I realize that now--I meant where you said "Brian". We officially have achieved 
the internet phenomenon of three separate conversations going about the same 
topic with the same people. :)
best,
bmc
Sent from my apple IIe

> On Sep 1, 2015, at 16:29, Jesse Livingston <[email protected]> wrote:
> 
> Ben – I was responding to Ira's comment ;)
> 
>> On Tue, Sep 1, 2015 at 7:28 PM Benjamin McCafferty <[email protected]> wrote:
>> No worries. It's Ben by the way. :)
>> The small spout gets used if you install a rotary pump and plumb in the 
>> machine. Overflow goes through it into the drip tray. Otherwise it just sits 
>> and looks cool. 
>> 
>> Best, bmc
>> Sent from my apple IIe
>> 
>>> On Sep 1, 2015, at 16:10, Jesse Livingston <[email protected]> 
>>> wrote:
>>> 
>>> Ah OK. Makes sense. I'll give that a try.
>>> 
>>> But while I have your attention, Brian, I noticed something strange. As I 
>>> was looking under the hood, the little spout behind the the E61 group 
>>> (pictures attached) has no tubes going to it. It's just.... there. My 
>>> impression was that excess water from the brew boiler (redirected from the 
>>> OPV( is supposed to go through to there. What's wrong with my tubing?
>>> 
>>>> On Tue, Sep 1, 2015 at 6:55 PM Benjamin McCafferty <[email protected]> 
>>>> wrote:
>>>> That's what I meant essentially--the first position on the lever on your 
>>>> B2 allows water to flow at line pressure, i.e. no pump, and you can get a 
>>>> decent wetting of the puck from that without blasting it with 9 bar over a 
>>>> few seconds. And you can indeed control the length by letting water flow 
>>>> for a certain number of seconds, then dropping the lever again if you wish 
>>>> to allow some amount of time to let water absorb. I know it's rudimentary, 
>>>> but like many variables, you'd be surprised how consistent you can be 
>>>> without a ton of fancy tools.  :)  You can also adjust on the fly as 
>>>> weather changes, etc. if things seem to be going wrong. 
>>>> 
>>>> Give it a shot (yuk yuk), you might be pleasantly surprised. 
>>>> 
>>>> Best,
>>>> bmc
>>>> 
>>>> Sent from my apple IIe
>>>> 
>>>>> On Sep 1, 2015, at 15:44, Jesse Livingston <[email protected]> 
>>>>> wrote:
>>>>> 
>>>>> 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
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>> 
>>> <IMG_0282.JPG>
>>> <IMG_0287.JPG>
>>> <IMG_0285.JPG>
>>> <IMG_0283.JPG>
>> 
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