rocket grill not running right

Hey guys im having trouble getting my grill to burn right. Its acting like its starving for air. The chamber is a pipe lateral set at 45 degrees. Need help guys maybe a 90 instead of 45?

My advice,

It lacks insulation,

It won't be powerfull enough for being a barbecue.

Metal is doomed, and 45° rockets are finicky if i remember well.

Go for refractory clay flue pipes Batch rocket style.

You have a piece of flat stock as your fuel shelf. Is the unseen end perforated to act as a grate?
I second the insulation suggestion as well.
Sure metal will die in a properly functioning rocket, but you might as well run it till then.
Maybe set the bottom into a drum of refractory/insulative material, so when the metal fails there is a backup.

Ok so iim going to make it into a 90 degree. I have the other half of the tank left to the side so I can make a insulation dome. Ill fill it with perlite. Sound good? And yes the fuel plate is perforated. So this design to a conventional rocket but with a large cooking tank. I built one before but it was small. Ill post it on a new topic

Insulation and 90 are good suggestions.

The other thing I noticed is that the grill opening is so large. You (will be) taking the fast moving air from the chimney in a small area and then dispersing it into a much larger area. It to me looks like an inverted nozzle, which slows fast moving air. You will probably have 1 good hot spot on the grill, but have a lot of cold area.

Shrinking the grill size (if possible) to smaller cook surface.

I didnt think of a cone. I was just going to use a plate. Ill let you guys know how it will work out

Ok guys heres where im at. The bottom where the 90 is im going to wrap with heat insulation and fill with lava rock

Austin, i used lava rocks to spread the heat on the hoizontal batch box rocket barbie. I think i need several layers for it to spread the heat.

http://donkey32.proboards.com/thread/799/barbie-core-horiz

If the pics don't show, click on the blue link next to the little crosses.

The batch box is too large for the heat riser. And it smokes a lot before getting to temps. Works wonderfully as a plancha. As a barbie, not so well i need more lava rocks. I haven't tried the oven yet. Well, sort of. I tried boiling water on top, but it didn't even remove the paint, and water was just simmering. Too much radiating surface into that barrel cutoff.

I could not view your pictures. But I did see your video. Tomorrow ill have the bottom welded on and the wheels as well. Then ill fire it up and snap some pics. I wrapped the 90 with high heat fiber insulation. And around it poured 1 cubic foot of red lava rock around the insulated 90. For the cover lid im going the cut two 3 inch holes as a exhaust. The two 3 should slow the flow but yet still allow the same amount of air to escape.

You might have to be registered to view the pics, tho, i didn't think so. You don't have a link in blue next to the disapeared pic cross?

Hey guys I found some good sticks in the yard and guess what 600 degrees at the top of the grill!!! Its been holding 550 for 30 mins off of a arm full of sticks!! Hell yeah guys!

That's good enough for pizza.

ok guys Im finished with the grill heres the youtube link

https://www.youtube.com/watch?v=jye8d62lPXM&feature=youtube_gdata_player