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Padda1
08-07-2015, 07:02 AM
Hi all,

A couple of months ago I joined the forum to ask your members some advice regarding a wood fired oven build to be used for feeding underprivileged kids that are in the bush with no access to gas or electricity.

Thanks to the kind people who steered me in the right direction offering great advice and some Internet searching on antique wood oven I made my plan and started my build.

It is now a week later and I am currently at the stage where it need the outer skin over the insulation a chimney / smoke extraction system and then mounting on the trailer.

I am a total noob here and have the pics to show you all if someone could just explain how I can do that. As they are located on my phone.

I look forward to your further advice and comments! Thanks again for all your help.

dwfisk
08-07-2015, 07:15 AM
http://www.bbq-brethren.com/forum/showthread.php?t=19770

or just browse the stickeys in the comments & tech stuff part of the forum

http://www.bbq-brethren.com/forum/forumdisplay.php?f=12

lots of options

yakdung
08-07-2015, 07:49 AM
Offshoot of the rocket stove. This is a build of a rocket oven.
https://youtu.be/h4WDZMmkDeo

Padda1
08-07-2015, 08:03 AM
Thanks Dave hope this works

https://db.tt/kj9GZWwj


ok.... have tried the photobucket thing and have tried dropbox... I must be doing something wrong.... sorry all

Padda1
08-07-2015, 08:06 AM
http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150805_095925_zpsndqtrvsu.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150805_095925_zpsndqtrvsu.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150804_140434_zpsio3xwgc8.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150804_140434_zpsio3xwgc8.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150806_134820_zpsfpzjc9aw.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150806_134820_zpsfpzjc9aw.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150805_135019_zpsq55ehq3n.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150805_135019_zpsq55ehq3n.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150805_132435_zpsboq5zcgc.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150805_132435_zpsboq5zcgc.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150807_104022_zpspblybdlx.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150807_104022_zpspblybdlx.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150806_124552_zpsofykrjkj.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150806_124552_zpsofykrjkj.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150807_104045_zps9xd50v8l.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150807_104045_zps9xd50v8l.jpg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Mobile%20Uploads/20150807_104022_zpspblybdlx.jpg (http://s51.photobucket.com/user/taniafrankle/media/Mobile%20Uploads/20150807_104022_zpspblybdlx.jpg.html)

Padda1
08-07-2015, 08:17 AM
Ok finally managed to get the pictures uploaded.

The oven is huge, I included a picture of the aluminium trays to gauge the size of the oven..... by my estimation it will take 5 or 6 racks with 4 to five trays on each rack. So more than enough to feed the 100 plus kids at each sitting.

the dimensions are as follows 1250 height 1000 width and 800 in depth

materials used is : 50mm 3mm square tubing
firebox steel is 6mm
all other internal (and soon to be external) 3mm

Insulation is certified ceramic blanket 25mm (two layers of)

As you can see I still need to put on the doors and the chimney (which will be like a house roof into a chimney flue) not sure if you know what I mean here.
Until I build it onto the trailer I will put wheels on it as this thing is VERY heavy.

I am putting this up here in case there is anyone else who may need to build something like this.... where smoke does not actually enter the cook chamber. I am also building an insulated smoker and will post pics of this once I am back from holiday. This is my attempt at a white oven with the smoker being a black oven. Once it is finished and I see how the thing bakes / cooks I will let you all know. I am sure that I will need to make some modifications but the literature on this type and size of oven is virtually non exsistant.

The air intakes on the side of the firebox are 55mm each. I have 2 brass gate valves for these to regulate the airflow. The butterfly valves you get here all have a nylon lining and I was afraid that the radiant heat may be too much for them and the plastic would eventually crack. Has anyone ever experienced this?

Padda1
08-07-2015, 09:11 AM
Thanks for this link but unfortunately I need to feed more than 100 kids at a setting. As such Rocket stoves and ovens were not viable. Or at least I am not enough of an engineer to manage the intricacies of such a design. I took a smoker plan and had a look at the victorian cast iron oven and went from there.

yakdung
08-07-2015, 10:10 AM
That was not indicated in post #1.

BurntOffering
08-07-2015, 10:35 AM
Normally the fresh air flowing through the valves keep the valves cool as long as they are not attached directly to the fire box, just a short nipple should work fine. I admire the fine work your doing.

Padda1
08-07-2015, 11:32 AM
Thanks Steve, appreciate your kind words and info on the valves.

SmittyJonz
08-07-2015, 02:19 PM
Exhaust would have to go up thru Walls to exhaust stack on top/back or add exhaust stack/channel on outside down to firebox. Thru the walls would help heat the oven more.

Padda1
08-27-2015, 05:05 AM
Hi all,

Just an update on the progress of the oven I have not put the loading brackets on yet or the wheels, this should be easy to do.

Did the first cook in the oven and it reached 200 degrees Celsius on 2 bags of charcoal at sat there for more than 6 hours! I ran out of time so had to open the oven doors after that and just let it cool down. Am sure it would have stayed there for a couple of more hours quite easily.

Hope you enjoy and as always look forward to improvement suggestions and other comments.

Oh obviously I will have to paint it but that will come later.

Cheers all

http://i51.photobucket.com/albums/f363/taniafrankle/First%20Fire_zps2z3oqa1n.jpeg (http://s51.photobucket.com/user/taniafrankle/media/First%20Fire_zps2z3oqa1n.jpeg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/First%20Meal_zpsoujg7vae.jpeg (http://s51.photobucket.com/user/taniafrankle/media/First%20Meal_zpsoujg7vae.jpeg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Inside%20Oven_zpscfg5xr3i.jpeg (http://s51.photobucket.com/user/taniafrankle/media/Inside%20Oven_zpscfg5xr3i.jpeg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Oven_zpsxbpp3zxf.jpeg (http://s51.photobucket.com/user/taniafrankle/media/Oven_zpsxbpp3zxf.jpeg.html)

http://i51.photobucket.com/albums/f363/taniafrankle/Oven%20Doors_zpsq9ajxbcs.jpeg (http://s51.photobucket.com/user/taniafrankle/media/Oven%20Doors_zpsq9ajxbcs.jpeg.html)

Smoke Dawg
08-27-2015, 05:48 AM
Impressive work and a good cause :thumb:

krex1010
08-27-2015, 06:51 AM
That is one impressive cooker!! And for a noble cause. I can see your work providing lots of people with good meals, good times and great memories for many years. Well done!

Padda1
08-27-2015, 10:17 AM
Thanks so much for the compliments @smoke Dawg & @krex1010

Fwismoker
08-27-2015, 10:31 AM
Very impressive build, and a more impressive heart. Looks like it's getting enough airflow for what you're burning. I assume you're burning down small pieces of wood and then closing the bottom door?

Padda1
08-27-2015, 10:55 AM
Hi Fwismoker,

My initial idea on the fire was to go 50 / 50 with a wood / charcoal mix. However for some reason the wood was quite wet (probably due to recent rain) so I ended up taking the wood out and going 100% charcoal. Obviously when I take it in the bush it will be 100% wood that we will use because there are no shops anywhere but always loads of dry firewood.

Do you think there will be a substantial increase / decrease in temperature if I use just wood?

Padda1
08-27-2015, 10:56 AM
Oh sorry didn't answer your second point. I did close the firebox door and the charcoal kept burning beautifully.

Fwismoker
08-27-2015, 11:02 AM
Hi Fwismoker,

My initial idea on the fire was to go 50 / 50 with a wood / charcoal mix. However for some reason the wood was quite wet (probably due to recent rain) so I ended up taking the wood out and going 100% charcoal. Obviously when I take it in the bush it will be 100% wood that we will use because there are no shops anywhere but always loads of dry firewood.

Do you think there will be a substantial increase / decrease in temperature if I use just wood?

Your setup looks like it's setup more for charcoal so what I'd do is pre burn your wood and then shovel it in. I'm sure you can make a nice little pre burn container and take it with you or just burn on the ground, either way their are some nice ideas on the forum.

The pre burnt wood will burn hotter than charcoal but should work fantastic in it, you just don't have the flow to burn it in the cabinet itself cleanly.