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NewBean
06/12/2019 3:57 PM
Just waiting on my TC4 shipment then it's roasting time

snwcmpr
06/03/2019 11:37 AM
I rarely purchase roasted coffee. I just ordered 4 bags from Mountain Air Roaster.

tm97
05/30/2019 12:34 PM
Hi, I use a wok with a glass lid for roasting. shaking the wok is a good exercise, actually.

NetriX
05/29/2019 9:08 PM
morning

snwcmpr
05/27/2019 1:56 AM
Kenya Nyeri Katogoto

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Bobby M15's drum
BobbyS
homeroaster wrote:

This roaster is awesome. I love the workmanship and the thought you put into it.


Thank You! It's a lot of fun to do one!
 
homeroaster
BobbyS wrote:

Interesting thing I found out about heat in my drum roaster. I have perforated steel as the back of the drum and pull air through in the normal way with a blower.

What I stumbled onto today while preheating for roasting is drum RPM vs temp. On my roaster, drum RPM controls heat through the drum to a certain amount. I am thinking at a higher RPM the holes in the perf steel on the back of the drum become more "open looking" to the heated air going through than when slower.

As the drum ET goes up, to a certain temp, the temp will level off and I can speed the drum up a bit and the heat will then again rise until it levels off.

I find it interesting that I can keep increasing drum RPM and increase heat inside the drum as well at the same gas setting.

My roaster is much less sophisticated, but when I went from a 32 RPM Motor to a 59, the Roasting time decreased. I just assumed I was adding more energy in the form of agitation, which aided in the process of heat transfer.
*********************
Ed Needham
"to absurdity and beyond!"
http://www.homero...
http://www.facebo...EdNeedham1
*********************
 
http://www.homeroaster.com
BobbyS
homeroaster wrote:

BobbyS wrote:

Interesting thing I found out about heat in my drum roaster. I have perforated steel as the back of the drum and pull air through in the normal way with a blower.

What I stumbled onto today while preheating for roasting is drum RPM vs temp. On my roaster, drum RPM controls heat through the drum to a certain amount. I am thinking at a higher RPM the holes in the perf steel on the back of the drum become more "open looking" to the heated air going through than when slower.

As the drum ET goes up, to a certain temp, the temp will level off and I can speed the drum up a bit and the heat will then again rise until it levels off.

I find it interesting that I can keep increasing drum RPM and increase heat inside the drum as well at the same gas setting.

My roaster is much less sophisticated, but when I went from a 32 RPM Motor to a 59, the Roasting time decreased. I just assumed I was adding more energy in the form of agitation, which aided in the process of heat transfer.


I think what may happen: speeding up the drum keeps beans in the air a bit longer which in turn gives them more convection heat. Each roasting machine is probably different in the ratio of convection to conduction heat due to design. Roasting beans is a very interesting endeavor.
Edited by BobbyS on 05/12/2019 10:54 AM
 
BobbyS
Here are some consolidated photos of my bean roaster under construction. I am putting this up so folks do not have to go back to square one (post 1) if they want to see some photos.


https://imgur.com...
 
homeroaster
The more I see, the more awesomer it gets!BBQ grill
*********************
Ed Needham
"to absurdity and beyond!"
http://www.homero...
http://www.facebo...EdNeedham1
*********************
 
http://www.homeroaster.com
BobbyS
Thanks !!
 
allenb
Very nice indeed! Looking forward to seeing a video showing beans tumbling out into the cooling tray.
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
BobbyS
allenb wrote:

Very nice indeed! Looking forward to seeing a video showing beans tumbling out into the cooling tray.


Thanks Allen!

Do we post a video the same as a photo? I wasn't sure if we could post videos.
 
allenb
Here you go

VIDEO'S:

You tube videos in my post:

Find the URL for the YouTube video you wish to embed. Find the ID of that video (whatever is after the v= in the URL. Let's say the ID is vr3x_RRJdd4 (which is the ID of a video for the Free Hugs Campaign)
Then you would enter the following into your post to embed the video:
PHP Code:

Please note that some browsers (Android) do not support Flash player and the video will not be seen with the [youtube] tag. Use the [video] tag instead with the full address of the video:
[video]http://www.youtube.comvr3x_RRJdd4[/video]
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
BobbyS
Thank you sir!
 
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