« on: January 28, 2016, 06:52:41 PM »
Not sure why you think dumping the trub will speed up fermentation time because it won't. The main advantage is harvesting yeast, as the others have said. But it makes it a little easier to get clear beer too, assuming your conical has a racking arm. I wouldn't get one without. After you dump, harvest yeast you will crash cool, then fine, and is you fine properly most all of your yeast will fall into the cone. You can then position the arm to rack off clear beer. You should be able to rack crystal clear (or near crystal clear) beer over to kegs. Course you can do that with any other fermentor this just makes it easier.
Also, you can dry hop or add spices without worrying with yeast on the bottom. While I do think they are convenient its hard to justify the cost unless you just have the extra money and want to spend it.
BTW MoreBeer has 15 gallon conicals for sale right now at a very good price.