Alright, after some thinking, and experimenting, I balled down the issues to dryness, inhalation speed, way of loading the bowl, stirring, temperature used, and the amount of puffs or bags.
1-When you use dry herb, it will pull moisture from your mouth, and respiratory system. Some of the substances in the herb are hygroscopic which means they grab moisture from their environment, so add this the fact that you are inhaling dry air, and you can see how this can cause problems. Just taking in room temperature air can dry your mouth, and throat out, so you know dry warm air, with moisture love substances will do it even more. This is why using some boveda packs in your herb storage is needed, as it will prevent dryness, as well as keeping everything cool when the moistened vapor hits the water because water will cool the steam much quicker then it would cool dry air.
2-The inhalation speed is important because the slower you go, the more time the hot air can stay in contact with the herb and extract as much as it can, in a quicker time. Going fast will just dilute more air to the vapor meaning more puffs to get the thc extracted.
3-The way you load a bowl is important because when you load with chunks into the bowl, some parts will be more cooler then others meaning less extraction, and a waste of bud. Also, if you load too much, even if it's ground & evenly distributed, you will cool down the plant fibers in the middle of the herb too much meaning you need longer time to inhale to extract a good amount of the actives to get the most out of your herb.
4-Stirring is needed to get the remaining bits out being that air is light, and only goes where there is less restriction, or else it will cool off, giving us less extraction meaning more puffs.
5- Using a proper temperature is important to extract what you want efficiently. In the case of thc, it has been shown to start boiling efficiently as 392f, but the higher you go the more released, which means less puffs. If you go lower you can still get some thc, but you will have to do a lot of inhales. The taste will be gone by the time you get to this temperature if you start low, then go high, or the taste will be gone if you inhale at a speed that is faster then need which will cause you to take multiple inhales, and take away the flavor, leaving you with a taste that is not good causing you to stop extracting the rest of the thc.
6-When you use a temperature of 392f or higher, you will need less puffs then you would if you started low to get the best effects. For instance, if I start at 410f, 1-2 puffs maximum, is all I need to extract most of the thc if I inhale at a nice slow, & steady rate, due to the hot air being at the a good temperature to cause the thc to boil damn near all of the thc off of the herb. The taste won't be a problem neither, because being that I inhaled everything at once, the good flavors will be inhaled along with the cannabinoids(thc,cbd,cbn), so upon exhale the good flavors will max the bad flavors. Once you add the boveda and water pipe, everything will be cool, and moist, enough to provide a nice effect that is better then smoking to me, and will convert damn near any smoker who loves the effects of smoking more then the ritual.
For those who use bag vaporizers, specifically the volcano, it has been shown that six bags is necessary if you use a temperature setting of 396f or 7 on the knob, to extract most of the cannabinoids(thc,cbd.cbn). If you go to setting 8 or 417f then three bags are needed. Since you need more puffs with a bag vaporizer, then whips, you should load just a very small amount of fresh herb for each heat up of the bags. This will help keep the flavor from being too bad.
Have fun.
I honestly don't think the heat is the issue. I think it is the dryness of vapor which is an oxymoron now that I think of it. My vapor is cooled either by longer air path, slower draw or lower temps. I have used NF vapor lung which is the same as that link in essence and I saw no difference and in that case the vapor sat in the lung first so it was cooled not unlike a bag vape. I will try your suggestion of water again but I doubt I will see a difference in my application. We will see. When I did do it I actually did it with the DV.
The vapor lung just cools the vapor down by letting it come into contact with fresh air, and the chamber holding the vapor being cool, it doesn't add moisture to it. The bukket bong uses a damp cloth to cool down the smoke, which will also add some moisture to the substances that dry out your respiratory system, and mouth.
For now what you can do is put a piece of organic cotton balls in the path of your mouthpiece, and if you feel the need, just sprinkle a SMALL amount of water onto it so it can help with irritation. Be careful to not put too much onto the cotton, because it will become condensed and hard for air to pass through it. Just a SMALL SPRINKLE is enough. Cotton already has some moisture in, so you might not need to add anymore.
These are good:
http://www.rawthentic.com/filters.html
http://femininecare.mercola.com/organic-cotton.aspx
mod note: Back-to-back posts, merged. How many times do you need to be reminded to use Edit?
