Burra Maluca wrote:I've embedded that video for you.
allen lumley wrote:Colon S. If past experience AND the 2nd edition of Ianto Evans 2nd eddition of Rocket mass heaters is to be believed, with the minimum spacing of 1.5''
between the top of the Heat Riser and The Inside top of the barrel for a 6''RMH system, And 2.0'' for the minimum spacing of the gap between the top of
the Heat Riser and the inside top of the Barrel -If the barrel is off set the narrowed side is always cooler and the wide side is always hotter !
I have some experience with 3 RMHs built to that pattern, and they do often appear to follow this rule! this is common to all 3 RMHs constructed with
minimum gaps between the H.R.s and the barrel !
I have zero experience with a larger H.R. to Barrel gap, but there is still a frequent referral to anecdotal evidence of a reversal in the heat patterns when a
Larger H.R. to Barrel gap AND an off-set barrel to H.R. placement are both used, your explanation of the greater area given to gas flow through the
transitional area is a fair description of what we are seeing, it does NOT address the basic issue, whether or not off-setting of the barrel continues to affect
the hot gases flow, and how it does so ! for the Good of the Crafts! Big AL.