New victim for measuring piston pressure: the BOSCO group - Page 4

A haven dedicated to manual espresso machine aficionados.
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naked-portafilter (original poster)
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#31: Post by naked-portafilter (original poster) »

vberch wrote:You sir are a genius! Very impressive. Now, how about designing one for a Faema group?
That's just a model :-). Let's see if it works at all.

desmodici
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#32: Post by desmodici »

I saw this on the Londinium forum, I'm assuming this just measures the preinfusion pressure? (In the case of the Londinium R, the pressure at which the pressure switch shuts off the pump and subsequently the pressure that the water in the HX is "held" at)


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naked-portafilter (original poster)
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#33: Post by naked-portafilter (original poster) »

desmodici wrote:I saw this on the Londinium forum, I'm assuming this just measures the preinfusion pressure?

<image>
Yes, here the piston doesn't come into play.

We have the first parts :-).




Stanic
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#34: Post by Stanic »

Wow,looks great!

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naked-portafilter (original poster)
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#35: Post by naked-portafilter (original poster) »

Finish line ahead:








Paolo
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#36: Post by Paolo »

It is all looking great!

Can't wait to see the kit operating!

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naked-portafilter (original poster)
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#37: Post by naked-portafilter (original poster) replying to Paolo »

Here you are:

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Almico
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#38: Post by Almico »

Just wow!

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JohnB.
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#39: Post by JohnB. »

Since you are hitting just under 10 bar I'm guessing that you didn't remove the inner spring.
LMWDP 267

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naked-portafilter (original poster)
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#40: Post by naked-portafilter (original poster) »

Yes, this is the the profile of the two-spring version. I'll roast in the next two days. On Thursday I'll make the single spring version.

Backstage (the gauge can be assembled on the right side, and can be turned to the "customers" also) :