please help another newbie rocket oven build

Hi all,
I was going to build a wood fired dry stack oven, but I figured they wouldn't do to well for baking bread.
So changed to looking at a rocket oven.
So far, I dry stacked the idea
And would like some feedback.
Basically: would this work?

Once I get the base right, I will move onto the oven.
I got an oil drum that will be the outer layer and a narrower steel tube (inner coil) that will become the baking chamber.
Wish me luck as I am not hindered by too much knowledge

Hi Anne;      
Welcome to Permies!
And congratulation's,  for starting down the learning path to being a full fledged Rocket Scientist!

I'm hoping that your photo is just a demo to show your idea???
Your wood deck would not be a good starting point.

Dry stack rockets do work, but not very well.  Too many air leaks .
A mix of one part dry clay and 3 parts sand make a fast easy mortar to stick those bricks together with no air leaks.
Clay mortar is easy on the hands and comes apart easily when its time to rebuild or move.
What dimension's are you using?  You will want to be 7.5" square  all the way to the riser.
Your  burn tunnel roof (horizontal) should be no more than 10-12" long
The metal you used to support your bricks will not hold up... its too hot there.
Instead you want your bricks to  span the gap.

EDIT) I just noticed your bricks.  The ones for the roof should be solid brick with no holes,  your current one will not last long.

Once you get your rocket flying then your plan for double barrel oven should work great

Thanks Thomas
Our solid bricks here are very soft. These are quarry bricks. Red clay and used for wood fired ovens and so on.
And yes, this is just a demo. No ways I would fire it on my wooden deck!
The fire chamber inner dimensions (as well as the others) are about 18-19 cm by 18-19 cm.
The bricks are 18 cm long, which is why I needed the angle iron to bridge the gap.
I figured it would cope with the heat.
If I need to bridge with bricks, I'll have to redesign anm make everything a bit smaller. That is actually what I had before, but this looked nicer.
By the way, the intention was to use mortar. The dry stack would be nice, but it will leak.
I like the looks of the brick construction.

My other idea was to try find flue pipe and "lay" that inside this construction and fill the free area with vermiculite.
I've found vermiculite, but I do not know if I can get my hands on flue pipe.

I would like to work with the materials I got. Luckily I got access to welding, grinding and cutting equipment.

It really is a work in progress... I don't even know where to place it!

If you need your burn tunnel roof to be as wide as your bricks, it is possible to arrange the bricks as shown without steel. You just need to have the whole structure supported well enough that the sides cannot spread apart. The roof bricks will lean against each other and stay up (at least as long as they do not crack from the differential heating.)

You will want the feed tube sides to be higher than shown, about 1/3 the height of the riser from the burn tunnel floor, or equal to the length of the firewood you will use so you can cover the feed in an emergency. This will also help reinforce the roof bricks. Clay mortar will not stick the bricks together, but it will seal the air gaps and give solid friction fitting to steady the bricks.

Thanks for all extra info!
I'll play around a bit more.
And keep everyone posted

Minor update:
I managed to do away with the steel
Now looking at a burn chamber of 19 x 19 cm (7.5 x 7.5 inch) Just a little larger than in Tim Bartlet's ebook. Height is now 26-27 cm (about 10.5 inch, adjustable)
Burn chamber is 19 cm long (7.5 inch)
Riser is 19 x 19 cm (yep, 7.5 x 7.5 inch, adjustable height).
It's still on my wooden deck, so not yet ready to be fired (painting walls is priority 1)

Rebuild outside. Still dry stacked as it is not in it's final position and I hope it works. Too much wind to try now.
Top layer is angled to fit the pot. Inside is space tor a trivet and another pot for baking bread.
I left it as it looks nice. Still want to construct a "proper" oven though

Fired up, and runs pretty well.
Even roars like a rocket, despite being dry stacked.
Oven design is next....