Bill Mills

Might be that an insulated bell over the top of the rocket could bring the heat back down to the right height to enter the drum smoker?  Then you need a chimney to draw out the other end?  Huge guess from a newbie.

I've been looking at lots of different ideas for abeing outdoor cooker.  The Aprovecho simple L tube cooker looks a LOT  easier to build.   How does it compare to a J tube if both are made of brick?

I suspect that the J takes a bit less active fire management once you have it running.

Seems like the J Is taller if you follow the 1/2/4 ratio.  Will an L tube Aprovecho  of the same height have similar performance?  

Thanks.