Ben, Interesting. I'll read what the Schomer man has to say.
I have a Brewtus II so I can't affect the length of my preinfusion. There is a natural "ramp-up" in pressure due to the size of the grouphead, but that's all. The controlled preinfusion didn't come until later models – the IV I believe. On Tue, Sep 1, 2015 at 6:31 PM Benjamin McCafferty <[email protected]> wrote: > I'd look at David Schomer's thoughts on shot profiling--it's the one > variable that he feels is best left steady. > > But based on your thread title, I think what you're saying is to affect > pre-infusion by lowering pressure at the beginning to some low value, then > crank up to brew pressure, right? In other words, not shot profiling per > se. > > If it were me, I'd mess around with the basic pre-infusion that you > already have, simply by changing the length of time that you pre-infuse to > affect different outcomes. Since everyone's water pressure is different, > there's no set "right" time to do it, but you may find a level that works > for you. > > Best, > bmc > > Sent from my apple IIe > > On Sep 1, 2015, at 14:31, Jesse Livingston <[email protected]> > wrote: > > Hi all, > > I've been thinking through how one could implement a controlled > preinfusion on the Brewtus II. I've been admiring Graeme's post on all of > his fantastic mods but am considering another approach. > > What if there was some way to attach a lever to the OPV valve that was > reachable, allowing you to dynamically adjust the pressure as the shot was > brewing? I'm thinking of something that could hook into the OPV and latch > onto the adjustable part. Aside from the challenge of finding something > like that and modifying the casing to make it reachable somehow, would that > potentially do long term damage to the pump or OPV? I guess it's not meant > for constant adjustment, so just wondering whether this solution is > detrimental to the machine. > > Thoughts? > > Jesse > > -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/brewtus. > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/brewtus. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
