I've been meaning to ask, is Dan's technique based on the new or old Silvia machines, I can't recall it being mentioned anywhere? (apologies if I missed it). Mine is a 2006 machine.
I've seen recommendations of 0 (Jim Schulman), 30, 32, 35, 40, 45, 50, 60 and 120 (Dan) second reverse surfs. I was reccommended to try 30 seconds instead of 2 minutes, but didn't notice much difference. Without knowing at which point the temperature peaks it's all guesswork anyway*
After nearly 5 months of owning this machine I also completely agree with cannonfodder - using that technique with my setup just doesn't make good coffee.
It is true there are enormous amounts of info out there on Silvia - too much really. You can spend hours reading alt.coffee, coffeegeek, and here and still just have a stack of differing opinions. Maybe it is time for someone to write up a Silvia 'Redux' - bring together and update all of the perceived wisdom on this machine, separate the wheat from the chaff and post it somewhere you just can't miss it.
* I will get a PID eventually
