I agree with Ben but I'd like to relay a recent experience with brew pressure. My shots started spewing all over the place and having ruled out distribution and tamp I assumed it was due to excessive brew pressure. I broke down and bought a portafilter pressure gauge and it showed that my brew pressure was actually way too low. This conflicted with the reading on my Brewtus's built-in gauge which read 2.5 bars higher. So I decided to trust the portafilter gauge and tightened the OPV. The spraying went away and my shots improved dramatically in every way. This was counter-intuitive to me but I can't argue with success.
On May 13, 2011, at 7:03 AM, Ben McCafferty wrote: > I've also had good luck with an infrared thermometer ($30, radio shack) since > it reads as the water emerges and before it falls through the air. > > Squirting, however, doesn't have much to do with temp > On my experience. It's bad dose/distribution, and/or excessive brew pressure. > Look up the Weiss technique, it helps a ton. > > best, > bmc > > Sent from my C-Dory > > On May 13, 2011, at 6:44, Kitt Johnson <[email protected]> wrote: > >> No Steve, it isn't a very good way to check an absolute temperature (vs. a >> relative one that was derived the same way. You want to measure the water >> as it emerges from the group head. Short of $300+ of equipment (Fluke 52 >> and a Scace), your best (imperfect) bet is to get a decent cooking >> thermometer and some thick Styrofoam cups. Stab the thermo through the >> upper lip of the cup so it extends half way across the cup. This will >> position the probe directly into the falling water from the group at about >> the same height as the face of the puck. Then run water across the probe. >> >> This technique will still lose some heat (~2 - 4 F), but less than any thing >> else you can do cheaply. You can test it with boiling water. (Also, be >> sure to calibrate the cooking thermometer by holding it in boiling water.) >> >> -----Original Message----- From: StevieG. >> Sent: Friday, May 13, 2011 8:55 AM >> To: Brewtus >> Subject: Re: One more time - with feeling... >> >> >> Hi folks - I have recently been bedeviled with the squirts, and am >> working on my setup again. I generally use CC Toscano, but can't seem >> to pull a good shot lately. This morning, I verified that a 7.7 >> second run on my Macap doserless produces the CC recommended 19.5 >> grams into a double basket. >> >> Next, I want to get to 198 degrees - I had my heat set at 95C, and ran >> some hot water from the group head into a heated Bodum double wall >> glass and measured the water temp with an instant read thermometer. >> It was around 184F, much lower than a straight conversion of 203F >> should have been. >> >> Is this a valid way to measure brew water temp, or should I be going >> about this differently? >> >> Thanks much for comments! >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Brewtus" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/brewtus?hl=en. >> >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 10.0.1375 / Virus Database: 1500/3633 - Release Date: 05/12/11 >> -- >> You received this message because you are subscribed to the Google Groups >> "Brewtus" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/brewtus?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/brewtus?hl=en. > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/brewtus?hl=en.
