Custom espresso machine build - Page 4

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lennoncs (original poster)

#31: Post by lennoncs (original poster) »

Espresso_Monkey wrote:Please keep this thread alive...
not to worry,
I am just waiting on a custom fitting and fabricating a sight tube for the steam boiler.
i will post on that progress soon.

Sean
Sean Lennon
Davisburg Mi.

LMWDP #086

Gregg K

#32: Post by Gregg K »

Great project!

The kind of thing that gets me anxious to watch progress.

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lennoncs (original poster)

#33: Post by lennoncs (original poster) »

Pumps, Sensors, Controllers....Oh My

Well, Not that bad really
but the pile is building.
We have a
Flow-meter (30 pulses per ml)
low speed gear-pump for general water fill(more on that later)
high pressure transducer for brew pressure control
low pressure transducer for steam
Fluid-o-tech gear pump for brew
thermocouples for brew temp and steam boiler backup temp control
Dual channel PID motor controller for the pump motors
Main controller for general IO logic, user interface and pressure profile generation.

missing are
high voltage isolation for the valve coils
balance for shot scale.
gear pump motor.

The gear pump to the left of side of the photo (with the coupling) is a 3ml per rev unit that I will be experimenting with. the main advantage of the unit is very low operating speeds which means very quiet operation. The main challenge is seeing how controllable it will be....we will see.


Sean Lennon
Davisburg Mi.

LMWDP #086

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TomC
Team HB

#34: Post by TomC »

This has been by far my favorite thread on HB since it started.

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Chert
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#35: Post by Chert »

lennoncs wrote:Pumps, Sensors, Controllers....Oh My

Well, Not that bad really
but the pile is building.

Are all those new parts for your custom build? Or some from the Synesso? (Also highly enthused, just not as much as TomC (Tom, can you dismantle and rebuild a Puritan Bennet? Watching this thread, one might learn)
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TomC
Team HB

#36: Post by TomC »

Chert wrote: (Tom, can you dismantle and rebuild a Puritan Bennet? Watching this thread, one might learn)
I only focus on the patient side of the circuit :)

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craigcharity

#37: Post by craigcharity »

I bow in submission :) It is both inspiring and bloody marvelous to watch this. Keep up the good work. I will send you my address to you if you want to send it to get tested for a year or 10 :)

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lennoncs (original poster)

#38: Post by lennoncs (original poster) »

Chert wrote:Are all those new parts for your custom build? Or some from the Synesso?
Hi,
All new,

The only donor parts from the Synesso are the boilers.

Cheers,
Sean
Sean Lennon
Davisburg Mi.

LMWDP #086

lennoncs (original poster)

#39: Post by lennoncs (original poster) »

Hi all,
This is where things start to get interesting...

I have finished the new "fitting" I mentioned before.
location is sandwiched between the 3-way valve and the flange under the grouphead.
MANY parts removed for clarity :lol:


Servo brew orifice to assist in flow profiling.
Servo mix valve for temperature profiling(missing, but on the right side, identical to the left valve)
The lines are for sense and feedwater.

control motors will be installed later in the build.

You will have to bear with my pace.
This time of the year I am cross country skiing as much as possible
AND
with the exception of the boilers and things like pumps and tube fittings, everything on this machine is built by yours truly, who also has a "honey-do list to maintain"

Cheers,
sean
Sean Lennon
Davisburg Mi.

LMWDP #086

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Chert
Supporter ♡

#40: Post by Chert »

lennoncs wrote: This is where things start to get interesting... You will have to bear with my pace.
Enjoy the skiing and honeydos but keep us posted!

'bearing with your pace' on the edge of my seat,

Flint
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