nonbeliever
Well-Known Member
Lots can be done in the tube!!!
@nonbeliever
Nice idea with the stepped ID's. I like the narrowing effect of the glass lined tubes. I've been thinking about narrowing the ID to do away with the need for glass, never thought about a baffle. What is the depth of the 8 mm hole? How exactly did you create that baffle? Really excited to try this out.
I had @Alan make me two roasting tubes... 1 - 2 1/2” and 1 - 3”.
He tapered the mouthpiece end to address the 8mm step. Here are the two 8mm and one of the original tubes I got with my classic.
For the bowl end, the very edge is a 5mm deep x 14mm step. The 12mm step is 25mm deep. There is a beveled transition between the 12 mm and 8mm step. The 8mm hole extends the rest of the mouthpiece length. Here is a drawing:
For the baffles, I now have two.
One is the “star shape” which I made by folding a piece of 62mm x 15mm SS foil like an accordion, then unfolding it into a star shape (think a paper thanksgiving decoration that lies flat, and then becomes 3D when you unfold it). I then bent one end of each fin to give me some deflection of the airflow and make it circulate.
I also now sliced up a same size piece of Foil to give me “slivers” connected at both ends, which I then balled up and pushed into the 12mm step. Both of them are working, we’ll see how they work over the next week or two.
It might also be interesting to make the 12 mm step even deeper (30 or so mm) and load it with a few 10 mm or odd shaped glass beads - I’m looking to see if I can find some I can use in the 25 mm step to test. I think anything smaller will either block the air path or get sucked up when taking a hit.
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