The thumper is still a pot still, so you still need to find the 'sweet spot' power level. The effect is that the tails are also compressed so you get a bigger hearts phase. Most of the volatiles produced by the thumper now, are being boiled off from the volatiles that remain in the thumper charge. This is now directly heating the thumper charge. It is producing a vapour with a very low ABV, and can be considered to be steam. Your primary boiler charge is now alcohol depleted. The two boilers in combination are behaving just like a normal pot still, only a slightly more efficient one. The vapour produced by your primary boiler is constantly changing, as is the vapour produced by the thumper. Things continue this way through most of the run. The thumper tends to hold back the lighter higher boiling point, components so it compresses the heads cuts. It will have a different composition and a higher ABV. That vapour is very different from the vapour produced by the primary boiler AT THAT MOMENT IN TIME. The end result is a vapour produced by the thumper. So the vapour released from the thumper charge, mixes with the vapour from the boiler (that just sneaked through the thumper charge). That means the two vapour streams ALSO have different compositions. Importantly the composition of the liquid in the thumper is different to the composition of the liquid in the primary boiler. Some of this is from agitation by the vapour bubbling through it, and some is from the thumper charge actually boiling. The thumper charge has heated up enough that it actually starts to produce its own vapour. So some of the vapour from the boiler gets through the thumper - but the composition has changed - it contains more of the lower boiling point headsy components. NONE of them do anything absolute, there is no 100% condensation, just tendencies. Some others are likely to get through the liquid. Some of them are going to tend to condense into liquid because their boiling point is still higher than the liquid temperature. Your boiler is producing a mixture of volatile vapours, these now hit a hot liquid. It is most likely a lot quieter, expecially if your vapour injector has been modified to include a diffuser to make smaller bubbles. Your boiler is now warmed up and contains a higher volume of charge. This is caused by the violently collapsing bubbles. The temperature also increases, because the condensing vapour releases energy. The volume of the thumper charge increases. Result is that virtually all of these vapours will condense into the thumper charge. These all have a boiling point higher than the temperature of the thumper charge. This is a mixture of different volatiles determined by the contents of the boiler charge. Your primary boiler starts producing vapour. Add enough plain water to the thumper to cover the end of the vapour injector. You really do need to think about what a thumper does in phases, because it actually does different things at different points in the run. Naturally what actually occurs, happens in phases, and is 'not quite so simple' as stated just above. Yes, a thumper is a true parasitic boiler, and it is heated by the primary boiler. Simply put there is a mass and energy transfer out of the primary boiler and into the secondary boiler - the thumper. Lets also leave what you put into the thumper to start with to later. Either to increase, or to decrease the flavour, but we can get to that later. The real purpose often tends to be flavour modification. Sorry folks but it just isn't acurate.Īdmitedly they will do that, but in many cases it is incidental. Its just that this seems to have been latched onto as the main reason for using one. If you are unsure of what kind of still you want to make, contact us and we will help you out the best we can.OK lets open a discussion by throwing in a hand grenade.ĭespite what you may have heard previously, many thumpers are not actually used to increase the ABV of the product. We will soon have online videos that will show you how to build a moonshine still using readily available parts. Most folks that are starting out want to do it cheaply, so they use a beer keg or another easy to find vessel that can be used as a boiler. They include everything you need except for a boiler. All the parts are precut and ready for assembly. In the meantime, we have DIY kits for several different stills. We will soon have plans to build a moonshine still available. ![]() If your build is simple or complex, we can help you get the right parts for your project. Today we have a multitude of designs including reflux and fractionating columns, flute columns and many variations of those. It started with a simple pot still that has 4 components: the fire, the pot, the condenser and something to collect it in. Moonshine has been around for a long time and there are many types of stills today as the designs have evolved over time.
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