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Discussion starter · #61 · (Edited by Moderator)
Cleaned the shower screen today and thought while I have it I will install the silicone gasket.

The other picture shows where the portafilter fits into the group when the VST basket is being used.

I pulled a 28 second shot with 18g in the basket, pressure went up to just below 9 on the manometer and by the end of the shot was barely in 8. I'm assuming that is just the VST basket as the IMS generates that bit of extra pressure due to the shape of it.

The VST also speeds up in the second half of the shot, reminds me of my Sage machine, whereas the IMS seems to hold the same flow rate through the shot. Also my puck always sticks to the shower screen with the VST

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#62 ·
Caffeinated_fiend said:
Also my puck always sticks to the shower screen with the VST
Click to expand...
Check:

https://www.coffeeforums.co.uk/topic/56781-are-you-getting-stickystuck-pucks-please-give-me-your-feedback/?do=embed

Caffeinated_fiend said:
The other picture shows where the portafilter fits into the group when the VST basket is being used.
Click to expand...
That's strange. I just checked mine. With the VST 18g and the OEM portafilter that came with the machine, it locks at 6 o'clock. With my ECM bottomless, it locks at 6:30. Are you sure you have:
- dried up and cleaned all up before fitting the new gasket;
- pushed it all the way up. Use your fingers to start with, and then lock the portafilter in, with a basket, all the way as far as it will go past 6 o'clock. This ensures the gasket is fastened and snug fit properly against the group.
- the shower screen is not tightened to the point that the dispersion plate squashes the gasket. The retention screw should only be fastened as far as the shower screen no longer spins on the dispersion plate. This is literally finger tight with a 1/4 turn to nip up.
 
Discussion starter · #63 · (Edited by Moderator)
MediumRoastSteam said:
Check:

https://www.coffeeforums.co.uk/topic/56781-are-you-getting-stickystuck-pucks-please-give-me-your-feedback/?do=embed

That's strange. I just checked mine. With the VST 18g and the OEM portafilter that came with the machine, it locks at 6 o'clock. With my ECM bottomless, it locks at 6:30. Are you sure you have:
- dried up and cleaned all up before fitting the new gasket;
- pushed it all the way up. Use your fingers to start with, and then lock the portafilter in, with a basket, all the way as far as it will go past 6 o'clock. This ensures the gasket is fastened and snug fit properly against the group.
- the shower screen is not tightened to the point that the dispersion plate squashes the gasket. The retention screw should only be fastened as far as the shower screen no longer spins on the dispersion plate. This is literally finger tight with a 1/4 turn to nip up.
Click to expand...
The machine really was clean as a whistle when I changed the gasket, in fact the fit is exactly the same as with the OEM gasket. I can get the portafilter to 6 with the OEM basket as you can see in the video, however the VST most likely wouldn't go to 6 even with a lot of pressure.

The dispersion plate is tightened as you suggested.

http://caffinatedfiend.quickconnect.to/mo/sharing/ru9cZhhPy

The coffees a little old but it's all I have left at the minute.
 
#64 ·
Discussion starter · #65 · (Edited by Moderator)
MediumRoastSteam said:
Is that with the new gasket and VST basket?

Looks all good to me. One day, eventually, when you open the machine up, you may wish to increase the pressure a little. Personally, I'd just leave as is. That's very similar to what I have (maybe mine is 0.5 bar higher, if that).
Click to expand...
That was with the OEM basket and new gasket, pressure is lower with VST, starts under 9 and stays just within 8 with the VST. I will have to try removing the filter as it was a little higher before I put that in. I wonder if that has any effect, I am using Tesco Ashbeck water but I put the Lelit filter in as well, you can probably hear it in the video as it wobbles about in the tank I think.
 
Discussion starter · #67 ·
I pulled a shot without the filter and it made no difference to pressure. Just thought I would try it, it's just strange that it was higher to begin with, maybe I'm just misremembering and it was like this from the start.
 
Discussion starter · #68 ·
I need to get a bottomless portafilter as my next purchase, I have noticed on my pucks that with the OEM I always seem to have a little dot in the middle that I'm guessing is channeling that isn't there with the VST.

I'm distributing from the niche, tapping it level and giving it a tap on the tamping mat to get rid of any air pockets. Next I'm using a distribution tool to get a level surface and then tamping.

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#69 ·
Dose 18g of coffee into the VST and you'll be fine. Remember, when the shot finishes, the puck is sucked back up and will collide with the shower screen. If it tastes good, then happy days. But yes, a bottomless is handy for diagnostics and to keep things clean afterwards.

Caffeinated_fiend said:
I pulled a shot without the filter
Click to expand...
I have no idea what this means (presumably without the shower screen?). And, as I said many times before, ignore the pressure for the moment and focus on what matters. You are chasing unicorns. Different flows = different pressures. The pressure will go as high as the OPV with a blind basket. When there's flow of coffee, pressure will start declining. It's just natural, as explained before.

For your own sanity, I will not comment on your "pressure" questions anymore šŸ™‚ - Happy to help with everything else šŸ‘
 
Discussion starter · #70 ·
MediumRoastSteam said:
Dose 18g of coffee into the VST and you'll be fine. Remember, when the shot finishes, the puck is sucked back up and will collide with the shower screen. If it tastes good, then happy days. But yes, a bottomless is handy for diagnostics and to keep things clean afterwards.

I have no idea what this means (presumably without the shower screen?). And, as I said many times before, ignore the pressure for the moment and focus on what matters. You are chasing unicorns. Different flows = different pressures. The pressure will go as high as the OPV with a blind basket. When there's flow of coffee, pressure will start declining. It's just natural, as explained before.

For your own sanity, I will not comment on your "pressure" questions anymore šŸ™‚ - Happy to help with everything else šŸ‘
Click to expand...
What I meant is that I removed the Lelit Filter from inside the tank and put back the little filter back on. If you remember I lost almost all pressure when I installed it and I think it was due to a kink in the tube despite not seeing one.

I have ordered the walnut bottomless so that will be interesting and potentially messy.
 
Discussion starter · #71 · (Edited by Moderator)
Had a play around with some preinfusion this morning on the VST using a light roast, set the Elizabeth to 95c and pulled the first one without pre-infusion and it came out at 26 seconds for about 38g in the cup. Had this as an Americano and it was good, orange and walnut tasting notes and it was big orange flavour in the cup.

Second drink I tested with a 7 second pre-infusion, 3 at the pump 4s steam. Same 18g dose and same grind to get a ballpark for the speed, 20s for my target weight of 36g. I went two dots finer on the niche and got my 38g out in 29s.

Its a whole different look using the VST baskets, they really do speed up especially when you add pre-infusion into the mix. Once the pump kicked its it was trickling out and then it was up to around 2gs coming out. I made this into a latte which I don't normally have but the steamer is so much fun on this machine and I can make some incredible milk compared to my barista pro. The drink also tasted good, the light roast couldn't really put a dent into the traditional latte sweet milk taste however.

Also as Dave pointed out in his review, he thought that 16g was a good dose for the OEM basket and when I dosed that this morning on some older grounds to practise my distribution I had no pin holes in the coffee, just a little shower screen indentation.
 
Discussion starter · #72 · (Edited by Moderator)
Good morning, does this look underdosed? I have some Rave fudge blend that I am using at the moment, I am dosing around 16.1 into the Niche using the standard Lelit basket, I was going to use the VST but I worried it would be very easy to over-extract with that.

Amazon lost my Bottomless portafilter and to be honest using that will hopefully be a good indicator of if it is channeling. It tasted ok but I'm at a reduced tasting ability as the kids going back to school has given us all tonsillitis from the same cold. Kids who'd av em.

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Discussion starter · #74 ·
MediumRoastSteam said:
@Caffeinated_fiend - That doesn't look good. Feels to me you have too little coffee in the basket.
Click to expand...
Is there a good rule of thumb with regards to dose between roast types? What's the optimum way to assess dose in the basket?

Is it just the basket in that it has a wider tolerance compared to a VST which is 1g either way.
 
Discussion starter · #76 ·

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Discussion starter · #77 · (Edited by Moderator)
Finally got the Lelit Walnut Bottomless delivered, Amazon "lost" the first one that was sent so I thought I would post the obligatory bottomless shot. This was 18g in a VST basket of Raves fudge blend with exactly 36g coming out in 32s. A little long but was fine in a latte.

Select Original on the video as High is messed up a bit

http://Caffinatedfiend.quickconnect.to/mo/sharing/piViEBWK7

I also added the finished latte but I put a little too much air into the milk which didn't help with the heart.

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Discussion starter · #78 ·
Afternoon, just wondered if @DavecUKor @MediumRoastSteamhad a go to mat for the top of the espresso machine. I have been looking on Amazon but I'm worried that they might stick to the top of the machine or generate a smell when they get warm type of thing. Not exactly sure what I'm looking for.

On a side note I have been using the draper spouted jug to fill the reservoir and that has been so much easier than taking the tank out so thanks @DavecUKfor that one šŸ™šŸ»
 
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MediumRoastSteam
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