|
My Humble Turbo Roaster
|
| Koffee Kosmo |
Posted on 12/31/2008 17:09
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Hi this is my first post
Built during the days from Christmas and New Year 2008
It is a hybrid
1) turbo oven heat source, However a heat gun can also be used
2) Bean mass suspended in centre of chamber and is height adjustible
3) Fan forced action for even distribution of heat
4) Beans are in a perforated insert again for even heat distribution also the chaff will fall through the insert holes and collect in bottom of pot
5) Small footprint as it fits under the BBQ in the storage cupboard
6) Agitator is powered by a car window winder motor @ 42 rpm
Now onwards to do my first roast
I have a compilation of the build however if other photos are required please don't hesitate to ask
Thermocouple yet to be fitted
Koffee Kosmo
Koffee Kosmo attached the following image:
[38.42Kb]
Edited by Koffee Kosmo on 12/31/2008 17:23
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:10
|
Super Admin
Posts: 592
Joined: 31.12.08
|
More Photos
Koffee Kosmo attached the following image:
[59.15Kb]
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:11
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Next instalment of photos
The wing design agitator works beyond my expectations
The centre convex washer is from a car shock absorber
works well to keep beans away from the centre shaft
Koffee Kosmo attached the following image:
[66.39Kb]
Edited by Koffee Kosmo on 01/01/2009 15:58
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:12
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Building compilation
Koffee Kosmo attached the following image:
[84.78Kb]
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:15
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Trial run with green beans of the roaster just to make sure it performs as intended 
Koffee Kosmo attached the following image:
[1151].jpg)
[79.37Kb]
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:16
|
Super Admin
Posts: 592
Joined: 31.12.08
|
The roasters home when not in use
Koffee Kosmo attached the following image:
[60.25Kb]
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 12/31/2008 17:31
|
Super Admin
Posts: 592
Joined: 31.12.08
|
One mod I am forced to make due to some smaller bean varieties tend to get caught, or fall through the insert holes as the holes are a little to large
I intend putting another diffuser on the bottom of the insert to stop this from happening
KK
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| seedlings |
Posted on 01/01/2009 09:39
|
Super Admin
Posts: 2851
Joined: 27.06.07
|
Fantastic concepts! I love the idea of perforations and airflow through the beans. I've considered perforating the hopper in my breadmaker to allow the same airflow.
I do have one question about your sitrrer. From the picture, it looks like the thin cross section stirs the beans instead of the large flat part (see diagram). Does it mix the beans well?
Thanks for posting this beast!
CHAD
seedlings attached the following image:
[26.35Kb]
Edited by seedlings on 01/01/2009 09:40
"You know, I think that horse is getting deader." |
| |
|
|
| farmroast |
Posted on 01/01/2009 10:13
|
1/2 Pounder
Posts: 142
Joined: 20.12.06
|
Congrads s:2
I'm a great believer in turbo oven roasting. There's so much that can be done with this concept. Saw your posts on CS and was glad to see another turbo project.
enjoy!!!
Ed
Ed B.
DreamRoast 1kg roaster, Major, Olympia Cremina, Technivorm 741 http://coffee-roa...gspot.com/ |
| |
|
|
| Koffee Kosmo |
Posted on 01/01/2009 15:54
|
Super Admin
Posts: 592
Joined: 31.12.08
|
I do have one question about your sitrrer. From the picture, it looks like the thin cross section stirs the beans instead of the large flat part (see diagram). Does it mix the beans well?
Yes Chad it works a treat
It depends on the amount of beans you want to stir but in general it works like this
The lower portion of the design causes a welling of the beans
The beans are forced to spin and go through the open section and over the top when it dams up through to the other side
If you notice the design is full diameter on one side and 3/4 on the other
I think it gives it more balance and does not turn the beans to fast and furious to overload the design
The centre section is a socket reducer (from a cheap set) under is 1/2" top is 1/4"
I removed the ball bearing and drilled it through and bolted the wings on
Its like Mecano you can change it any time with ease if it doesn't work
Congrads smiley
I'm a great believer in turbo oven roasting. There's so much that can be done with this concept. Saw your posts on CS and was glad to see another turbo project.
enjoy!!!
Ed
I did however get a few ideas from your set up
Will I get more control with heat if I raise the bean mass closer to the the turbo
Thanks for the interest
KK
Edited by Koffee Kosmo on 01/01/2009 16:13
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| farmroast |
Posted on 01/01/2009 16:49
|
1/2 Pounder
Posts: 142
Joined: 20.12.06
|
I did however get a few ideas from your set up
Will I get more control with heat if I raise the bean mass closer to the the turbo
Thanks for the interest
KK
I started with a tall pot too and kept cutting it down which increased batch size. Smaller area to heat and less area to lose heat.
Ed
Ed B.
DreamRoast 1kg roaster, Major, Olympia Cremina, Technivorm 741 http://coffee-roa...gspot.com/ |
| |
|
|
| ginny |
Posted on 01/01/2009 17:42
|
Super Admin
Posts: 1460
Joined: 24.10.05
|
Kosmo:
Unbelievable guy.
Yet another take on a roaster that is awesome.
I guess we need to have another roaster building contest.
Thanks for posting this Kosmo.
ginny
s:2s:2s:2s:2s:1s:1s:2s:2s:2s:2
s:8
cuz I need too
Keeper of Xanadu, the last bohemian outpost!! |
| |
|
|
| Koffee Kosmo |
Posted on 01/02/2009 05:11
|
Super Admin
Posts: 592
Joined: 31.12.08
|
I started with a tall pot too and kept cutting it down which increased batch size. Smaller area to heat and less area to lose heat.
Ed
Hence the question
I can raise the roast bean mass closer to the turbo heater element by 2 inches by adding an extension to the drive shaft and lifting the two half moon brackets
And or this as well
A friend can get me some 1/4" aluminium plate off cuts for free
So I will make a false bottom rather than cut the pot down
Ideally I want to roast 600 grams comfortably but at the moment in the first roast I could manage 450 grams without to much trouble but may be the comfortable limit
Time to tweak c:1
Will report back on the next roast with height adjustment
But for the moment enjoy a picture of the first roast
450 gr of Panama Bouquet Baja Volcancito
KK
Koffee Kosmo attached the following image:
[1160].jpg)
[71.26Kb]
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 01/02/2009 05:19
|
Super Admin
Posts: 592
Joined: 31.12.08
|
ginny wrote:
Kosmo:
Unbelievable guy.
Yet another take on a roaster that is awesome.
I guess we need to have another roaster building contest.
Thanks for posting this Kosmo.
ginny
s:2s:2s:2s:2s:1s:1s:2s:2s:2s:2
s:8
cuz I need too
Thanks Ginny
I have plans on the drawing board for a 2 pound (1kg) drum roaster
Not a new idea but the construction is unique (I just hope no one has thought of it first 
KK
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| seedlings |
Posted on 01/02/2009 06:56
|
Super Admin
Posts: 2851
Joined: 27.06.07
|
Oh, I'm really going to have to look at perforating the bread machine...
Love your roaster all the way around!
CHAD
"You know, I think that horse is getting deader." |
| |
|
|
| farmroast |
Posted on 01/02/2009 07:08
|
1/2 Pounder
Posts: 142
Joined: 20.12.06
|
Hence the question
I can raise the roast bean mass closer to the turbo heater element by 2 inches by adding an extension to the drive shaft and lifting the two half moon brackets
And or this as well
A friend can get me some 1/4" aluminium plate off cuts for free
So I will make a false bottom rather than cut the pot down
Ideally I want to roast 600 grams comfortably but at the moment in the first roast I could manage 450 grams without to much trouble but may be the comfortable limit
that should help. I think your element is the 1200w size so 600gr. is a good amount for that amount of heat. The false bottom will give you a layer of insulation too.
Ed
Ed B.
DreamRoast 1kg roaster, Major, Olympia Cremina, Technivorm 741 http://coffee-roa...gspot.com/ |
| |
|
|
| Koffee Kosmo |
Posted on 01/03/2009 00:01
|
Super Admin
Posts: 592
Joined: 31.12.08
|
that should help. I think your element is the 1200w size so 600gr. is a good amount for that amount of heat. The false bottom will give you a layer of insulation too.
Ed
Thanks farmroast as I really felt that the volume of the pot was to large
you have answered and confirmed what my gut feelings told me.
It is not easy to get a large diameter pot that is also shallow
My turbo oven is rated 1200 - 1400w
farmroast
Do you have a drawing of your chaff remover / catcher
I have a design on one now but would like to see how you made yours
Many thanks
KK
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| dja |
Posted on 01/03/2009 00:16
|
1/2 Pounder
Posts: 150
Joined: 07.11.08
|
your local bakers store should have a goodly supply of cake pans in diameters up to like 24" and depths of 2 to four inches.
They work great but being aluminum they bleed heat faater then some people go thru money.
if life seems normal your not going fast enough!
M. Andretti |
| |
|
|
| Koffee Kosmo |
Posted on 01/04/2009 19:33
|
Super Admin
Posts: 592
Joined: 31.12.08
|
dja wrote:
your local bakers store should have a goodly supply of cake pans in diameters up to like 24" and depths of 2 to four inches.
They work great but being aluminum they bleed heat faater then some people go thru money.
Thanks dja
I did consider the baking pans/tins but found them to shallow
However I did use a baking tin for another purpose if you look at the build compilation (6) photos on the centre left image you will see that I cut the bottom of a round baking pan to act as a guide and to act as a self centreing device for the removable bean roasting insert so it can find the agitator shaft first time & every time
KK
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 01/06/2009 20:35
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Chad I know you have been interested on the agitator progress
Just putting up a simple mod for the agitator
The basic design works perfectly
However on some small roasts some beans have a tendency to rest on the flat surface of the top
I have noticed that if the volume of beans is 300 gr or below when I do sample testing, the beans don't overflow and occasionally some will rest on top
This is not a problem on larger quantities as the volume of the bean mass goes over and pushes all before them
The mod was made with a little sheet aluminium that is thin enough to be cut with scissors but strong (it is about 1/3 of a mm)
All I did was to shape it and fold it under
Now it looks like it came straight out of Star Trek
KK
Koffee Kosmo attached the following image:
[46.59Kb]
Edited by Koffee Kosmo on 01/07/2009 22:34
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 01/13/2009 05:24
|
Super Admin
Posts: 592
Joined: 31.12.08
|
Just keeping you in the loop
Here is an early short video of the early Turbo roaster tests before any mods
More videos to come of the finished roaster as soon as I put on my directors hat on
KK
Edited by Koffee Kosmo on 01/23/2009 22:30
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| seedlings |
Posted on 01/13/2009 11:50
|
Super Admin
Posts: 2851
Joined: 27.06.07
|
Hire James Cameron (or Tim Burton if you prefer) and let's see the full length version!
Very nice sneek peek. The perforations and airflow concept is just outstanding!
CHAD
"You know, I think that horse is getting deader." |
| |
|
|
| Brewster |
Posted on 01/13/2009 13:57
|
1/4 Pounder
Posts: 13
Joined: 27.03.08
|
Nice video, KK! Sometimes it doesn't come together until you see it in action...
That was a good looking roast!
Wendell
If the shoe fits, wear it.
If the shoe doesn't fit, you've the wrong shoe! |
| |
|
|
| Koffee Kosmo |
Posted on 01/14/2009 04:56
|
Super Admin
Posts: 592
Joined: 31.12.08
|
I have completed all the tests for the roaster and have reached my goal for 600grams of green beans
I am confident that it will roast up to 750grams in its current configuration (pot volume reduced by 1/3 with an insulated false bottom)
I am also confident that if I reduce the pot volume to half from the original the roaster will be capable to roast 1kg (2 pounds)
Just roasted today
600 grams of Kenya Ritti AA
Camera set on Macro and flash on
This is a beautiful and even roast
I also got goose bumps and a feeling of WOW what a roast
See photo
Also here is a link of another short 20 sec video on how the components fit together
NOTE
I have uploaded 4 short videos so to see all of them just click other videos from this user to view all
Most only go 30-35 seconds
I have learnt that the video quality degrades if one zooms in so I have to redo some others that did not make the cut 
Enjoy the video via this link
KK
Koffee Kosmo attached the following image:
[74.33Kb]
Edited by Koffee Kosmo on 01/23/2009 22:39
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
|
| Koffee Kosmo |
Posted on 01/14/2009 05:00
|
Super Admin
Posts: 592
Joined: 31.12.08
|
For some reason I could not attach the photo on my last post so here is a photo of that roast
I will try another image of the same roast just not as close up
KK
Koffee Kosmo attached the following image:
[73.64Kb]
Edited by Koffee Kosmo on 01/14/2009 05:13
I home roast and I like it
Bezzera BZ40:Mazzer Major Grinder: 7 Box hand grinders: Pullman Tamper Convex: Torr Tamper Flat: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer: |
| |
|
