 

We've got a built in barbecue.

One tip. Make sure the shelves can be put at different heights to avoid scorching/raw food.

Could you use an old grill tray from an oven to put the charcoal in? I looks like it would be the right dimensions.


 
Posted : 14/07/2011 1:02 pm
Posts: 0
Free Member
 

I trust that you're maintaining the traditional standards laid down by generations of builders before you and you're starting this project before finishing the pergola.


 
Posted : 14/07/2011 2:21 pm
Posts: 0
Free Member
 

One tip. Make sure the shelves can be put at different heights to avoid scorching/raw food.

We simply make sure that we have the charcoal laid out so that it's very hot at one side [piled up] tapering down to no charcoal at the other
This allows you to move the food to the best temp at any given time


 
Posted : 14/07/2011 2:28 pm
Posts: 0
Free Member
 

I have to say that, even though the continental BBQ is certianly nice to look at, nothing i've tried comes anywhere close to a proper kettle BBQ with lid. Indirect BBQ cooking is really useful and very tasty. Perhaps a different build with space for something like Konastoner is the way to go.


 
Posted : 14/07/2011 2:29 pm
Posts: 0
Full Member
 

Our old house's BBQ had a whinch to lift the food tray up. That was pretty cool.


 
Posted : 14/07/2011 2:41 pm
Posts: 36
Free Member
Topic starter
 

pegola already finished don simon....hence new project.

back with slabs and bricks from the builder's merchant. They only had the hefty council ones in stock...it's going to be a mighty sturdy barbie.

going to leave a rebate in the mortar joints on the inside of the BBQ walls to take grills and trays and different heights. Might also score half way grooves in the bricks with the steel saw if I think 70mm is too big a step in one go.

will also be using a warming rack higher up the walls to give different temps.


 
Posted : 14/07/2011 2:42 pm
Posts: 0
Free Member
 

Have you thought of incorporating a rotisserie?

http://www.planetbarbecue.co.uk/sfrotigrill.htm


 
Posted : 14/07/2011 2:49 pm
Posts: 36
Free Member
Topic starter
 

Have you thought of incorporating a rotisserie?

yes, but Id make my own 🙂


 
Posted : 14/07/2011 2:59 pm
Posts: 50252
Free Member
 


Have you thought of incorporating a rotisserie?

*Ponders obvious gag....*


 
Posted : 14/07/2011 3:06 pm
Posts: 36
Free Member
Topic starter
 

meatspin? 😉


 
Posted : 14/07/2011 3:08 pm
Posts: 50252
Free Member
 

I was thinking of a nice spitroast, but whatever floats your boat, dear boy.....


 
Posted : 14/07/2011 3:09 pm
Posts: 0
Free Member
 

If I was building my own, it would have to have the following:

Smoker
Griddle
Coal & Gas Capable
At least 2 shelves (cooking & warming)
Ability to cook in the rain and not get too wet
Cold storage (Fridge or cool box inbuilt)
Ability to use as a chiminea, or one built in somewhere
I'm sure there are loads of things I haven't mentioned that are also essential!

I would go sideways, rather than up with a BBQ, as its easier to control the temp, very similar to KonaStoner's setup, would also be better for smoking food.


 
Posted : 14/07/2011 3:12 pm
Posts: 4
Free Member
 

meatspin?

If you do want a meat spin, use the motor off an A4 laminator. Heat resistant and 240vac.

Just a tip, i'll leave you to think the rest through.


 
Posted : 14/07/2011 3:13 pm
Posts: 9516
Full Member
 

Konastoner - are you an Aussie, that barbie is very nice?
Ours is just 2 small brick walls with a gertbig lump of york stone across the top, onto which we balance our very cheap bargain bucket barbeque. Funnily enough this sits beside the pergola, which on reflection is not a good idea, as it's going to go up in flames one day.


 
Posted : 14/07/2011 4:26 pm
Posts: 4
Free Member
 

Konastoner - are you an Aussie, that barbie is very nice?

Ha ha thanks but i'm no Ausie, just a welshman who was bored one day. All you see in the photo is left over building material from a 6 year garden build, it was doing my head in lying about the place and the barbeque you see in the photo had lost its wooden stand. The light bulb was well and truely switched on!

I must admit though it is commented on rather a lot by guests.

I Had a couple of fillet steaks on it tonight as a matter of fact 😀


 
Posted : 14/07/2011 9:53 pm
Posts: 0
Free Member
 

You NEED a dog powered turnspit.

[url= http://farm5.static.flickr.com/4053/4213369690_8753c563fe_z.jp g" target="_blank">http://farm5.static.flickr.com/4053/4213369690_8753c563fe_z.jp g"/> [/img][/url]
[url= http://www.flickr.com/photos/dtruslove/4213369690/ ]The Dog-Powered Turnspit[/url] by [url= http://www.flickr.com/people/dtruslove/ ]Daniel and Merriwyn[/url], on Flickr

This turnspit would originally have been powered by a small dog running within it. The energy the dog generated was then used to power a mechanism that turned the meat cooking on a spit.


 
Posted : 15/07/2011 8:02 am
Posts: 36
Free Member
Topic starter
 

that is SOOOOOOOOO cooool!!!

Anyway, having accepted it shall never be as amazing as konastoner's inferno maker, finalised layout with the missus this morning. A few compromises needed in terms of symmetry and balance due to sizing, but I think it'll work. going for a 500mm square cooking area. Im also toying with making it convertable into a smoker....with a shutter door and baffles for the chimney 😉

We'll see how far we get today...

[img] [/img]


 
Posted : 15/07/2011 8:20 am
Posts: 11937
Free Member
Posts: 12079
Full Member
 

Final point is that you get a lot of fat dripping off the food, so you will need some kind of removable drip tray under the coals or you will be be in the bacteria growing business

No you don't, the fat all falls on the coals, and burns up. Even if you did start growing bacteria (pretty much impossible not to, really, and I'm not entirely clear what risk it really involves) the next time you light up the thing you'll kill most of it.

Not sure why you need a back vent, either - mine certainly doesn't have one and burns fine. I don't load it up massively with coals, though - there's loads of space around the sides for air to get in.

Another pic from the same DIY chain, with beer shelf:
[img] [/img]

Pertinent link: http://www.thedailymash.co.uk/news/society/barbecues-shit-201107154080/


 
Posted : 15/07/2011 9:20 am
Posts: 36
Free Member
Topic starter
 

Slow but sure.
And if any builders want to criticise my bricklaying, theyre welcome to email me their Excel models first. email address in profile 😛

[img] [/img]


 
Posted : 15/07/2011 11:02 am
Posts: 12079
Full Member
 

Where's the beer shelf?

And that dry stone wall is cheating!


 
Posted : 15/07/2011 11:40 am
Posts: 36
Free Member
Topic starter
 

that's dry stone walling for numpties. 😉

Beer shelf comes at next level....


 
Posted : 15/07/2011 11:59 am
Posts: 36
Free Member
Topic starter
 

Get your umbrellas out, the BBQ is done. took a few days given the weather.
Need to take some brick acid to it to tidy up where some rain has made the water run.
[img] [/img]
[img] [/img]
nicked one of the wife's pots for a chimney piece...havent told her yet. Just need to put a terracotta dish on the top as a rain baffle.
[img] [/img]
Will get some custom sized stainless steel grill shelves off ebay and give it a test drive.


 
Posted : 18/07/2011 7:32 pm
Posts: 0
Free Member
 

Good effort.


 
Posted : 18/07/2011 7:35 pm
Posts: 36
Free Member
Topic starter
 

ha, forgot the pics of the chimney opening. Made a hell of a noise. If in doubt throw machinery at it:

[img] [/img]

[img] [/img]


 
Posted : 18/07/2011 7:40 pm
Posts: 5902
Full Member
 


 
Posted : 18/07/2011 7:40 pm
Posts: 0
Free Member
 

Looking good.

Are you wanting plants to grow in the stone baskets? If so there may be some scorching when the barbecue is lit.


 
Posted : 18/07/2011 10:12 pm
Posts: 36
Free Member
Topic starter
 

going to put some climbers, trailers and maybe some alpines stuffed in the cages. But there's plenty of space further away from the BBQ. Not that I think it will get particularly hot except right up against the chimney pot.


 
Posted : 19/07/2011 8:50 am