Shipping July released today. it could of course be an April fools joke. Albeit a strange one… https://www.nichecoffee.co.uk/products/niche-duo?variant=43187239846019

@"Igm45"#p40972 Not an April fools joke….people have ordered.

Some time to launch! 😏 I see from the specs that it's physically bigger than the Zero….assuming this is - at least in part - to house a bigger motor for the flats?

I still believe it's April fool's, too good to be true….

@"[unknown]"#p41017 Have you seen he full manual you can download and read ?

@"MattH"#p41026 https://cdn.shopify.com/s/files/1/0081/2076/2450/files/N685_INSTRUCTION_BOOK_ROW_83F_1_080323_WEB.pdf?v=1680015642

Two excellent videos from Jake. https://www.youtube.com/watch?v=JKdyBJ7TkhU https://www.youtube.com/watch?v=C90i5RVoBpo

@"DavecUK"#p41257 There are a couple of others there now too. (why does the plug change colour 🤔???)

> @"Del_UK"#p41290 (why does the plug change colour 🤔???) Dunno? RH Lead swaps colour as well in the starting clip

Can I chuck my hat into the ring? Right, first off, this is not an engineering review. I was lucky enough to be asked by Niche back in October, to accept the latest version of the Niche Duo. I had to sign an NDA and that was that. A couple of days later, a package turned up and I thought, I recognise that. On inspecting the packaging, it is quite clearly designed with the Zero experience in mind. The packaging has instructions printed on it for starters. Once you open the outer box, there is a strap/handle to help you lift the inner box meaning that you do not have to tip it upside down to force it out! I received a gleaming white model that arrived with espresso burrs fitted to it. A quick glance through the comprehensive handbook to make sure that there was nothing I needed to be aware of, and coffee here we come! When I dial in a new grinder, I always pull the first shot at whatever it arrives set to and take my reference from there. The third shot was spot on. 16 gms on an espresso setting takes me 16 seconds. I did not suffer from any static, the grounds were nice and fluffy. I believe the burrs originate from Mazzer (both espresso and brewed). Eventually, I thought it was time to try swapping the burrs over. Again, no help from Niche. They selected me as tester for their idiots instructions, and I feel well qualified for that role. I have made a video that I will post and it took me 70 seconds or so to swap over. You raise the lid, unscrew the silver dial, remove the screw to tighten down the top burr set, then remove it. Push down on the bottom burr set and remove. The process is then repeated with the brewed burrs (these are a different colour, blue) in reverse of course. I am deliberately keeping this summary vague! I have no idea as to how they get a big flat to be retention free. Having swapped the burrs over many times, and since access allows with ease, whenever I clean it out the retention is minimal. If I remember I will weigh it at some point but as any Niche Zero owners knows, you learn to trust your machine and just accept the claims! https://youtu.be/63Iv5gUy1JQ https://www.instagram.com/reel/CqlKJZjg_ZPsfdrHkp5cDIoL_KjSXhE5E5st-00/?igshid=Mzc1MmZhNjY=

@"Del_UK"#p41290 because I have a white extension lead, which I took out of the vid 😂

Niche duo - 83mm flat

Adrianmsmith

Igm45

And only 4 (?) X the price

…. Would hope there’s some slight difference 😎

LMSC

Adrianmsmith Would hope there’s some slight difference

Please don’t !

Giphy - Eddie Murphy Shut Up GIF by Bounce

😂

Cuprajake

Well this time last yr was quite an exciting time for me,

I was asked to be the first person to speak publicly about the niche duo, was a massive honour for me,

Been a real double edged sword mind as that really brought the jealous/hateful side out in some, which turned me off multiple forums.

What I can say, is that I’ve had a duo on my counter for around 17 months, and in that time I’ve had no issues, it’s been really good, good coffee, easy to use and consistent.

I know some will always want more but after trying SSP MP in it and realising the hoops you need to jump through to get the best out of those burrs I went back to stock

Just want to shout out to James and Dave for involving me in the testing, I do appreciate it.

Adrianmsmith

Cuprajake

I remember April the first very well last year..

I did have to check with James that it wasn’t an April fool as some folks were suggesting that morning.

I Have to say it’s one that’s most likely a long term fixture of mine .

Anything coming along this year….? 🤔

Cuprajake

Nah I’d been well prepped before that lol 😂

Latte-Tart

I have been using the duo for a year. Almost all of the coffee i grind is between setting 1-5. This week i am using Newground - Cristo Liurai (from Dog & Hat), and i cannot grind it fine enough - it would have to be on -2 or so to even be in the ballpark.

I must have checked the zero point 10 or more times and i can clearly here the grinder touching at zero. i have tried all three orientations with no joy or improvement.

I am at a loss. i don’t seem to have anywhere to go to grind finer. Is there anything i can check? i have no other issues…

LMSC

Latte-Tart I had a similar problem - grinding the light roast steadily to the left from 5 to 0.5 and there were turbo shots lasting 15s.

Thanks to Dave, re-zeroed and added a washer to keep the centre bolt tighter. It was getting looser. I still occasionally find the bolt had loosened up a bit, but not sufficient to shift the grind size yet.

You might check these two, just in case.

Latte-Tart

LMSC

thanks - the bolt has never come physically loose for me.

i do have doubts about what counts burr touching noise though… for me i get a rubbing noise is slight when starts at zero, and becomes more obvious (like the Niche calibration video) at around -5 or so. The fact that i can hear a the beginning of a change in audio at zero is why i have set it there.

DavecUK

Latte-Tart The slight rubbing noise may well not be burr touching…some checks

ensure the grinder is totally clean.
re-check the “sweet spot”, best orientation of top burr carrier out of 3
check the polymer impeller (centre piece inside the lower burr), can be wiggled clockwise and counter clockwise slightly (e.g. some miniscule movement( and is not solid and immobile (which can indicate the locator tab trapped under the burr
Check the screws holding the burrs are fully tightened (you don’t have to go mad, just give them a tweak to check they are fully tightened (just don’t overtighten).

It could be the sweep arms whispering against the walls of the chamber and just to ask, you have never removed the actual burrs from the carriers have you?

Latte-Tart

DavecUK

Thanks Dave, i will check the screws and impeller on the weekend and maybe do a video of the calibration. when calibrating i get the same noises that Jake gets in his video which is reassuring and confusing.

out of the three sweet posts, the wo best are very similar. i have tried both and the results are not different.

the burrs have never been removed from the carriers. i have never checked the screws. they don’t appear loose.

i have run the lower burr only to see how it looks. the central shaft is spot on as far as i can see visually. i can see some horizontal (in the plane of the burr) misalignment of the lower burr by looking at the outer edge vs the chamber wall. it is hard to quantify or know if it is significant or not. i might be able to measure it against the wall of the burr chamber. i would guess at 0.5mm difference between the extremes maybe. I will try and get a slow motion video of this.

DavecUK

Latte-Tart i have run the lower burr only to see how it looks. the central shaft is spot on as far as i can see visually. i can see some horizontal (in the plane of the burr) misalignment of the lower burr by looking at the outer edge vs the chamber wall. it is hard to quantify or know if it is significant or not. i might be able to measure it against the wall of the burr chamber. i would guess at 0.5mm difference between the extremes maybe.

That’s a lot, if it is truly that much and would affect grind quality!

The central hole in the burr carrier must be…well central…check to see if it’s the edge of the carrier moving (run out), or the edge of the burr

Latte-Tart

DavecUK

Interesting. I have checked it tonight and done a few videos.

The impeller does wobble. One of the lower burr screws was not tight.

There are three videos and a three photos of the edge of the burr. You can hopefully notice the wobble relative to the chamber wall. I can’t measure it, but I think 0.5mm, so +/-0.25mm is about right.

I have not videoed the calibration as I’m hoping this might be the issue.

Overview

Close up at full speed

Close up in slow motion

DavecUK

After tightening the screw and re-zeroing/sweet spotting, you might find the issue goes away. To be honest the lower burr doesn’t look that bad. You could try loosening all 3 screws and re centralising the burr

Latte-Tart

i removed the burr with the idea that i might rotate it a third to see if it fitted any better. out of the three screw holes in the burr, one does appear slightly out - but there there is enough play in the fitting that it makes no difference.

i cleaned things up and put it back, rotating the burr one third and aligning by feel against the carrier as best i could. this resulted in the lower burr looking much better aligned. not perfect, but much better.

i then re-checked all the sweet spots. the original was still the best, but the calibration had now shifted to about -4, so 4 marks closer than before! Result.

looking at my typical grind range that would put my results in the range of 2 to 9 in the extremes, and probably 4-7 for most.

DavecUK

Latte-Tart Sounds like a good result.

dvogel1

Hello. I have a question about my Duo. Is the gear reduction something that can be shared? Ultimately I would like to know the output torque for the motor/gearbox combination. Thanks

DavecUK

dvogel1 Hello. I have a question about my Duo. Is the gear reduction something that can be shared? Ultimately I would like to know the output torque for the motor/gearbox combination. Thanks

I can’t remember now what it is…but it’s a lot…..especially considering it can grind 18g of green unroasted coffee, something I have never seen another grinder be able to do. They might chuck a few green beans in some and say look look…but never 18g!

Can I ask why you need to know?

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