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10/15/2021 2:19 AM
merlot85, maycondelpiero and hoeltz, Welcome !

10/14/2021 10:06 AM
Thanks for the addition to the group. Seriously considering building a drum roaster along the lines of oldgrumpus's. Love the design and craftsmanship.

10/14/2021 4:00 AM
Morning, ar3mia ! and... coffee drink

10/12/2021 11:55 AM
Evan Slack and CupOfJoe, Welcome !

10/07/2021 3:24 AM
Larry140, Roastiva and fkrauthan, Welcome !

In Memory Of Ginny
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SC/GG Build...Twin Walled?
LongLeafSoaps
Hi there, new member here & tired of roasting 1/2 cup at a time in my hot air popper. =)

I have been assembling an assortment of pieces/parts to begin a drum roaster, but in the meantime I decided to start off with a SC/GG turbo oven style roaster.

I picked up my stir crazy and my galloping gourmet turbo oven at a local Salvation army, the stir crazy was $4.99, and the GG turbo oven was $7.99, perforated bowl $2.99 at Goodwill... a bargain in my books!ThumbsUp

I am going to attempt a double wall construction for chaff collection purposes (at least that is the theory). I started off with making up a cooling tray. I will add a down drafting fan to the underside, beneath the perforated bowl.

Okay, I guess I need to resize my photos...I will revise here shortly =)
Carpe Diem With Coffee
LongLeafSoaps
I think I will add a stirring arm assembly from another SC I spied in a Goodwill the other day..I knew I should have bought it when I saw it!
LongLeafSoaps attached the following images:
cooling-pan-7.jpg cooling-pan-2.jpg cooling-pan-6.jpg cooling-pan-4.jpg

Carpe Diem With Coffee
LongLeafSoaps
Here are my Stir Crazy base, and Galloping Gourmet turbo oven...
LongLeafSoaps attached the following images:
stir-crazy-base-1.jpg galloping-goumet-to.jpg

Carpe Diem With Coffee
LongLeafSoaps
and pictures showing the double wall design that I hope will capture chaff...

The vent screens (3) are on the outer ring. I drilled smaller holes in the inner ring in hopes the chaff will find its way out and be trapped by the outer ring. I will post a picture of the inner ring later...
LongLeafSoaps attached the following images:
vent-screen-2.jpg vent-screen-1.jpg stir-crazy-base-2.jpg double-wall.jpg

Carpe Diem With Coffee
Koffee Kosmo
Hi and welcome LLS

Your question about chaff seperation
The way I see it - the centre liner should be lower than the outer liner by about 1 inch
In these designs the chaff flies about quite high but needs to have a negative pressure at the top so the chaff climbs over the lip and fall down on the other side like a waterfall

KK
I home roast and I like it. Designer of the KKTO
Roaster Build information
https://forum.hom...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.
LongLeafSoaps

Quote

Koffee Kosmo wrote:

Hi and welcome LLS

Your question about chaff seperation
The way I see it - the centre liner should be lower than the outer liner by about 1 inch
In these designs the chaff flies about quite high but needs to have a negative pressure at the top so the chaff climbs over the lip and fall down on the other side like a waterfall

KK


This is what I was thinking for the inner ring...I may have to drill more holes in the inner ring to allow for more chaff to get through.

I was thinking the positive pressure inside the roaster along with the 3 screened holes in the outer ring, that the chaff, being so light, would follow the air flow out towards the outer ring....
LongLeafSoaps attached the following images:
inner_ring_1.jpg inner_ring_2.jpg inner_ring_3.jpg

Carpe Diem With Coffee
LongLeafSoaps
This is how I am addressing the plastic stir arm eventual melt down...

I cut wool felt circles and stacked them inside the copper cap, attached to the inside of the lid and the threaded shaft, with Permatex Ultra Copper RTV silicone (rated for 700 degrees intermittent).

Wool does not burn, and is highly insulating, so I am hoping it will keep the plastic threaded shaft insulated from melting...
LongLeafSoaps attached the following image:
copper_shaft_cap_1_sm.jpg

Carpe Diem With Coffee
LongLeafSoaps
I will eventually attach the inner and outer spacer rings together, and then drill and pop rivet the outer spacer ring to the Stir Crazy base.

I thought about incorporating a dump shute opening of sorts into the base of the Stir Crazy, so my roasted beans can just get pushed by the stirring arms into the cooling tray without having to pick up the Stir Crazy base. I would just make a sliding lever to open up a pie shape in the Stir Crazy base. I already gutted the heat ring from the innards of the Stir Crazy base...

Seems like a lot of work though..I don't know, feeling kinda lazy with this idea, and it may not work as well as I think.

What do you guys think?
Carpe Diem With Coffee
Koffee Kosmo

Quote

LongLeafSoaps wrote:

This is what I was thinking for the inner ring...I may have to drill more holes in the inner ring to allow for more chaff to get through.

I was thinking the positive pressure inside the roaster along with the 3 screened holes in the outer ring, that the chaff, being so light, would follow the air flow out towards the outer ring....


You can only experiment and see how it works - a lot of this is trial and error
Also test for good mixing agitation of the beans - ideally you want to have the beans in a constant rolling motion Not just pushed around in one mass

Have a look at my YouTube video I posted on the Koffee Kosmo roaster for visual guidance
https://www.youtu..._ewkisDF5o

What you don't want is this agitator action
https://www.youtu...4dpvLwOUjQ

KK
I home roast and I like it. Designer of the KKTO
Roaster Build information
https://forum.hom...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.
LongLeafSoaps
Crap! Lost my whole post...won't do that again.....sigh.......... Shock


Okay...blah-blah-blah...Stir arms definitely need revised, they churn great with a full pound of greens, but not so much with the 1/2 cup of beans I roasted tonite...very uneven roast, and it tasted like Maxwell House..blech! >.<
I will do a comparison roast using the same beans in the air popper tomorrow, I think I ran out of steam for the night...

I deburred the holes in the inner ring, after the roast, and added a bit of "cheese grater" effect to them.

Pic 1 & 2: Chaff removal system after roasting 1/2 cup of beans, pic 2 shows inner ring removed for clarity.

Pic 3 & 4: Chaff removal system after running the SC/GG with just the chaff from afore mentioned roast for 10 minutes- no beans, pic 4 shows inner ring removed for clarity.

I think the twin wall chaff removal system worked great ThumbsUp
LongLeafSoaps attached the following images:
chaff_1_1.jpg chaff_2.jpg chaff_round_2-1.jpg chaff_round_2-2.jpg beans_blech.jpg

Carpe Diem With Coffee
LongLeafSoaps
Oh, hey..forgot to mention an important point: There was no chaff found outside the roaster afterwards!!! Roflmao
Carpe Diem With Coffee
Koffee Kosmo
LLS

I leave my roasted beans to rest and degas for a min of 5 days, sometimes longer depending on variety

So give the little fellas some time to degas and try tasting again

KK
I home roast and I like it. Designer of the KKTO
Roaster Build information
https://forum.hom...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.
ginny
where is it?


if you think you may write a long post do it offline or on a note pad on your computer
so you have it when that happens...

done it way too many times and it sucks...

that said, where is the chaff? mystery...

-g


ah you recycle into soap...
LongLeafSoaps

Quote


You can only experiment and see how it works - a lot of this is trial and error
Also test for good mixing agitation of the beans - ideally you want to have the beans in a constant rolling motion Not just pushed around in one mass

Have a look at my YouTube video I posted on the Koffee Kosmo roaster for visual guidance
https://www.youtu..._ewkisDF5o

What you don't want is this agitator action
https://www.youtu...4dpvLwOUjQ

KK


Thanks for the links KK =) I did see your video the other day while cruising on youtube, I like your set-up, and that is some serious bean agitation!!!

I went with an overhead stirring arm set-up to keep from just pushing the beans around in a circle (like video #2). I may try cannibalizing a silicone baking dish I'm not using to fashion some "sweeps" for my stirring arms instead of the pieces I have on the arms now...
Edited by LongLeafSoaps on 10/16/2015 9:14 PM
Carpe Diem With Coffee
Koffee Kosmo

Quote

ginny wrote:


that said, where is the chaff? mystery...

-g


ah you recycle into soap...


I believe that LLS meant and if I read it right - that its a clean roaster with chaff collected inside the roaster and no chaff was on the roasting bench outside

KK
I home roast and I like it. Designer of the KKTO
Roaster Build information
https://forum.hom...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.
LongLeafSoaps

Quote

Koffee Kosmo wrote:

LLS

I leave my roasted beans to rest and degas for a min of 5 days, sometimes longer depending on variety

So give the little fellas some time to degas and try tasting again

KK


Honestly, I haven't tasted much difference between degassed and not degassed... (I just ducked!!!)

The beans I roasted tonite I am not that fond of to begin with...
Carpe Diem With Coffee
LongLeafSoaps

Quote

Koffee Kosmo wrote:

Quote

ginny wrote:


that said, where is the chaff? mystery...

-g


ah you recycle into soap...


I believe that LLS meant and if I read it right - that its a clean roaster with chaff collected inside the roaster and no chaff was on the roasting bench outside

KK


YES! ThumbsUp
Carpe Diem With Coffee
ginny
ok just having some fun with you two...


enjoy your respective weekends...


hugs,

ginny


roar
LongLeafSoaps

Quote

ginny wrote:

where is it?


if you think you may write a long post do it offline or on a note pad on your computer
so you have it when that happens...

done it way too many times and it sucks...

that said, where is the chaff? mystery...

-g


ah you recycle into soap...



ginny.....hmmmm....you may be onto something there ;-D
Carpe Diem With Coffee
LongLeafSoaps

Quote

ginny wrote:

ok just having some fun with you two...


enjoy your respective weekends...


hugs,

ginny


roar


In all seriousness..the chaff in soap would probably create a nice gentle scrub...coffee grounds on the other hand...OUCH!!!
Carpe Diem With Coffee
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