LONDINIUM replacing the safety valve
Lose Weight, Gain Volume: About Coffee Bean Density in Artisan
Roasting coffee beans, you want to be as consistent as you can, replicating a successful roast while collecting enough data (besides what you see, feel, smell and taste from the coffee) to get an idea what you may be doing wrong if the results are not so good all of a sudden. The Artisan software for coffee roasters has a feature to help you keep track of volume and density of your beans. Density is a word for the weight of a certain volume of beans and it can be measured in grams per liter. Your green beans are obviously more dense than the roasted beans: roasted beans have grown a lot in size and they have lost weight (moisture) in the process. In his new book “ The Coffee Roaster’s Companion ”, the famous Scott Rao explains these things: “Ideally, water should account for 10.5%-11.5% of green-coffee weight.” (p.3) “Coffee loses 12-24% of its weight during roasting, depending on initial moisture content, roast degree and inner-bean development during roasting. T...
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Have you thought about what a good comprehensive toolkit should look like for someone wishing to carry out all the maintenance activities necessary on an LR/LR24? Forgive me if you’ve already posted one and I haven’t spotted it yet.
Bleeding air in a machine is one I’ll definitely be interested in, my 24 has developed a bit of air gurgle and it’s definitely on my to-do radar, but it’s getting pushed further down the list as more pressing problems around the house take priority.
air gurgle sounds odd -- have you pinpointed where it's from exactly, what detail of the machine produces it?
If it's the boiler 'singing' when heating up, this may be lime scale around the element and cleaning it may sort it.
Making sure your water is well processed so (hardly) no lime scale can build is a good way to prevent several problems.
Thankfully I do not have the boiler “singing” as you mention above, sometimes it’s really difficult to put precisely and concisely into words the gist of an issue. Air gurgle is perhaps too strong a term, but occasionally I get a liquid sound as the pump runs and tries to deliver its water pressure. I assumed it was a little air in the system. Perhaps it’s a function of the machine. The Rotary pump on my old LR was so much louder than this quieter pump, so hearing water circulating whilst the pump runs is a relatively new thing for me - it’s a learning curve.
Thank you for your response and look forward to your next video.
I’m glad I don’t have the boiler “singing” whilst heating up, though
sometimes it’s really difficult to precisely articulate the gist of an issue. Air gurgle is perhaps too strong a term, though occasionally I get a sound as the pump runs and tries to deliver its water. I assumed it was a little air in the system. Perhaps it’s a function of the machine. The Rotary pump on my LR was so much louder than this DC pump, so hearing water circulating whilst the pump runs is a relatively new thing - it’s all an interesting learning curve.
Thank you for your response and look forward to your next video.