topbanner.gif
Login
Username

Password




Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Shoutbox
You must login to post a message.

renatoa
08/13/2022 1:06 AM
Welcome, @tombull !

renatoa
08/10/2022 1:56 AM
nguyencoffeesupply
and RoyB, Welcome

renatoa
08/06/2022 1:31 PM
Welcome, oak202, CoffeeNutZ and Mlcharlestonsc

Strangeworth
08/04/2022 9:34 PM
Thank you!

renatoa
08/03/2022 2:09 AM
Strangeworth and BigPalm, welcome to forum

In Memory Of Ginny
Donations

Latest Donations
dmccallum - 10.00
JackH - 25.00
snwcmpr - 10.00
Anonymous - 2.00
Anonymous - 5.00
Users Online
Guests Online: 7

Members Online: 0

Total Members: 7,628
Newest Member: tombull

View Thread

Who is here? 1 guest(s)
 Print Thread
KKTO - My Humble Turbo Roaster
mtbizzle
KK, have you ever seen a roaster like this?

https://www.youtu...sxttg2N6P4

It is a 14cm diameter x 18cm long drum that I believe holds 1#.

It reminds me of your build -- TO on an insulated pot with an agitation mechanism.

I'm curious what you think of the possibility of putting such a drum with a motor into something like your build.
Roast: Kaldi wide, SR800 + projects
Grind: Lab sweet, Bentwood, giota w/ MP burrs, Commandante
Pull: Decent, La Pavoni, Elektra Microcasa a Leva, Faemina anno 60, Kim Express
 
Koffee Kosmo

Quote

mtbizzle wrote:

KK, have you ever seen a roaster like this?

https://www.youtu...sxttg2N6P4

It is a 14cm diameter x 18cm long drum that I believe holds 1#.

It reminds me of your build -- TO on an insulated pot with an agitation mechanism.

I'm curious what you think of the possibility of putting such a drum with a motor into something like your build.


Yes my friend that lives in the next suburb and I have built a drum KKTO about 8 years ago
He is also a mechanical engineer- and he still uses it to this day

I originally built a hybrid KKTO that uses two heat sources for him TO on top Electric fry pan under but he wanted a drum roaster version
So we just built one - but it?s not a build for a novice

Be aware that he and I have posted about the drum roaster on other forums or social media - and I have posted drawings of many different versions Including a twin TO drum roaster going back 10 years

This photo is the proof

i.postimg.cc/qNnLbRsd/39318244-A6-EF-40-BE-839-E-1-C3864-E20580.jpg

KK
Koffee Kosmo attached the following image:
dd1ee8aa-9b05-47a6-897d-6ac16ce28b8d.jpeg

I home roast and I like it. Designer of the KKTO
Roaster Build information
https://homeroast...ad_id=1142

https://docs.goog...lide=id.i0
Blog - http://koffeekosm...gspot.com/

Bezzera Strega, Mazzer Robur Grinder, Pullman Tamper Convex,
(KKTO) Turbo Oven Home Roaster.
 
renatoa
Been there, did that, forget it.
Not able to roast even 330g satisfactory, the pot is too big, you need 14 litres at least to accommodate that drum, too much volume, not enough heat, but my insulation wasn't so elaborate as in the video. Used exactly same basket as in the video.
KK picture shows a much smaller drum and "square" than in the video, just compare with the heater plate diameter, which is 18 cm. Probably the oven was been smaller accordingly.

Thought that agitation wasn't enough, so tinkered a diagonal paddle, Gene style, no benefit, still hard to have FC near minute 12 with 330 grams.
250g is where I should stop, at least for my pickiness.

Plus, charging and drop is very difficult to do with from mesh basket, I mean handling when hot.

My setup included a hot air probe, routed inside through one of the (hollow) shafts of the basket.
ET inside basket wasn't ever bigger than 230 C, when the lid thermostat was been set to 250 C, which explains the lack of load capabilities.

The basket indeed might hold one pound, volume is 2.77 litres, compared to Gene 1.5 litres (16x11 cm), but the issue is temperature... Gene blows hot air at 300 C, from a 900 Watt heater, in a much smaller volume.
Maybe if you can build some inner walls in the pot, to reduce volume just to the space needed for basket, this way could work.
But, as KK wrote, too much tinkering compared to a KKTO or SCTO build, that roast one pound happily in right time.
Edited by renatoa on 06/05/2020 4:22 AM
 
JackH
Isn't tinkering what we do?
---Jack

KKTO Roaster.
 
Koffee Kosmo
I should have mentioned that we can roast up to 1 KG in that KK Drum roaster - as it uses the same components and the specified volume I have set down as the original roaster

Anyone can tinker with mechanical characteristics but not the volume that needs to be strictly adhered to
And also the agitation needs an action that mixes and rolls the beans - not just to be pushed around in circles

KK
I home roast and I like it. Designer of the KKTO
Roaster Build information
https://homeroast...ad_id=1142

https://docs.goog...lide=id.i0
Blog - http://koffeekosm...gspot.com/

Bezzera Strega, Mazzer Robur Grinder, Pullman Tamper Convex,
(KKTO) Turbo Oven Home Roaster.
 
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
My 1-2 KG drum roaster Drum Roasters 8 08/09/2022 11:57 PM
My U.A.F. hot air roaster (Dedicated to renatoa) Fluidbed Roaster 4 07/22/2022 3:03 PM
1-6 lbs Roaster Build - Nothing Fancy Drum Roasters 26 06/21/2022 3:52 AM
Waiting on my Roaster and beans. Roasting Coffee 4 06/21/2022 3:44 AM
Any roaster that doesn't trigger smoke alarm when used inside? Drum Roasters 3 06/20/2022 3:10 PM
Homeroasters Association Logo, and all Content, Images, and Icons © 2005-2016 Homeroasters Association - Logos are the property of their respective owners.
Powered by PHP-Fusion Copyright © 2022 PHP-Fusion Inc
Released as free software without warranties under GNU Affero GPL v3
Designed with by NetriX