After trying to get this version up and running well and never seeing the results I was expecting I gave it one last chance. I did finally get some blue flames (that would not show up on film), but never got flames shooting out the top of the heat riser. So I tore it down for inspection and clean-out.
As you can see it is nothing fancy but it is holding up for the most part. But do take in to consideration that this thing is only a couple of weeks old and has seen less than 24 hours of burn time.
Well I put it back together and fired it up one last time.
Again it took a while to go smoke free and even though I got the well shaped ram horns I never saw flames from the top of the riser and I could hold my hand less than 2 feet over the heat riser without getting uncomfortable.
My conclusion is even though it was neat to manipulate the flames into the shape I wanted it never did really perform well. Not only was it hard to get to light and come up to speed but I never got real clean burns, always had lots of ash left over and never saw flames shooting from the heat riser like my first single cyclone offset riser would do.