Lava rocks barbie roket?

Having a success lately with my 6 incher rocket. I thought why not make myself a rocket barbecue? Eight incher i'd think, since i have plenty of tube to make the form.

I thought, i need a layer of something to spread the heat and keep it more constant. I thought, would lava rocks, like on gaz barbies work?

I will have a cast iron plate too i think. for different uses.

Any advice? Sucessfull barbecues made with rockets?

Thanks a lot.

Max.

Max,

I have a small rocket barbecue made from pavers and an old portable 14.5" Weber kettle grill. I have considered using lava rocks, but it is so small the heat seems to distribute well enough -- and it didn't come with the charcoal grate. You can see it here:

http://www.xmission.com/~acparker/LCS/Lion%20Cub%20Stove.html

A much more refined rocket barbecue by Steve T. in the UK can be seen here:

https://picasaweb.google.com/lh/photo/XQYtZ-G8bmKhXDembw0ZxM-5CnRNt1B7sswHYiHn-2A?feat=directlink

He uses an angled gravity feed that takes wood chips. The bottom of the vertical pipe is open to provide primary air (I assume there is a grate involved). He has used lava rocks in the barbecue. It is not insulated, nor is mine. They both would likely work more efficiently with insulated combustion chambers/flues.

Hi Andrew.

Thanks a lot for the reply.

Ok, i'll do an insulated one that's for sure.

http://youtu.be/Paj4hiZgGc0

First atempt