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Satamax Antone

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since Sep 24, 2011
Southern alps, on the French side of the french /italian border 5000ft elevation
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Recent posts by Satamax Antone

Well, i used some reclaimed IFB, that sat outside for  a while, wet and all, no problem.

Mind you, i don't see much use for  IFB. They're no good in a firebox. As a backer for splits, they're ok. But  air entrained concrete can also be used. Ok, it cracks, but it's cheap. In this case, ok, the 1.5 dolls for wetted IFB, might be a game changer. You can use these bare in a heat riser, ok. Tho, may be not at the bottom. where the  ashes rake might hit these. And a five minute riser works as well.

These don't work for mass.

I like dry fit, not mortared fireboxes. And yes, these are handy as a backer and insulation in that case too.

For a forge or a kiln, thought, i could buy more.

That's where they would be the most useful for me.
2 weeks ago
Some chalk in the brick transformed into quicklime?  Doubtful. But hey, that could be an explanation!

Or it's hydrogen! Throw a match in there!

2 weeks ago
So, about a month ago or so, I did an experiment.

I have a metal lathe. And sometimes do heat and shrink assemblies. I had just discovered that the thermal camera on my phone goes up to 400c°.

So I shrunk the splined sleeve in the freezer.  Heated the sprocket in the oven.  And here is what it looks like.

The sprocket came out of the oven with a nice blued finish. Which is nice too.
2 weeks ago

thomas rubino wrote:
This same bell with an 8" J tube and 1 barrel ran flue gas temps of 250 + After it was warmed up.
I would hope a 7" batch can support one extra barrel over a J tube?

A 9" stove eh! Wow that's a big one.  Peter suggested to me that an 8" might be to large.

Thomas, The nine incher is my workshop thing. I heat 635 cubic meters approximately with it. Barely no insulation in the roof, 12cm of cork panels. Which is an euro R of 3, R17 in the us.  Hollow brick walls, R1 theoretically that's us R6, and loose strawbales leaned on the walls, that if these were stuck and plastered would give a US R of 34. But this is bare straw, for the moment.
If your 8 J was doing 250, the 7 incher batch should do the same at least. I have a fair bit more primary air than recommended, due to the altitude, 5000ft elevation.

Your seven incher should be able to cope with that extra barrel. I think, with a well running 7", you should be able to cope with a 8 m² or 9 m² total ISA. ( barrel and mass)

There is one thing i have noticed. I find your secondary port a smidge close to the port.
2 weeks ago

thomas rubino wrote:Hi All ;
Took the dragon out for a long flight this morning!  Five loads of fuel later... We were cruising!
My shop was warmer than it has ever been! Admittedly it was in the 40's outside.
Barrel temps of 320 on the lower and 465 on the upper.
Brick bell temps were 120  near the barrel and 90's down at the floor. Those numbers would have continued to rise had I kept burning.
Exhaust stack, gas temperature , checked with a T & G dragon breath monitor, reached 145 F at the end of the last load.That is significantly lower than I was getting before with a single barrel.
That temperature would also have continued to rise.
After  the last load went out. I fabricated a ceramic board plug to seal my primary air off when not burning. The secondary air just got a piece of cf board propped in front.
Both will help keep all that generated heat right there in my mass and not being sucked up the chimney.

Hi everybody.

Thomas, sorry to say, but i find your temps a smidge low. 145 F, that's really really low. That's the kind of temp i get after five minute burn, on a warm stove. Ok, mine is a 9 incher or so.

End of the load, i am at 240 F / 250 F, mid stream of the 8"x 8" chimney.

This is with 1.9 m² of radiating metal, and about 11 m² approximately of mass ISA (or is it total ISA? can't remember)

Usual temp for me just above the riser, 8" above and may be 8" off to the side is 370 C°,  5 cm inside the barrel.   So that's 700 F more or less at 6' above the workshop floor.

I think i could extract a bit more. But i don't think i will ever go down to 145 F too close to stalling temp imho. I already get smoke filled workshop every now and then,  with what i have. Usually in the spring or summer, on a cold and rainy day, when  the outside temp is rather close to inside temp, atmospheric pressure is low. and a stone cold stove.

My feeling, is that you have too much primary heat extraction with those two barrels.

2 weeks ago
Well, i have lived for four winters with a batch in my workshop. The flat being above.

It's perfectly doable. Mind you, it is not that simple. I have no door between the workshop and the lounge. So heat goes up, but dust also. The bathroom is sitting on the  bell pretty much.

I can hear the fire from the flat. So I rarely forget to reload. Tho, I have to overheat a smidge. To have the flywheel effect also.

I cook in it a lot too. On the plate, or the oven. So food smell goes up too. Not that good with grilled sardines.

Next step is to make another bell upstairs. And a bypass to help startups with the added bell.
1 month ago
Peter, in France, we used to have a "hache paille"

But far more basic, with just a board with a ledge, and with a sort of huge knife, with a hook at the end.

Just like this one, for example.

They used to recycle old scythe for this. Making the end into a sort of metal rod, and bending it to form a hook, which would in turn fit in a ring at the end of the board.

And a far more modern way!

Or even newer!

1 month ago
Thomas, if i may say. One barrel next to the other, is far more efficient at heating people. Rather than heating up the sky, with a tower of barrels.

Another way is something like this.

1 month ago