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snwcmpr
08/18/2019 4:31 AM
Awesome I sent an email to AllenB and JackH The email to JackH failed. I had screenshots of my settings.

allenb
08/18/2019 3:37 AM
Jack and I are enlisting help from our PHP site admin to try and solve as soon as possible. Thanks for letting us know.

snwcmpr
08/18/2019 2:53 AM
I got another PM last night......... No email notice.

snwcmpr
08/17/2019 7:36 AM
Email address correct. I constantly check junk folder. I turned off, then on, the setting to receive notice.

JackH
08/17/2019 7:10 AM
Also check that there are no spam filters set for email.

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Another electric 1kg roaster
danst
This is my old Ugly roaster, in fact up to 700g greens :
https://forum.hom...rowstart=0

After almost 5 years of roasting I decided to make a new one. 50% larger.

Why ? I´d like to have a roaster that is capable of roasting in batches with 500-1000g result.

I have positive experience with Ugly 600, so I use this model and I change it a bit.

The changes :

Drum 219mm x 190mm (dia x length) , 3 mm stainless. (Up to 1200g greens ?), intended mostly for 630 and 950g batches.
Perforated material is very difficult to obtain, so I use now solid drum design. But with large diameter and perforated back (RV 3-5).
The frontplate not welded- only screws, it can be replaced with another one.
There is stainless only on drum and frontplate (4mm thick at first).
I believe the roaster don't need 100kg...

I need to make the roaster group shorter (room space reason), so I use a new smaller chaff cyclone.
The fan must be new, with smaller diameter.
I use a new short drum motor with angled gearbox.

The heating is the same , with main part doubled. The total output close to 4 kW.

I use old cooling fan and electronic of Ugly I (3 probes PT1000 and RpI with my SW). I make (I hope) motor powered cooling tray.
With other details -I have no precise idea, some things must be solved on the fly...

I must complete parts and then recycle the old roaster, without big dwell time.

With limiting tools and skills it´d be ugly again, I hope without functional compromises.....
(toy welder and 1mm sheet metal - it´s a pure fun)

Here some pictures of progress:
Edited by danst on 05/06/2019 6:59 PM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
Pictures:
I can´t upload the .jpg files, why ?
Edited by danst on 05/06/2019 11:10 PM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
renatoa
Edit post, look bottom button "Choose File", browse, select, Save Changes.
 
danst
I make this from yesterday many times , without succes, new reply too.
File type OK, size, number , the same way.
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
The last try to upload pictures with another browser...
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
JackH
Make sure your filename is normal and without spaces or special characters. Do not use the "preview post" or "Preview reply" button. It somehow causes problems with the images. You can have a file as large as 10MB.
JackH attached the following images:
variac_web_1.jpg roast_web_1.jpg mod_oven_back_6.jpg mod_oven_web_6.jpg

---Jack

KKTO Roaster.
 
danst
No special characters and spaces, only numbers. I try a to z only.
Nothing.

And now longer name.
And another, It goes now, I must get only one picture and repeat it by editing, although it ´d be max 8 together.
(It was only 7 but failed)
danst attached the following images:
komplet_7.jpg ac_1.jpg ad_1.jpg af_1.jpg ag_1.jpg at_1.jpg

Edited by danst on 05/07/2019 3:16 AM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
And the answer is : the 7. image caused problem, after opening and saving (ungchanged) it goes now.

Sorry, bad luck, it is too much needless replays.
danst attached the following image:
az.jpg

Edited by danst on 05/07/2019 3:19 AM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
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JackH
Odd problem and I am glad it works for you now. The system is Linux based so I usually suggest avoiding Linux reserved characters like / > < | : &.
---Jack

KKTO Roaster.
 
danst
some progress....
danst attached the following images:
p5_1.jpg p3_1.jpg p2_2.jpg p6_1.jpg p7.jpg

Edited by danst on 05/21/2019 4:35 AM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
Liam
I hope you got exactly what you wanted :) Based on the technical specifications, this should be something big!
 
BobbyS
This is coming along nicely. I bet it is going to work great! Nice job!
 
danst
The time is short, I tested the uncomplete roaster for heat behaviour and drum function.
No heat problems, the drum is OK, but 2 issues appear here :
1. the chute funnel valve is not optimal - some beans drop to air tube
2. the front plate door is small - to empty all beans takes 18-20 sec

The vlave is redesigned already, the door can be with new plate larger. I don´t know if it can be a problem.
I guess, a minor problem. In most roasters it takes about 10 sec, but longer times too. It is a constant and so unimportant. And melange type roast is always partially present.
The thickness of the front plate (4mm) is now the last unknown. In case of a new , 5 or 6mm thick, the door will be larger, when is 4mm OK, the door remains old.
danst attached the following images:
a12.jpg a13.jpg b1.jpg b2.jpg b3.jpg b4.jpg a11.jpg

Edited by danst on 07/09/2019 10:41 PM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
Now, I have finished the first version of cooling tray, with provisory motor: 60KTYZ 50rpm. The right 68KTYZ with 20 rpm is on the way. The accuracy is not my thing, I use a hanging system to accept all odds. The function is perfect with 50 rpm too.
The roaster is now installed on the place.
danst attached the following images:
c3_2.jpg c2.jpg c1.jpg b3_1.jpg b2_1.jpg b1_1.jpg

1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
Again with incomplete roaster, I tried the probes and roasted some beans, 650 and 950g .
The BT probe was now 12mm M4 PT1000, but the behaviour was not good. It was far away of what I know.
I use next my old 40x3mm probe again. The mass of the roaster is much bigger then by Ugly I and I must adapt to it.
From first impresions, I beleave maximum 1250g roasts are possible.
After that I completed air venting system and monitoring of air pressure with new sensor : +-500 kpa SDP816-500.
All functions are ready, but cooling air and roasting exhaust in one tube - this is false. The cooling air goes by return to branch pipes, I have this not assumed. I try it once again by roasting.
Now, the all electronics is provisory connected and for longer time it must so remain.
I must split up venting and adapt to the new roaster. Then perhaps think out front plate thickness.
But the most is done, I can roast again.
danst attached the following images:
d2.jpg d1.jpg d3.jpg

Edited by danst on 07/10/2019 8:35 AM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
allenb
As usual, great roaster build! Sounds like once you've gotten your exhaust venting worked out you will have a very capable 1.25 kg shop roaster. Keep us updated on progress and also let us know how well you're able to control it.
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
danst
Next weeks show all possible problems...

Here is a short video of cooling tray in action, this system with loose silicone (or teflon) lath can overpower all inaccuracies :

https://youtu.be/...
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
danst
The problem with cooling successfully solved.
In branch pipes are helping counters made. There is no problem with reverse air already.
But in a roasting session, it must be at least very small flow in smoke fan to prevent smoke to go reverse from cyclone fan - I have no problem with it.
The pictures can show it.

A profile (roasting with only 650g beans) shows, that there is no problem to cool down the roaster (this was in fact too quickly).
I have calculated the mass of the front plate. This large diameter 4mm plate matchess 6mm by North and others, with diameter closer to drum dimension. That means, there is a room to go further, I think 6mm, as the others go with more then 6mm ?
In winter it can be preferable to have more heat storage and the roaster can manage it in summer too.

In the profile the horizontal lines from above :

blue : cyclone FAN pressure sensor
purple : cyclone FAN rpm
red/brown : MET (3x12mm sensor on frontplate outside the drum)
green: BT (3x40mm sensor in beans)
violet/brown : ET (3x30mm sensor in feed chute)
declining: RoR
red: heating

The roaster is now rough ready, I must master new behaviour and then try the thicker plate. But this can wait.
So as a minor finishing.

I can say, the new roaster is better then Ugly I , now it is a true drum roaster. The beans are completely without scorching or tipping, even with shorter roasting time. The difference in between FC and the end is about 5C smaller.
The coffee is more "rounded", I prefer it. ( solid vs perforated ? big mass vs mass? )

I like the idea with only 1 venting pipe compared to 3 ones before.
All this automated cooling is pure fun too.
The "preheating" of the air (acces of air thru warm section conducting or direct from cool ambient) is a good upgrade and the end of roasting can be more easily done.

It was worth the whole work.

Additional info : roaster alone: about 33 kg
cooling tray : 10 kg
cyclone : 6 kg (only 0.7mm plates)
pipes : 3kg ?
carriage : ?

The whole control by Rpi and manual switches, variable drum speed 50-80 rpm.
Stand-alone equipment, no laptop needed.

By the way..... how thick is North 1kg front plate ?
danst attached the following images:
e1.jpg s3.jpg s2.jpg s1.jpg s0.jpg

Edited by danst on 07/20/2019 9:09 PM
1000g Ugly roaster, "saturated" Bezzera BZ09, Fiorenzato Doge 63, Mazzer Jolly, Handground, Technivorm Moccamaster, Aeropress.
 
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