LM GS/3 Paddle Group Pressure Profiling

[BLrdFX]

Hello, I am thinking of upgrading to LM GS3 paddle from Bezerra Magica. I have read a few articles on internet regarding maintenance problem, installation especially regarding brewing pressure not correct set by the factory. Any advise to choose between AV and Paddle manual regarding Preinfusion procedure. I am pretty new on Espresso Machines , any advise and
cautions would be greatly appreciated. Thanks

The MP version will give you more options in being able to pressure profile your shot and especially if you do the Mod described by Bluecoin.

I have not done the Mod yet but have been chasing down when the machine was seemingly leaking/dumping water into the drip tray when it should not. It turns out that someone had or shipping had rotated the water level sensor about 45 degrees so the tip of the sensor was not detecting water until a much higher level was in the steam boiler. They also pulled the sensor probe very far out of the boiler. I fixed both with my fingers rotating and pushing it back into place and now it apparently works fine.

You can adjust the pump pressure pretty easily. It is easier to adjust the brew temp, the steam temp/pressure, all with the PID, and the tea water temp is adjustable without taking things apart as well; very nice machine.

The shot times are displayed and with the Mod that Bluecoin describes you can watch and adjust the brew pressure profile of the shot.

I recently bought a lever machine and the shots were fantastic, so I tried to get the GS/3 to duplicate that taste. After turning down the pump pressure I succeeded in producing the taste that you would expect from such a spendy machine.

The early machines were very different than the newer ones. If you are not interested in steamed milk products then get the ShotPuller by LM; it has no steam boiler.

[Haymarket]

Hello, I am thinking of upgrading to LM GS3 paddle from Bezerra Magica. I have read a few articles on internet regarding maintenance problem, installation especially regarding brewing pressure not correct set by the factory. Any advise to choose between AV and Paddle manual regarding Preinfusion procedure. I am pretty new on Espresso Machines , any advise and
cautions would be greatly appreciated. Thanks

[bluecoin]

hi micksquires

for MOD to Strada MP we just need only what you put on list or i have to buy other think?

A.5.010 SHAFT FOR PADDLE STRADA MP

F.1.020.MP GROUP PROTECTIVE COVER X PADDLE

E.3.009 VERTICLE GAUGE FOR PADDLE

H.1.021 EPDM O-ring 103 (or2018)

A.2.018 VERTICAL MANOMETER NUT

A.2.019 VERTICAL MANOMETER FITTING

H.1.020 EPDM O-Ring 3024

How much cost you for all the Parts? also it's available in Sydney or i have to order from La marzocco or USA?

cheers...

[BLrdFX]

Your are correct, it would look a bit weird, but going with the elbow idea and using copper tubing to locate a gauge elsewhere, like in the main panel somewhere would be OK. I am not sure about the space behind those panels and if there is enough space to do it.

Watching the brew boiler pressure drop (slowly) to my 2 bars of line pressure while pre-infusing seems to help in the taste department.

[coffee_machinist]

you could also use a male to female elbow fitting and turn the gauge 90 degrees to the right if you really need to. It would look a little odd, but work just as well.

[BLrdFX]

Mick:

How far above the paddle does the gauge stick up? I would appreciate knowing that height.

I really would like to do this MOD and I have the group rebuild kit and tool so the Strada parts are the only stuff I need now.

BTW, where did you get those cool glass end panels?

Thanks for your time in writing up this fine explanation

Stephen

[coffee_machinist]

Oh, and contrary to what I wrote above, Veneziano First Pour in Bond st. put in a 3 group strada MP recently.

[BLrdFX]

I need to convince my wife to give up the cabinet above the LM/3 because that gauge stick up a bit to far to open that door.... Darn

[micksquires]

I know this has nothing to do with it, but geez Mick... You've gone from a Breville combo, to a minore db, to a LM GS3 paddle. Plus not to mention every mazzer ever made.. And all since January... Lol That's awesome

Haha yeah I've gone a little out a control, i had the opportunity to get the GS3 at an amazing price, why not. I'm actually living in my first real home in about 5 years, I've spent the past few years living/working in and out of a suitcase all over the globe.

[coffee_machinist]

Mick, exactly none to my knowledge. Most Strada purchasers go for the EP and consider that the only one worth having, which is a little misguided I think.

[micksquires]

I must say I was surprised when I saw where the brew gauge was on the MP Strada, as it sits directly above the group it could quite easily get clogged up with coffee solids. No reports of stuck gauges yet, but time will tell.

Rick how many Strada MP's have you guys put out there or service? Ive pulled the gauge off a couple times to see if there is any solids build up but there doesn't seem to be any so far. I'll post that video up tomorrow when i get a chance

[wonder]

I know this has nothing to do with it, but geez Mick... You've gone from a Breville combo, to a minore db, to a LM GS3 paddle. Plus not to mention every mazzer ever made.. And all since January... Lol That's awesome

[coffee_machinist]

I must say I was surprised when I saw where the brew gauge was on the MP Strada, as it sits directly above the group it could quite easily get clogged up with coffee solids. No reports of stuck gauges yet, but time will tell.

[micksquires]

All done mate, theres no difference between what ive done and a Strada MP group. They react exactly the same..

[micksquires]

Nice work Mick!

I shudder to think what you paid for those parts... the plunger alone is worth a few hunge retail! The Strada bits are a nice refinement to the LM paddle group which is already a thing of beauty.

I'd be interested in a video comparing the system pressure and the group pressure during an extraction, if you can be bothered. Would be keen to see the ramp-up after the gicleur.

Yeah mate the parts weren't that cheap, obtaining those parts was a mission though, the shaft is worth $230 I think.. If you have access to the lathe, you could drill your existing shaft and tap a thread into it quite easily. Thats the only difference between the two.
The group gauge and the system gauge are actually the same pressure when the pump is fully activated and a correctly loaded puck is being brewed due to the group being fully saturated but its quite cool to see what happens to the pressure at the group when its under extracting its drops a bit due to there not being enough resistance from the grounds. Also during ramp up is pretty cool to see whats going on. I'll record a video tomorrow for you. Ive also checked with a Scace II device to see if the reading are the same on the group gauge and the device. They do read the same.