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My Humble Turbo Roaster
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| Koffee Kosmo |
Posted on 02/18/2009 04:50
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Super Admin
Posts: 622
Joined: 31.12.08
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No Gella cant see anything
You need save the images as Jpeg
Reduce them in size to under 90 kb & 640 X 480
Hit the browse button and add
Or add them via a link from e.g. photobucket
In between this [img][/img]
KK
koffeekosmo.com.au I home roast and I like it 
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| Gella |
Posted on 02/20/2009 04:49
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Newbie
Posts: 5
Joined: 17.01.09
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Koffee Kosmo wrote:
No Gella cant see anything
You need save the images as Jpeg
Reduce them in size to under 90 kb & 640 X 480
Hit the browse button and add
Or add them via a link from e.g. photobucket
In between this [img][/img]
KK |
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| Koffee Kosmo |
Posted on 02/20/2009 22:41
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Super Admin
Posts: 622
Joined: 31.12.08
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A fine roaster building job by a fellow homeroaster member 
This is the Turbo Roaster Gella built
He was kind enough to email me the photos
His efforts must be applauded as it truly is a job well done
Gella you will need to report back with some roasting results and your experience with the roaster as a design ??
KK
Koffee Kosmo attached the following image:
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koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| Koffee Kosmo |
Posted on 02/20/2009 22:44
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Super Admin
Posts: 622
Joined: 31.12.08
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Also a compilation with the roast chamber & agitator attached
Gella has taken this design to another level with a dedicated cabinet and sliding cooling tray
That's what I would have done but my wife wanted it to stored away when not in use
KK
Koffee Kosmo attached the following image:
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koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| Koffee Kosmo |
Posted on 02/21/2009 04:04
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Super Admin
Posts: 622
Joined: 31.12.08
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Close up of roast chamber and cooling draw
Nice neat job
KK
Koffee Kosmo attached the following image:
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koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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Posted on 02/21/2009 09:21
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Super Admin
Posts: 3056
Joined: 27.06.07
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Wow, Gella! Your extremely impressive work reflects not only your skills but KKs great inspiration and instruction.
Simply awesome! Great cooling screen, too.
Gella, does your unit tilt and dump ove to the cooling section, or do you remove the roast chamber by hand?
CHAD
"You know, I think that horse is getting deader." |
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| Gella |
Posted on 02/21/2009 16:52
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Newbie
Posts: 5
Joined: 17.01.09
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Hi Chad,thanks for your positive comments also to KK for his great idea.
I have been looking for something like this for some time, you know, keep it simple stupid.To answer your question I remove the roast chamber by hand, as I said keep it simple.By the way my first cup from the first roast was the best I have ever had.
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| Island Addict |
Posted on 02/22/2009 07:09
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1/3 Pounder
Posts: 58
Joined: 13.08.08
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Gella -- Nice work on the roaster! I'm pursuing a similar approach, mounted on a cart with a pull-out cooling tray. Can I ask what you used for the gasket around the top of the pot?
My roaster is proceeding slowly, limited by constraints of work, other hobbies, and budget. But I did manage to do my first two test roasts yesterday:
150 grams to Vienna in about 10 minutes. Roast went a little faster than I wanted, and 1C and 2C were too close together. Next time I'll put the heat element on a router speed control to slow it down. The important thing is that the beans are very evenly roasted with no scorching, better than I've been able to achieve on my Poppery.
450 grams to City+ in about 15 minutes. I would have liked this one to go a little faster. Putting a gasket around the top of the pot should help a lot. Am also considering adding a small heating element to the bottom of the pot, similiar to what Farmroast has I believe. The important thing here is that the roaster can handle a pound. I was very pleased with the agitation of the beans, and the roast came out very even and nice. Am drinking it this morning and am happy with the results.
So far I'm very impressed with turbo oven roasting. The advantages are clear: 1 pound on 1200 watts; very even roasting; low noise; beans visible during roast.
Edited by Island Addict on 02/22/2009 07:09
Rob |
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| Gella |
Posted on 02/23/2009 02:47
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Newbie
Posts: 5
Joined: 17.01.09
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Hi Rob.The gasket I have at present is a tube from an auto shop which is rubber I think,but ideally silicon tube would be better' but this dose the job.
Have to agree about the roasts very pleasing as this is the first I have ever done.
G |
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| farmroast |
Posted on 02/24/2009 08:17
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1/2 Pounder
Posts: 153
Joined: 20.12.06
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 Congratulation Island and Gella! enjoy your Turbo roasters. High temp. silicone tubing can be bought in small quantities here
http://www.usplas...ct_id=8415
farm
Edited by farmroast on 02/24/2009 08:18
Ed B.
DreamRoast 1kg roaster, Major, Olympia Cremina, Technivorm 741 http://coffee-roa...gspot.com/ |
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| Koffee Kosmo |
Posted on 03/02/2009 20:08
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Super Admin
Posts: 622
Joined: 31.12.08
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Last Saturday I demonstrated my home roaster to a whole bunch of people
The Turbo roaster was also in a competition against a 1 kg commercial German built Giesen Coffee Roaster
All were impressed with the home roaster as it proved to all present including the professional roaster who was very impressed with the quality of the roast result
The green beans to be roasted were supplied by one of the people watching the demo (see photo of the roast)
This gentleman was so impressed with the roast results that he is now building my design TO roaster and is close to 3/4 complete
This is the roaster I was competing against
Koffee Kosmo attached the following image:
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Edited by Koffee Kosmo on 03/02/2009 20:13
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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Posted on 03/03/2009 06:55
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Super Admin
Posts: 3056
Joined: 27.06.07
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Lucky! I've never been in a competition here. Or, wait... maybe I should say there is no competition for me here.
Splendid results worthy of accolades!
CHAD
"You know, I think that horse is getting deader." |
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| Koffee Kosmo |
Posted on 07/25/2009 23:29
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Super Admin
Posts: 622
Joined: 31.12.08
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Update
I have had a busy time helping people to build there own Turbo Oven Roaster from around the globe
With a great deal of positive interest and end results
One question kept being asked
Will you make/produce your Koffee Kosmo Roaster for people that just want to buy one
"Answer"
"Yes the KK Turbo Oven roaster - advanced plans are on the drawing board to be made available in kit form"
However I will need to test the prototype first to see what the comfortable capacity will be
Quotes for pricing are now being finalized with engineering shop
Development costs so far have cost me a few thousand $$
But the finished product will be built to last
More on this and other developments will be posted here
KK
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| Koffee Kosmo |
Posted on 08/06/2009 00:11
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Super Admin
Posts: 622
Joined: 31.12.08
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Due to huge development costs
At first I will be making them available as a kit by utilizing off the shelf products and manufacture a docking system to join all its all together
If the roaster is received well by the coffee roasting community, the profits gained from this kit will finance the full design
However the kit will be neat,user friendly and above all functional
Roasting capacity will need to be tested but we are hopeful that it will be around 700 + grams but further sample testing will determine that
Currently
1) Working on a dual docking station for motor and Turbo oven
2) Kit style modular model at first by partly using some off the shelf products
3) Just ordered some sample drive motors with steel/brass gears and attached gearbox that will be manufactured to my specifications
4) Need to sort out an agitator coupling and drive coupling to be more user friendly
Any ideas on agitator coupling and drive shaft design ??
KK
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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Posted on 08/06/2009 07:29
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Super Admin
Posts: 3056
Joined: 27.06.07
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Why not borrow from the breadmaker? Remove a crecent from the shaft, then have the stirring coupling slide down using gravity to hold it in place.
CHAD
seedlings attached the following image:
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"You know, I think that horse is getting deader." |
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| Koffee Kosmo |
Posted on 08/06/2009 08:08
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Super Admin
Posts: 622
Joined: 31.12.08
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Thanks CHAD
I need to make the agitator stay fixed with the roast chamber as not to fall with the hot roasted beans when tipping out
And the bottom to connect to the drive shaft
I have 2 designs but they will need to be made on a CNC machine
Its preferable at this stage to see if I can find an off the shelf product
I like the design of the hot top cooling agitator but with larger and taller blades
KK
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| seedlings |
Posted on 08/06/2009 10:45
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Super Admin
Posts: 3056
Joined: 27.06.07
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OK, I understand what you're needing...
Again, from the breadmaker, attach the stirrer to an upside-down U-shaped piece, which will fit down on a T-shaped shaft and rotate.
CHAD
seedlings attached the following image:
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"You know, I think that horse is getting deader." |
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| Koffee Kosmo |
Posted on 08/07/2009 00:03
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Super Admin
Posts: 622
Joined: 31.12.08
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I am trying to source Allen Key shoulder bolts that are suitable as I don't need a long shoulder only 2mm
See drawing
KK
Koffee Kosmo attached the following image:
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koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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Posted on 08/07/2009 04:53
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Super Admin
Posts: 3056
Joined: 27.06.07
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Only trouble I see with the allen head is there's little room for error to get it seated correctly.
CHAD
"You know, I think that horse is getting deader." |
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| Koffee Kosmo |
Posted on 08/07/2009 05:26
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Super Admin
Posts: 622
Joined: 31.12.08
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Yes agreed on the concern CHAD
The new design will have a short drive shaft max 2 inch & passing through a loose but snug hole so it wont wobble out of centre
And all roasting pots are self centring
Still looking for other suggestions that don't require a CNC machine 
KK
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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Posted on 08/07/2009 08:12
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Super Admin
Posts: 3056
Joined: 27.06.07
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What about a couple of large wingnuts?
CHAD
seedlings attached the following image:
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"You know, I think that horse is getting deader." |
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| rcwarship |
Posted on 08/07/2009 11:24
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1/2 Pounder
Posts: 112
Joined: 22.04.09
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If you can't source a short 2mm shoulder, how about a length of tube cut for a spacer?
An example of what I'm trying to convey: if you have a 8mm shoulder, cut a 6mm spacer which leaves the 2m available.
Not an ideal solution, but if you can't get the 2mm...........
Jon
Tell me and I forget, show me and I remember, involve me and I understand. |
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| Koffee Kosmo |
Posted on 08/07/2009 18:27
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Super Admin
Posts: 622
Joined: 31.12.08
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rcwarship wrote:
If you can't source a short 2mm shoulder, how about a length of tube cut for a spacer?
An example of what I'm trying to convey: if you have a 8mm shoulder, cut a 6mm spacer which leaves the 2m available.
Not an ideal solution, but if you can't get the 2mm...........
Jon
Yes a spacer would be my next path to take
On Monday I will go to a specialist bolt retailer to check out there offerings
I have configured a gearbox & motor with a 6mm sq drive alloy casing, steel and brass gears
KK
Koffee Kosmo attached the following image:
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Edited by Koffee Kosmo on 08/07/2009 18:41
koffeekosmo.com.au I home roast and I like it
Bezzera BZ40:BNZ MD74 Grinder: 7 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
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| John Despres |
Posted on 08/08/2009 11:30
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Super Admin
Posts: 1390
Joined: 09.01.08
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Koffee Kosmo wrote:
I have configured a gearbox & motor with a 6mm sq drive alloy casing, steel and brass gears
KK
Sheesh! This is great! All you guys with all your abilities make my Junk Yard Tow Truck .5Kilo roaster look like a, well, junk yard tow truck...
I bow in your general directions!  I'm not worthy!
John
Fade to black coffee
John Despres
Fresh Roast 8, Gene Cafe, JYTT 1k, Mazzer Mini, Technivorm, various size presses and much more. |
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Posted on 08/09/2009 16:13
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Super Admin
Posts: 3056
Joined: 27.06.07
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Um, John...
We don't have a genecafe!
CHAD
"You know, I think that horse is getting deader." |
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thanks for your patience and support!
