G-son

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About G-son

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  1. Those T:s on the burners seem to have the same size openings all around, if I remember correctly the recommendation is to have the two inlets one size larger than the mixing tube. Also, with the burners close together and two T openings turned towards each other they may affect air flow into the other burner. I'd turn them something like 90 degrees - don't know if it'll make a difference, but it's generally a good idea to keep it clear around most kinds of air inlets if you want good flow.
  2. G-son

    Burners 101

    A hybrid burner?
  3. T burner thread: Burners 101 thread: That should keep you busy reading until tomorrow.
  4. Have you read the "Burners 101" thread? I know it's crazy long and the information is spread out all over it, but there's great info about the basics of burners in there. I've read it several times, and I still learn something new when I dive in.
  5. Here in Sweden we have what I think is called value added tax in english. Prices on display for "regular people" ALWAYS has the VAT included, so they know exactly what they have to pay. Companies that sell to other businesses often show prices without VAT - the buying business still has to pay the VAT, but in general they get it back (and add VAT on the price they sell it on for). It might be because I am used to it, but I think prices should always be clear what you will actually pay.
  6. Based on the square head bolt & square nut I'd agree it's probably pre WW2, assuming the "hinge bolt" and nut is original.
  7. It is a pressure regulator, it regulates the pressure to a specific level - no matter if it feeds one or 10 burners, as long as it can keep up with the gas demand the pressure fed to the burner(s) will be the same. If it was a simple restricting valve it could work as you say with more burners meaning less pressure (at the same valve adjustment), but the regulator is built to give a constant pressure, regardless of how much gas is used. Again, until you exceed its capacity. If I recall, the benefit of multiple small burners instead of one large is that you can get more even heat in the forge, and the smaller burner flames are shorter and slow down quicker, meaning you get to keep more of the heat inside the forge. Ribbon burners with lots of small flames takes the same concept further.
  8. In theory… If you add extra layers of insulation just to reduce the internal size, those outer layers of insulation should never see the very high internal temperatures, so I'm guessing a cheaper, lower temperature insulation could be used there.
  9. I believe that relates to how the steel was made, not that the actual axe is a casting. In itself it doesn't seem to confirm or deny that the axe is a welded or monosteel item - everybody in history has bragged about the best properties of the items they sell, I have so far not seen anyone try to sell cutting tools saying "we make them with the best steel for the cutting edge and the cheapest stuff we can get away with for the rest". You mention the good stuff, you don't mention the rest... Either way, a simple spark test should give you a good idea if you've got high carbon steel or not. Take it to the grinder and the sparks will let you know.
  10. All right, thanks. It seems that adjustable jet position would be a nice addition to most/all(?) types of burners - but perhaps not always worth the extra work, if you're just going to tune it once and then leave it alone.
  11. Many axes (and other cutting tools) have mainly been made of cheaper low carbon steel, with just a small piece of high carbon steel forge welded in for the cutting edge. You may have an axe that has been used and sharpened so much the edge steel is gone, and what remains will not take a heat treat. A new piece of suitable steel can be forge welded to it in that case, used to be a common repair.
  12. This is a matter of getting the end of the gas jet in the right place in the burner to get the correct air flow, right? A different construction where the gas jet can be moved in/out could be used for the same result, or am I understanding the function wrong?
  13. G-son

    Forges 101

    Was this perhaps supposed to go in the "Burners 101" rather than "Forges 101"? Anyway, as you say, a smaller burner may require more time to build to the required precision, material costs only go down a little (from using smaller/shorter pieces), and you still need to do the same number of machining operations, setting the pieces in the mill/lathe etc. the same number of times as when making a larger burner. As usual the big cost is the time spent, not the materials.
  14. Had to search for the atlas burner to find info, didn't know about it. Appears to be an extremely simple design, and while I like simple things it's rarely the way to go if you want high efficiency. What you save on a simple burner may cost you a lot in gas consumption further down the road.
  15. G-son

    Burners 101

    Would perhaps make more sense to talk about angles than diameter to length ratios.