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.
