[cuprajake]

Are there any with the gs3 wands in the wild yet.

Think they make the look of the machine

 

[rusty pie]

That's how I've ordered mine but it hasn't yet made its way down under.

 

[Holonomic]

Anyone know what their brew boiler was set to out of the factory? I changed mine in error and would like to put it back to a base mark of the shot I pulled earlier <3

 

[rusty pie]

I was trying to get my head round this out of pure technical interest. From @DavecUK posted cad drawing earlier rotating that would move the mounts for the pump. I think pulling the lever forward pushes on the lower two bolts which are in the middle of the plate, rotating around the top as an axis. If I had a metalworks shop I'd would want two cross beams to the uprights and mount the group on that. Then a triangle of Beams front to back. But it'd probably still flex so then I'd pour the concrete 😉

I hope I'm not going to bore people to death by going too technical, but I am thinking of a way or reducing the flex without adding much in terms of structure.

Currently the strengthening bracket reacts in torsion to the overturning moment introduced by cocking the lever. Open section beams (such a c-section bracket) are much stiffer in bending compared to torsion.

If the bracket is turned 90 degrees to have vertical flanges running for the full height of the front panel picking up directly on the top and bottom plate, the bracket would react in bending instead of torsion. The flanges would have to be uninterrupted, i.e. without cutouts like in the cad model.

 

[DavecUK]

I'm 100% up for it.. how many can you accomodate? (If you are serious!) We could ask @Paolo_Cortese to provide a couple of Demo machines maybe and some of the advertising partners could provide coffee samples. Oh what fun!

I can accommodate lots of people... Late summer to Autumn

 

[DavecUK]

Anyone know what their brew boiler was set to out of the factory? I changed mine in error and would like to put it back to a base mark of the shot I pulled earlier ❤

probably 102, doesn't matter, try it at 8-10C higher than the group....All temperatures shown are actual temps. Then use the advice in the user guide I wrote to fine tune it. The brew boiler (if not too far out) only has a minor initial effect on brew temp, which is tightly controlled by the group heaters.

 

[Holonomic]

probably 102, doesn't matter, try it at 8-10C higher than the group....All temperatures shown are actual temps. Then use the advice in the user guide I wrote to fine tune it. The brew boiler (if not too far out) only has a minor initial effect on brew temp, which is tightly controlled by the group heaters.

Cheers Dave - your guide is indeed VERY good - thank you for that.

I am looking forward for some fresh beans to turn up, I have a 2 different Burundi's turning up so I shall be able to (hopefully) to dial those in. I am going to be getting a new tamper and probably an IMS filter basket ASAP, although the tamper which was included serves a purpose there is a fair bit of wiggle room and I do not seem to be able to get decent puck prep with it (user error!).

The shots I pulled this AM were pretty good and made a fine milk drink, I think the other half is happy with the purchase too!

 

[cuprajake]

With the group being a big chunk of metal, how does it react to temp changes?

 

[The Systemic Kid]

Two group heaters are, I think, 200 watts combined so they do a good job getting the group up to and maintaining set temp. Takes 15 mins from cold to get to 93-64c

 

[cuprajake]

Sorry, should of been clearer, i ment once up to temp say 94 if you wanted to drop to say 92 for a darker roast. I presume it would heat up quick due to the way the groups heated.

 

[Like Medium Strong Coffee]

For my own understanding, does the back to back shots at two different temp especially at 94 for the first and 92 for the second require additional waiting time as the group head drops back to 92.? I'm sure it is a matter of a few mins, even in the case of a reverse (92 to 94). I imagine the group head will be ready by the time I am ready to pull the next shot. Thx.

 

[DavecUK]

@Like Medium Strong Coffee @Cuprajake Yes, within a few minutes the group will have lost the temperature and be ready for the next shot. Here is an example, where in 45s the group temp drops 1.5C. Obv, you don't have to switch the group off for this to happen, just set your new temperature....

 

[The Systemic Kid]

Sorry, should of been clearer, i ment once up to temp say 94 if you wanted to drop to say 92 for a darker roast. I presume it would heat up quick due to the way the groups heated.

Group heaters take the group from 92c to 94c in 20secs and 32 secs to drop back from 94c to 92c after resetting the desired temp.

 

[Like Medium Strong Coffee]

10 minutes ago, DavecUK said:

@Like Medium Strong Coffee @Cuprajake Yes, within a few minutes the group will have lost the temperature and be ready for the next shot. Here is an example, where in 45s the group temp drops 1.5C. Obv, you don't have to switch the group off for this to happen, just set your new temperature....

Wow! It's probably going to take more time for me to dial in for the next shot than this! Thx Dave for the awesome video. Can't wait for my machine. 😂

 

[4085]

Just pulled the nicest decaf espresso I can remember having. The beans were Extract Sugarcane decaf, 18 gm in around 36 out at 93 degrees. I detected notes of citrus I have never experienced before in this bean, so am looking forward to trying another one shortly! When I say the nicest decaf I can remember, I really mean it! I cannot offer any explanation of course, but to future owners, this maybe something you can look forward to

 

[Like Medium Strong Coffee]

@dfk41 - Did you grind a tad finer than a normal espresso grind ? Thx

 

[4085]

@Like Medium Strong Coffee I definitely grind decaf finer than non decaf but the Evo does not equire as fine a grind as my last lever needed.......which I cannot really understand. Also, I used to dose at 15 gm and have happily moved up to 18 now

 

[4085]

I should add, having the ability to vary brew temp by 0.5 degree at a time does let you play both with accuracy and the ability to detect whether it makes any difference, in a way that machines without dual boilers and pid's can only dream about. I was sceptical that 0.5 degree either way, could make much of a difference to a beans characteristics......wrong!

 

[shimon]

For my own understanding, does the back to back shots at two different temp especially at 94 for the first and 92 for the second require additional waiting time as the group head drops back to 92.? I'm sure it is a matter of a few mins, even in the case of a reverse (92 to 94). I imagine the group head will be ready by the time I am ready to pull the next shot. Thx.

I've heard of people putting a wet cloth on the grouphead to cool it down quicker, but sounds like the EVO is pretty quick anyway.

 

[Like Medium Strong Coffee]

@Like Medium Strong Coffee I definitely grind decaf finer than non decaf but the Evo does not equire as fine a grind as my last lever needed.......which I cannot really understand. Also, I used to dose at 15 gm and have happily moved up to 18 now

Thank you David! I wonder why the Evo doesn't require as fine a grind as your other lever. Is it because of an accurate control and a stability of the group, the basket, the double spring vs a single? Dave may be able to throw some light on this.