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snwcmpr
11/27/2019 11:44 AM
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KKTO - My Humble Turbo Roaster
GaryatGala
Emm. I am a shy one Ginny. I think i'm exactly halfway round on the other side of the world from the coffee growing country of Costa Rica to Australia, and i'd advise against swimming across to our shark infested waters lol.
Seriously it would be great to exchange ideas and experiences if we had bundles of cash or a teleporting machine.

Have sent John an email.

Pic of roaster yes, pic of myself, noo. Vely shy i tell you.

Certainly KK i got friends who order from me too apart from the regular order from the restaurant.

Some weeks it's 6-7 kilograms (i'll leave others to convert that to pounds), others it's 2-3 kg. Go the backup coretto, but it's gathering dust with spiders making their home in there...so that shows how strong the KKTO is.

A bit like a car that is a bit over engineered to last the distance. ThumbsUp

I'm a simple bloke JackH.

I once tried to drill a hole on the side of the KKTO in order to insert a thermoprobe, but i gave up when the drill bit failed to make a dent.

Currently i'll be happy to dremel some slits on the roasting chamber for more effective chaff removal.
Edited by GaryatGala on 11/14/2012 4:33 PM
Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
Koffee Kosmo
Just a quick post
Adding another type of agitator design for flexible & different diameter size perforated insert pots

Its built by utilizing the wire sections of a whisk normally used in kitchens
Just cut to suit the diameter of any individual perforated insert

Method
Drill two holes in the lower portion and center of the shaft approx 1 cm apart ( its not critical so judge as to your design needs )
Feed the wire into the holes
Secure with a plate or similar (see video)
I have placed a spring to secure the tails of the wire sections for a neat job
Shape it like a butterfly's wings for best results

[video]http://www.youtube.com/watch?v=wTFjn3SA3eM[/video]

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
JackH
Looks good KK, I am going to try it on mine sometime.

--Jack
---Jack

KKTO Roaster.
 
Koffee Kosmo
JackH wrote:

Looks good KK, I am going to try it on mine sometime.

--Jack


The best thing about the design is that its
1) infinitely adjustable
2) infinitely flexible

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
GaryatGala
Due to demand from friends and the restaurant as well as working as a barista, time is of the essence.

The roaster is now plugged directly to the wall, and the heat guard has four holes to allow more direct air flow and heat.
Full heat warm up, then full heat throughout the roast til the end without burping for a steady rate of rise. Cant get any easier than this.

Inspiration was drawn from KK,s modification to his roaster mentioned in another forum.

It now roasts 1kilograms (2.2 pounds) that results in a smooth and balanced (if stopped just before second crack) flavour with a tendency towards a heavier body.

So anyone who wants to increase their roasting capacity on the KKTO should try the heat guard
Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
GaryatGala
For some reason attachments are not able to be uploaded,try as I may after a number of attempts.
My apologies. thumbdown
Edited by GaryatGala on 07/31/2015 2:02 AM
Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
JackH
Hi Gary,

Image file size should be 268K (800X800) or under and no spaces in the file name.

If you are still having trouble please PM me and I would be glad to help.

Look forward to seeing your KKTO roaster!
---Jack

KKTO Roaster.
 
ginny
Gary,

we are here to help just shout out or PM one of the crazy admins around here including me...

we want to see them pictures...

we were all shy before we got here; this place changes you.


ginny

roar
 
Koffee Kosmo
Good to see you pushing the boundaries of the design Gary

Keep us in the loop and don't forget I am always here to help with " out of the box ideas "

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
GaryatGala
Hiya Jack. Thanks for the heads up.

What I did was I took the photos on the smartphone which means the images are in full high definition (over 2 mb each).
So my solution was to send them to the Dropbox app ( and what a wonderful app it is. Whenever I log into my desktop which also contains the Dropbox app, it automatically receives the images) and then resize them to fit, which in this case was reduced to 800x600 each.

Here is an image of the very rough neanderthal type hack of the heat guard with a oversized drill bit. The holesaw I tried simply heated the metal to molten which means it makes it even harder to make a hole!
GaryatGala attached the following image:
20150718_130759_medium.jpg

Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
GaryatGala
Here is the roaster in operation with the glow of the halogen light at work.

You can see it plugged directly to the wall. Previously it was plugged via extension cable, which seems to reduce the voltage.

Insulation is a quadruple fold of a fire blanket held in place with steel wire.

As mentioned before, preheated at full heat til the halogen cycles on and off a few times before putting the beans in and then, let it roast at full heat and dont touch it until the roast is done to one's liking.
It's only til close to the end when I take out quick visual samples before dumping onto the cooler.

The result is a great drinking coffee which should satisfy most except for those with a third wave bent who prefers short profiles.
GaryatGala attached the following images:
20150718_130959_medium.jpg 20150718_124302_medium.jpg

Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
JackH
Nice work Gary, I was wondering how well the halogen version of the turbo oven worked. I use the solid heating element type.

Long ago I removed my heat shield and "forgot" to put it back. It is mostly there for consumer safety (keep fingers from the fan blades and the heating element). It does give you a bump to the heater power if removed or vented like you did.

Insulation of the outer chamber is very important too. I use a double wall (pan in a pan) with insulation between and underneath the pans and a removable roast chamber insert as used in the KKTO design. I am limited to 800g because of my smaller roast chamber insert but could expand it if needed.
---Jack

KKTO Roaster.
 
Koffee Kosmo
For safety reasons I can't recommend removing the heat shield so came up with an acceptable and safe way for all users to get more heat to the beans via fan force heated air

As the designer I need to be cautious with everyone's safety

So the modification can be several holes or just one large one to the heat shield
With the glass encased halogen element it's more delicate and susceptible to damage via bumps. So it needs to have a little protection from the guard

This is the Heat / Fan shield mod


KK
Koffee Kosmo attached the following images:
imagejpg_thumb.png imagejpg_thumb-2.png

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
GaryatGala
You,re welcome Jack.

Koffee Kosmo is the best person to respond to the halogen versus element situation since he has played with both.
I found the halogen oven to be useful because the light from the halogen enables one to see the beans during the roasting stage.

I did have one oven die on me because the heat shield was removed completely and that would have compromised it's reliability.
The blue silicon tubing also bubbled up due to the harsh direct heat. So, as far as reliability is concerned, it would be better if the shield is left on and modifications via holes is recommended.


A big hole in the center of the heat guard could perhaps work well too since air flow would be improved but without harsh effects from the halogen.

I have a spare heat shield from the blown turbo oven, so I will try and make a big hole in the center, see the results and give feedback.
Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
JackH
The Sunpentown SO-2000 turbo oven I use is about 3 years old. It uses a solid heater.

I agree that adding holes to the heat shield it is much better way to bump up the heat and still protect the halogen lamps. For my viewing, I use a small lamp to shine through the turbo glass. It is getting harder to see the roast so time for a cleaning.

It is very important to open the turbo oven and clean inside every so often. The fan draws oily/chaff roaster air inside and can get clogged.
---Jack

KKTO Roaster.
 
baysidedweller
I also use the Sunpentown oven, but the one I have uses far infrared nano carbon fiber heating element that responds very quickly. Also, like halogen, it glows orange red
There are 2 models: SO-2002 which is discontinued and the other one still in production is the SO-2007 and sunpentown's website:

http://www.sunpen.../coov.html
Edited by JackH on 08/06/2015 2:02 AM
 
GaryatGala
For cleaning oven glass, Simple Green General Purpose cleaner works very well. Is non toxic and smells ok.
Works even better when the glass is slightly warm after roasting and a quick wipe with a disposable paper kitchen towel.
I think USA residents can get it at Walmart.
Another member of the KKTO rider's club, together with coretto, FZ-RR700 Baby Roaster and a sad sack of less than 20 kilograms of greens.
 
Koffee Kosmo
A stainless steel scrub budd with a little detergent is best
Do a section at a time and wipe dry
Then polish to a clean see through surface

Take care not to allow water to enter the TO electrics

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
JackH
On the glass lid, I use a single edge razor to scrape off the heavy buildup and then follow up with simple green/scotch brite pad.

I was also referring to cleaning the inside of the turbo oven housing. After several months, it looks like a moonscape of chaff. A vac of this area is a good idea once in a while.
---Jack

KKTO Roaster.
 
Koffee Kosmo
JackH wrote:

On the glass lid, I use a single edge razor to scrape off the heavy buildup and then follow up with simple green/scotch brite pad.

I was also referring to cleaning the inside of the turbo oven housing. After several months, it looks like a moonscape of chaff. A vac of this area is a good idea once in a while.


Jack
For the inside - The easiest method is compressed air

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
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