typical temperatures inside rocket mass heater

kees ijpelaar wrote:I did test the rocket with wood, it did blow back, and was not without smell.

I did test it without a shimney so I think I do need really a shimney to let it
word properly, wind blows into the connection now.

is this the problem with smoke is visible.

https://youtu.be/GIhaeVGO5pA

regards

Hi Kees,

Although the stove will operate without a chimney, it will definitely improve with one. Smoke and smell will go away and the fire should blaze much stronger with the added draft.
Side note: If you were to remove the barrel covering the heat riser, the same thing would happen. This proves that its not the stove core that's burning inefficiently, but rather the change in direction of the exhaust that put friction on the gas flow and slowing the combustion to not achieve clean burning rocket speeds.  

5 months ago, you said and it appeared you had it working well? Now you say or think it is not?