I noticed it is not as thick too. I like the thickness so will dial it up some. Wonder what people see are the pro's of lower pressure. In Schomer's book he recommends 8.2 but seems not as good to me.
On Feb 8, 4:42 pm, Chris Bailey <[email protected]> wrote: > I grind based on the speed and volume the shot produces. There are numbers > on my grinder's (Macap) dial, but I think they're just there if for some > reason you use it for more than espresso and need a way to get back into the > ballpark in case you used it for press or something way different, dunno). > I may just need to experiment, or others can comment, and I know this > aspect isn't always intuitive, but I feel like if I drop the pressure more, > I'm not getting the thickness in the espresso - as I mentioned, it's thinner > coming out of the PF and blonds out sooner, although I can adjust the grind > and such to fix the early blonding, I can't usually counter the thinner > density of the espresso/fluid coming out. > > On Sun, Feb 8, 2009 at 8:01 AM, Josh Heisler <[email protected]> wrote: > > > I dialed mine back to 9 and comes out at 8.2 on the shot. I realize I > > don't have to grind as fine as I once did. I wonder if this is > > positive? For my Vivace roast I was grinding at close to 1 on the > > dial. That seemed a bit fine so maybe this is better? But you have it > > higher. I guess it is something to experiment with. I've yet to really > > read anyway in a way that makes sense why this is an important > > variable. > > > Josh > > > On Feb 8, 2:41 am, Chris Bailey <[email protected]> wrote: > > > I'm not sure yet. I can't say there's a noticeable improvement honestly. > > I > > > see about 9.5 bar when pulling a shot (with the blind PF at 10). So far, > > it > > > seems like the shots blond out sooner, and that I don't get as thick a > > > head/build up coming out of the PF. I've been planning to dial it back > > up a > > > bit and compare again, but am on vacation and haven't tried that yet. > > > > On Sat, Feb 7, 2009 at 9:32 AM, Josh Heisler <[email protected]> > > wrote: > > > > > Chris, > > > > Now that you have dialed it down to 10 bar with the blind PF would you > > > > say the shots have improved? If so how so? > > > > > Josh > > > > > On Jan 30, 1:00 pm, Chris Bailey <[email protected]> wrote: > > > > > I don't believe I got a PF pressure gauge with my machine, but maybe > > I'll > > > > > check in on that. I have mine now set to 10 bar with the blind PF, > > and > > > > it > > > > > seems to indicate about 9.5 bar when pulling shots. Having another > > > > gauge, > > > > > as long as it's relatively accurate, would be another data point. > > Does > > > > > anyone sell a complete pressure gauge solution that works for the > > BII? > > > > I've > > > > > seen people building them, but haven't found one I can just buy. I > > can > > > > > build one, but, um, am not really motivated to do so if I can find > > one to > > > > > purchase. > > > > > > On Thu, Jan 29, 2009 at 8:53 AM, <[email protected]> wrote: > > > > > > I might add that when I did my investigation of the pressure gauge > > > > > > mounted on my Brewtus II, I found that the portafilter pressure > > gauge > > > > which > > > > > > was sent to me by WLL when I first bought the machine was accurate > > when > > > > > > compared to my expensive test gauge. It was the pressure gauge > > mounted > > > > on > > > > > > the machine that was 2 bar too high. > > > > > > > Allen > > > > > > > *From:* Chris Bailey <[email protected]> > > > > > > *Sent:* Thursday, January 29, 2009 7:33 AM > > > > > > *To:* [email protected] > > > > > > *Subject:* Re: Adjusting pressure > > > > > > > Ok, thanks Todd, good to know. I will dial it down a bit. Yes, > > 11.5 > > > > bar > > > > > > when with blind, and more like 10 I think when brewing, which is > > > > consistent > > > > > > with what you mentioned. I'll try it out with my next shot and see > > how > > > > it > > > > > > goes. > > > > > > > On Thu, Jan 29, 2009 at 8:25 AM, Todd Salzman < > > > > [email protected]>wrote: > > > > > > >> Hi guys, I don't think I said that the gauge does not read > > correctly. > > > > I > > > > > >> was just trying to say that with a blind filter basket we set them > > at > > > > 10 > > > > > >> bar. This means that when you brew with a proper grind and coffee > > at > > > > > >> about 2oz in 25 seconds the brew pressure should read around 8.5 > > on > > > > the > > > > > >> gauge. This means the other 1 to 1.5 bar of pressure is being > > > > diverted > > > > > >> to the reservoir from the OPV, so that the gauge is actually > > reading > > > > the > > > > > >> brew pressure accuratly. > > > > > > >> When we do our set up on the machine we actually don't use a blind > > > > basket, > > > > > >> we use a portafilter with a gauge and the pressures are always > > very > > > > close. > > > > > > >> If you are at 11.5 with a blind portafilter you are to high put > > the > > > > blind > > > > > >> basket in and dial it back to 10 bar. This is a good starting > > point. > > > > > > >> Todd > > > > > > >> Whole Latte Love > > > > > > >> This was one of my worries, was that the pressure gauge wasn't > > > > accurate, > > > > > >> and then as per Todd's note that what the gauge reads isn't > > > > necessarily what > > > > > >> the actual pressure is. That is pretty poor in my opinion - why > > > > bother > > > > > >> putting a gauge on there if it's going to be wrong. But, alas, > > that's > > > > what > > > > > >> we have. This is one reason I'm nervous to monkey with it, as > > it's > > > > hard to > > > > > >> say whether it's really wrong or not, it just surprised me that > > mine > > > > > >> consistently reads 11 bar (with blind PF or when pulling shots). > > I'll > > > > > >> verify that in a few minutes, but pretty sure. > > > > > >> I'm grinding, tamping, etc. as per standards AFAIK: 30lb tamp, > > > > grounds > > > > > >> typically around 15g in the double basket, grind setting such that > > my > > > > shots > > > > > >> are typically in the 25-30 second range from the time I pull the > > lever > > > > to > > > > > >> when I've filled a cup approx 1.5oz by volume (I mostly pull shots > > by > > > > where > > > > > >> it fills to on my cups, but have measured this and it's right > > about > > > > 1.5oz). > > > > > >> I've read a fair bit, practiced a ton, use only fresh beans (3 to > > > > maybe at > > > > > >> most 9 days after roast date), grind on a nice Macap grinder, etc. > > > > I've had > > > > > >> a friend who's pulled a ton of shots use my machine as well. > > > > > > >> On Wed, Jan 28, 2009 at 7:05 PM, <[email protected]> wrote: > > > > > > >>> Also be aware that the pressure gauge on the Brewtus II can be > > > > wrong. I > > > > > >>> went to considerable effort and expense to more or less establish > > (to > > > > the > > > > > >>> degree that the large pressure gauge that I bought is accurate. > > It > > > > was sold > > > > > >>> with the statement that it has an accuracy of 1%) that the > > pressure > > > > gauge on > > > > > >>> my machine is two bar off. I wrote about this at the time on this > > > > group, so > > > > > >>> you might be able to find it with a search. > > > > > > >>> Allen > > > > > > >>> *From:* Chris Bailey > > > > > >>> *Sent:* Wednesday, January 28, 2009 4:56 PM > > > > > >>> *To:* [email protected] > > > > > >>> *Subject:* Re: Adjusting pressure > > > > > > >>> My screw looks like it's metal, and is located on the front of > > the > > > > > >>> machine, lower right corner, once you've removed the drip tray. > > > > Sound > > > > > >>> right? I do tamp to 30lbs. I'll use the blind PF to set the > > > > pressure, > > > > > >>> thanks for that info! > > > > > > >>> On Wed, Jan 28, 2009 at 5:46 PM, BinBakinBeans < > > > > > >>> [email protected]> wrote: > > > > > > >>>> Which version of Brewtus? > > > > > >>>> The first had a teflon screw on the opv valve that became > > > > problematic > > > > > >>>> after adjusting the pressure. > > > > > >>>> The first of the BII had teflon as well. They were later > > switched to > > > > > >>>> an opv with a brass adjusting screw. I replaced mine with one of > > > > these > > > > > >>>> after I had problems with my original teflon screw opv on my > > BII. > > > > > >>>> Strangely enough, Expobar has again gone back to using an opv > > with > > > > a > > > > > >>>> teflon screw on the new BIII machines. > > > > > >>>> I would say go ahead and adjust it, especially if it is a brass > > > > > >>>> screw. If it is teflon, be prepared to "possibly" have some > > future > > > > > >>>> problems with it. Not a big deal to change it out if you do. > > > > > >>>> Use the blind filter in the portafilter to get it down to about > > 8.5 > > > > to > > > > > >>>> 9 on the guage. > > > > > >>>> Check again when you actually pull a shot that it is around 8.5. > > I > > > > > >>>> will assume that you will have properly tamped to about 30 > > pounds. > > > > > > >>>> On Jan 25, 12:27 pm, Chris Bailey <[email protected]> > > wrote: > > > > > >>>> > I've seen a fair bit of talk on the list about adjusting > > pressure. > > > > > >>>> Given > > > > > >>>> > the fact that there's tape over the pressure adjust screw on > > my > > > > > >>>> machine, and > > > > > >>>> > all the warnings about don't touch it, only let the factory do > > it, > > > > > >>>> etc, > > > > > >>>> > etc., I'm leery of messing with it. Also, my understanding is > > > > that > > > > > >>>> > supposedly the factory has pulled shots and checked the > > pressure > > > > and > > > > > >>>> set it > > > > > >>>> > properly. > > > > > >>>> > But, I've just wondered about it. My pressure gauge typically > > > > reads > > > > > >>>> about > > > > > >>>> > 11 bar when I'm pulling shots. I'm unclear on whether it's > > > > supposed > > > > > >>>> to read > > > > > >>>> > the true 8.5-9 bar that an espresso should be done at, or > > whether > > > > the > > > > > >>>> gauge > > > > > >>>> > is a pressure at a different point in the system and thus the > > real > > > > > >>>> pressure > > > > > >>>> > at the PF is lower, or not. > > > > > > >>>> > Can folks discuss this a bit? Other than taste, are there > > ways > > > > for me > > > > > >>>> to > > > > > >>>> > know whether my machine is set > > ... > > read more » --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
