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KKTO - My Humble Turbo Roaster
Degull
I'm in the process of building my own as well. Very nice work. Any chance you can sell me just the turbo oven adaptor ring?
 
Koffee Kosmo
Degull wrote:
I'm in the process of building my own as well. Very nice work. Any chance you can sell me just the turbo oven adaptor ring?


Hi Degull

Thanks for the enquiry
Yes all are available for purchase now
* Can purchase any individual part required *

Base & agitator from January 2010

* Please Note *
The steel fabrication part of the kit is hand made in Australia
And all kit items are in stock & despatched from Brisbane Australia

* Can purchase any individual part required *

The kit consists of
1) The Turbo oven adaptor ring (for min pot size of 240mm)
2) Dual purpose insulation liner & volume reducer
3) Geared Motor 12volt X 68 rpm @ 5kg per centimetre
4) Agitator
5) Base/hub , this can be used with my motor, also with most small geared motors and car window winder motors
6) Ceramic insulation 6mm


I will be putting up some more photos soon of the full set up

KK
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
seedlings
I have been looking at thrift stores and department stores for over a year now and have yet to find a turbo oven or it's equivalent. Are they an Australian product?

CHAD
Roaster: CoffeeAir II 2# DIY air roaster
Grinder: Vintage Grindmaster 500
Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover
 
Koffee Kosmo
seedlings wrote:
I have been looking at thrift stores and department stores for over a year now and have yet to find a turbo oven or it's equivalent. Are they an Australian product?

CHAD


CHAD you know most products get there start in the US first

Try a search for Sunpentown Digital Convection Oven or Flavorwave Turbo oven

Some are Halogen/convection ovens
Some also come with Infrared

Degull & CHAD

Here is a drawing with measurements of the adaptor TO to Pasta Pot ring (click on image to get large view)

KK
Koffee Kosmo attached the following image:
adaptor_ring.jpg

Edited by Koffee Kosmo on 12/17/2009 2:46 AM
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
Koffee Kosmo
Update

I have put together a roaster kit
I have taken a photo for you to see the final product

That is one of the BETA testing units
Beta testing will continue till February 2010

More news will be posted when it comes to hand

KK
Koffee Kosmo attached the following image:
img_2090.jpg

Edited by Koffee Kosmo on 12/21/2009 11:13 PM
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
DavidG
seedlings wrote:
I have been looking at thrift stores and department stores for over a year now and have yet to find a turbo oven or it's equivalent. Are they an Australian product?

CHAD


CHAD,

I too searched for quite a while. My dear wife found a Galloping Gourmet model (used) on eBay for around $50. It looks maybe 5-10 years old or so. It, among other projects, is moving slowly on my workbench. They're out there -- happy hunting.

David
europiccola | yama + coryrod | chemex | AP | clever
wbp1 | wepp1 | bm/hg | co hybrid (still coming soon...)
 
Koffee Kosmo
UPDATE:

Agitator operation of the new kit roaster Dry run with green beans
Note the one brown bean that was added to view agitation & mixing. Bean mass is 600 grams

http://www.youtub...j1IQ8MtPWo

KK
Edited by Koffee Kosmo on 01/10/2010 11:03 AM
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
seedlings
Very even mixing - around, in and out. Very nice work.

CHAD
Roaster: CoffeeAir II 2# DIY air roaster
Grinder: Vintage Grindmaster 500
Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover
 
Koffee Kosmo
Here are some agitator photos and videos of the KKTO

It has taken a lot of my time to come up with an all round performer

Test one:
Single blade agitator with guide & softening spring fitted to bottom
http://www.youtub...21O5bED9NM

The beans used in this test are the worst graded beans I have ever had (small,med,large,broken,deformed,and some stones)
However they produce one of the best coffees I have tasted Sumatra Mandheling Takengon Organic 700gr

Test Two:
Double sided or full agitator blade & softening spring fitted to bottom edge

http://www.youtub..._ewkisDF5o

The beans used are PNG Elephant 700gr before roasting them today

The tension spring reduces noise, Its smoother running, Adjustment for height is not as critical, Alleviates occasional green beans that jamb under the blade

Watch the red and brown beans mixing motor speed @ 68 rpm


KK
Koffee Kosmo attached the following image:
img_2312.jpg

Edited by Koffee Kosmo on 03/23/2010 4:53 PM
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
John Despres
Very nice! I love the paddle designs.

John
Respect the bean.
John Despres
Fresh Roast 8, Gene Cafe, JYTT 1k, Quest M3, Mazzer Mini, Technivorm, various size presses and many more brewers.
 
www.sceneitallproductions.com
Koffee Kosmo
John Despres wrote:
Very nice! I love the paddle designs.

John


Thanks John
All individual parts (as per photos above) are available for sale for the DIY enthusiasts

One can make several types of roasters with just the base & motor
I myself have had over 20 design ideas

The web site is in set up stage for now

KK
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
Island Addict
Hey KK!

Looking good! How do I buy the parts? I starting building a roaster based on your inspiration last year, but got sidetracked by a bigger hobby -- massive restoration of a 36' sailing catamaran. Now the sailing is great, but the coffee needs work. Your parts are what I need to get the caffeine up to snuff.

Rob
Rob
 
Koffee Kosmo
Island Addict wrote:
Hey KK!

Looking good! How do I buy the parts? I starting building a roaster based on your inspiration last year, but got sidetracked by a bigger hobby -- massive restoration of a 36' sailing catamaran. Now the sailing is great, but the coffee needs work. Your parts are what I need to get the caffeine up to snuff.

Rob


I can organise the parts for you Rob
We made all the components in lots of 30 to keep costs down

It depends on what parts you need
Most people in the US are enquiring about the kit without the pots & Turbo Oven to save on postage and purchase the rest of the components close to home

KK
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
Koffee Kosmo
Latest Update

Web Site Launched
koffeekosmo.com.au

Over the last 7 months we have Beta tested the Koffee Kosmo kit roaster

The original design has stood the rigorous tests that 20 beta testers undertook
Some have posted there testimonials on the site

Only one small design change was made to the agitator from the original production run
And a couple of tweaks or enhancements

Its the simple things that can make something that's already good to something great

The only actual design change to the original is a dual blade agitator with springs

I would class the high temp silicone tubing to prevent the possibility of escaping heat as an enhancement


We have also strengthened the main drive gear to cope with extra stress

In conclusion the roaster works time and time again producing

Shop quality roasts of decent capacity [700 gr +]
Ability to do Back to back roasts [one beta tester did 6 back to back roasts]
Collects the chaff inside the unit so its not messy
The design can be used with a heat gun as the heat source
The base hub component can be used to make several alternative roaster styles

I am proud of this design and I wish to thank the Home Roaster / coffee enthusiast community that has helped & encouraged me to push on to produce a kit

Well its here now

Regards
KK



I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
allenb
Now you've got me curious.

A couple of questions on your TO roaster:

-In your original, the chaff made it's way through the perf holes. Is this still the case with the newest version with what seems to be much smaller holes?
If yes, to dump the chaff all you do is pull the two chambers apart and dump?

-Is it necessary to preheat and if yes, how long for optimum results?

-Does this design produce less smoke due to not pulling in makeup air/oxygen or close to the same as other roasters.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
Koffee Kosmo
Now you've got me curious.

A couple of questions on your TO roaster:

-In your original, the chaff made it's way through the perf holes. Is this still the case with the newest version with what seems to be much smaller holes?
If yes, to dump the chaff all you do is pull the two chambers apart and dump?


On the original roaster the chaff removal acts in a similar way to the new 2 pot design
approx 98% of the chaff is removed and settles on the bottom

Is it necessary to preheat and if yes, how long for optimum results?


I have used 3 different methods All result in professional looking roasts (I can email you the PDF of the 3 methods)

Does this design produce less smoke due to not pulling in makeup air/oxygen or close to the same as other roasters.

Allen


That depends on the depth of the roast,smoke is mostly dissipated from the exit holes of the Turbo Oven.

Smoke is a minor issue to City Roast stage. However smoke increases incrementally after rolling first crack to Vienna stage or beyond

It is not a fully closed system

If you want to read the 500 posts during the Beta testing of the kit roaster the link is inserted below
http://coffeesnob...1261484678

The KK web site has a lot of information as well

Regards
KK


I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
allenb
By "settles on the bottom", do you mean makes it through the holes and ends up in the secondary chamber?

I'll take you up on the PDF's. I'll send my email via PM.

Thanks,

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
Koffee Kosmo
Yes the chaff separates from the beans, then settles in the outer pot/chamber, when the chaff is in the outer chamber it remains separated from the roasting beans above (see photo)

You will also see in the photo
That I have engineered a special liner that slips in the outer pot
This liner holds in the insulation, reduces volume for better heat use, catches the chaff, insulates the sides

PDFs sent

KK
Koffee Kosmo attached the following image:
chaff_in_outer_pot.jpg

I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
allenb
Looks like a good chaff removing system.

If you don't mind, a couple more questions.

When cooling the beans with an external, fan powered setup, what's the procedure for getting the beans out of the roaster? Pull the convection top then grab the body, tilt and dump?

Are you aware of any qualitative testing done with convection plus applying heat to the bottom (like a stir crazy) versus convection only?

I'm sure these are repeat questions for you and I'll have to read all of the previous posts you linked me to and re-read Ed's build posts.

Thanks again for the PDF's,

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
Koffee Kosmo
The new design uses a 2 pot system
As it was designed to be a kit that combined manufactured parts & married to off the shelf parts

A stock standard Turbo Oven is used as the primary heat source

I utilise a 240mm Pasta Pot / Multi Cooker set

www.viners.co.uk/images/l_multicooker_2010.jpg

When cooling the beans with an external, fan powered set-up, what's the procedure for getting the beans out of the roaster? Pull the convection top then grab the body, tilt and dump?


1) Remove the TO heat source
2) Remove the top pot the perforated one and dump (its easy)
The shaft & agitator remains fixed to this section
3) The colander portion of the pot set can be used to make an external cooler
Everything is utilised B)


Are you aware of any qualitative testing done with convection plus applying heat to the bottom (like a stir crazy) versus convection only?


I can only explain about this system as the designer I am familiar with its inner workings.

I use engineered components & insulation
A high temperature silicone seal is also used to eliminate leaking heat on the 2 pot rim connection points
The measured heat at the sides of the pot after internal insulation @ 250 Cel is 75 Cel
For this reason I also use a fabric external insulation to further reduce heat loss

By minimising heat loss and having just the right volume there is no need to have another heat source

I also feel that the position of the roasted beans suspended in the centre of the heat chamber in a perforated vessel utilises the available heat more efficiently & effectively

My new system is tuned to roast 300 to 800 grams of green beans
Also the system has been used by others to roast 1kg +

Having said that the kit system can be configured with 2 heat sources with only the base hub (a bit of DIY required)
1) Utilising an electric skillet and a TO

I'm sure these are repeat questions for you and I'll have to read all of the previous posts you linked me to and re-read Ed's build posts.


Our systems differ in 3 ways
Ed - 2 heat sources________________ KK TO heat only
Ed - External chaff removal __________KK internal chaff removal
Ed - Beans roast on a solid floor ______ KK a perforated vessel


I have also spent countless hours fine tuning the agitator to have a complete mixing action rather than to push a mass of coffee beans around a bowl

The main purpose of the agitator shape is to mix the beans in a specific way that is to move the beans from the centre out and back to the centre again
The action also cycles the beans from top to bottom in a helix pattern while also allowing the beans some intermittent rest time

Hope that helps

KK
Edited by Koffee Kosmo on 09/13/2010 12:25 PM
I home roast and I like it
Blog - http://koffeekosm...gspot.com/
Bezzera Strega: Mazzer Robur Grinder: 5 Box hand grinders: Pullman Tamper Convex: (KKTO) Turbo Oven Home Roaster: CONA Glass Rod Syphon: Pyrex Brewer:
 
http://koffeekosmo.com.au
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