Sworks one off shower screen for ACS

Cuprajake · 5 Mar

Theres more going on though that we cant see, when it’s all under pressure surely the fluid dynamics change, the pf decent made to catch water is a good idea, but again without coffee kn there was cant truly know whats happening.

Then i think to myself can one really taste a difference with that given there are so many variables

Ive not looked at the spec for the new rotary pump used in the evo 2 but i know the gear pump was very quick fill.

When we are trying to mimic the steam boiler infusion pressure of gone by levers.

RRaja123 · 5 Mar

Shower screens are generally more about what happens during fill rather than when under pressure. Pathways form where water first hits, and if, due to uneven distribution, there’s a disparity on the surface of the puck, it’s where most of the water will tend to go when pressure ramps. That’s the theory anyway (and what some people are willing to pay substantially to find out).

Adrianmsmith · 5 Mar

Raja123

@LMSC

I will be the first to admit that after changing from gu10 clip to circlip and “curing the issue” of “water leaking from around the shower screen” there was no difference in to shot or cup!! I felt happier for a few minutes until i forgot!!

Yesterday after receiving the bravo tamper and therefore having to change from ACS to IMS competition basket due to the basket size, shot time went from 26s to 42. Had to grind coarser. Had expected the opposite. Im not suggesting that is anything to do with the tamper, just the basket.

RRaja123 · 5 Mar

Adrianmsmith yeah but you don’t count, cos you add milk! :D

LMSC · 5 Mar

Adrianmsmith bravo tamper

What’s your tamper size please? You may observe that shot time changes a bit between single and double tamp(s) using the Bravo tamper. Mine is 54.9 mm.

I am sure you would know that these tampers hides coffee powder, over time. I routinely clean out that daily. 😊

Adrianmsmith · 5 Mar

Raja123 hey, ive not heard that comment yet this hear 😘🤪

Adrianmsmith · 5 Mar

LMSC What’s your tamper size please?

Afaik 54.7 but will check.

On a night out tonight

Too big for the acs basket, which i did know. Had been using a 54.4 for that and that was a sloppy fit in the ims comp basket.

Bravo is a good fit for the ims. Feels same as the 54.4 did in the acs.

Need to investigate but i feel the taper on the ims is slightly more than the acs as well . Mainly because at first glance when I store the puck screen in the basket its the same fit in the bottom of the basket as it has been in the acs basket….

Only had 4 cups so far but seems good.

Nothing ground breaking but i can see i dont have to concentrate any more whilst tamping!!!

Adrianmsmith · 6 Mar

LMSC I am sure you would know that these tampers hides coffee powder, over time. I routinely clean out that daily

How much disassembly do you do for the cleaning

dfk41 · 6 Mar

This is coffeebollox in its finest glory. That is to say, things that make perfect sense on paper but in reality affect the taste by 0.000000000000000000000000000001%

RRaja123 · 6 Mar

It certainly isn’t for people that cant even taste basic flavor notes!

Adrianmsmith · 6 Mar

Raja123

Thata me out on 2 counts 😎💥

LMSC · 6 Mar

Adrianmsmith Hardly. It just works

The coffee would hide between the top of the base and the bottom of the handle. A few seconds to brush them off. 😊

dfk41 · 6 Mar

Raja123 It certainly isn’t for people that cant even taste basic flavor notes!

Who is it for then? The very few super tasters that claim to exist, or the plentiful ego driven people who imagine owning something like this will improve their coffee

RRaja123 · 6 Mar

dfk41 well, I can certainly see the meditation is working, Dave. :D

This was originally a commissioned product, sought after by someone who wasn’t happy with the stock clip and screen (who am I to argue with them for that?). Now it’s being offered to others who may want it, perhaps for similar reasons, perhaps for others.

It is fairly obvious the price excludes die-hard skeptics, leaving those with disposable income or a purpose they can justify to themselves - could be that some people care about the stock screen and spring not fitting well enough for good wetting of the puck - I’ve had nasty lop-sided extractions occur in that situation, and I don’t enjoy messing around with the circlip (something Jake also mentioned). I’d like it to experiment with it, and will happily run with it if it makes my life a bit easier on the maintenance front.

Cuprajake · 6 Mar

id be asking acs if it messes with warranty- i know it would be a great manufactures get out of jail haha

@Raja123 was that extraction with the safety sleeve?

the original clip is horrible, the gu10 clip easy to use, i found aftermarket ims too thin and rattled, the stock fit better,

RRaja123 · 6 Mar

Cuprajake No, the safety sleeve was a bit more consistent for me (in that regard - fitting with shower screen, but its distribution has issues due to a single off-center hole and no distribution block). Since you and a few others had issues with the hole being too far off-center, ACS likely ensured the hole was drilled to land within the blank perimeter of the shower screen.

I noticed the stock GU10 spring and shower screen combo doesn’t always sit square in the stock sleeve, and had noticed some extractions were biased on one side of the basket. Subsequently, went over to the circlip Adrian linked, and have a lot more consistency overall, but can’t say I enjoy resintalling that circlip when I decide it’s time for a clean and a quick lube of the accessible portion of the sleeve.

Cuprajake · 6 Mar

i wonder if something along the lines of the seal and screen ala e61 but off a dalla corte would fit? but i think they are center screw too

RRaja123 · 6 Mar

Cuprajake similar train of thought: that was one of the reasons I wanted to try a Matrix screen - the column of water needs to build to break through the barrier, at which point distribution from the sleeve isn’t as important. It needs a seal to work, though.