After putting it in the barrel and it not working I took it apart and put it together outside. Shortening the burn chamber gave me a cleaner burn so I put it back together in the barrel with the shorter burn chamber.
Now it wont burn like a J Tube though. I am getting smoke back.
My feed height is 8”
Burn tunnel is almost 16” the riser is a 5 minute riser on with 8” stove pipe and ceramic fiber in the middle.
I hav built at least 3 rocket stoves attempting to get a j tube to no success. I always end up removing the end of the J and using a L
https://youtube.com/shorts/L7KsN0M50JY?si=cexI06NKz4Np2U9y