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.

JackH
OnlineAdmin
· 06/24/2020 7:58 AM
@Mark McCornack, Please post your question in the forum.

Mark McCornack
Offline
· 06/15/2020 9:28 PM
Hi! Looking for a legacy inlet temp sensor on 13 yr old Gene Cafe. It seems they've changed it and now you need new mother board and new sensor. Any ideas where I can find compatibile old one? Mark

Samaniego
Offline
· 06/09/2020 6:39 PM
Wich thermometers Can i buy for my roasting machine compatible with usb or macbook?

JackH
OnlineAdmin
· 06/05/2020 5:38 PM
peveleth, It is better if you start a post in the forum with your question. These shouts go away in time.

peveleth
Offline
· 06/05/2020 3:10 PM
For Gene Cafe Roasters I have an older Gene Cafe Roaster. Temp fluctuates probably showing age. Question: For recent owners of the newer Gene Cafe Roaster, your opinions?

Users Online
Guests Online: 4

Members Online: 0

Total Members: 6,621
Newest Member: Jim Chiodo
In Memory Of Ginny
Donations

Latest Donations
Anonymous - 5.00
Anonymous - 5.00
renatoa - 2.00
JitterzZ - 2.01
renatoa - 2.00

View Thread

Who is here? 1 guest(s)
 Print Thread
Dereks 1-2Kg drum roaster build
btreichel

Quote

Lylabrown wrote:

I recommend swapping out the socket-cap screws that attach the vanes to the drum with button or round headed ones instead. The reason being that the beans have the uncanny ability to wedge themselves in any bean-width gap and stay there!


Good catch!
 
dmccallum

Quote

Lylabrown wrote:
Based on bad experiences I’ve had building various drum/vane configurations I recommend swapping out the socket-cap screws that attach the vanes to the drum with button or round headed ones instead. The reason being that the beans have the uncanny ability to wedge themselves in any bean-width gap and stay there until the next roast, or multiple roasts, before eventually freeing themselves and finding there way into the cup. Resulting in a bitter, nasty cup of joe!


Very good catch. Thx, I'll address that.

I turned my attention to the cabinet frames and how I was going to fix the skin. Came up with some brackets which I've welded up. They have 3mm sections in them so as to provide something to tap a thread. Had to rework the frame ribs to accommodate this.

i.imgur.com/pMnPs2D.jpg

i.imgur.com/UoDaI6V.jpg

i.imgur.com/S9cgR16.jpg

Was a bit cumbersome but have also put the inner chamber skin together. I might have to revisit this. It's made from 0.9mm stainless which difficult to TIG and I am not sure how it will stand up once running. Stainless warps when subject to heat so we'll see.
I've already adjusted the front and rear supports to 1.5mm and I may consider splitting the main skin into two parts that can be bolted together. The total length of the single piece is awkward to ship from the cutting shop.
Also I don't think the assy needs to be welded together - extra tabs that you can fold over will suffice and make it easier to put together.

i.imgur.com/1472yNl.jpg

i.imgur.com/8bvEILI.jpg
 
dmccallum
Got round to finishing the inner skin and mounted in the frame.

i.imgur.com/jt746Co.jpg

i.imgur.com/3SB1pGt.jpg

The rear plate hole for the drive shaft doesn't allow too much clearance so I've mounted a length of 5mm threaded rod which extends into a 5mm well I drilled into the rear plate. This should hold the assy in place in the event of any movement due to heat expansion/warping.

i.imgur.com/DoIUSKJ.jpg

i.imgur.com/5hC4kc6.jpg

i.imgur.com/ObZ74r4.jpg

The assy fits flush between the end and front plates exactly and clamps it up when they're bolted on.

i.imgur.com/B9Z743i.jpg

i.imgur.com/5Ymbday.jpg

i.imgur.com/FU5G419.jpg

Managed to form the cabinet skin by hand using just my argon cylinder and a length of wooden round I had which was about the right size.

i.imgur.com/4IGIDsE.jpg

i.imgur.com/5KVxjM1.jpg

i.imgur.com/QSdEEHT.jpg

Starting to look like a roaster..
 
JackH
It is looking great! You have put a lot of work into it over the past few years.
---Jack

KKTO Roaster.
 
BobbyS
looking really great!
 
renatoa
Now... stand up and walk ! er... roast Grin
 
broeker
Looking good :-)
 
dmccallum
Inching ever forward.. My draw tube and damper-baffle assy has come together. The handle is a re-purposed Faema e61 grouphead brew lever.

i.imgur.com/65SWh5I.jpg

i.imgur.com/s9jImr4.jpg

i.imgur.com/7pfoBKt.jpg

i.imgur.com/AgCRfFc.jpg

i.imgur.com/Ed3uWsl.jpg
 
dmccallum
And tigged the cyclone bottom plate in place to support cooling draw tube assy..

i.imgur.com/Wtc2TGN.jpg

i.imgur.com/4ILMHOX.jpg

i.imgur.com/xvjEEz0.jpg
 
AlexMunt
Hello dmccallum!
Searching for information to build my own roaster I just found your post here.

Amazing post! Lot, and I meen a LOT of information you have shared here. Construction methods, materials, R&D on the cyclon and more, details pictures, almost everything about it.

I would like to thank you for all you've shared here and congratulations for your work.
Have you finish it? It is working?
 
jscott14
I second this! I've had this bookmarked for a while, and I'm simply in awe of the science, time, and fabrication skills you've poured into this. I'd love a roast report!
I'm also curious what you ended up doing for cooling. You had mixed feelings about the need for an agitator. can you show us the finished cooling tray?
Again, BEAUTIFUL work, and thank you for being so open and sharing of your IP (CAD drawing, calcs, etc.)
 
dmccallum


I'd love a roast report too!

Thanks both for your comments. Unfortunately, the build has been parked for the last 18mths owing to circumstance and it's sat in my workshop. It is a shame given the amount of time and energy I poured into it - it's not far from the finish line after all.
I'm at home of course like many due to covid-19 restrictions but otherwise ok. I'm rather bored though and so may pick the roaster up again. I'll resume the updates as and when.
 
goat4hooves
Great drum roaster project and documentation. I have learned a lot from your endeavors. Your efforts are scratching my itch of wanting to build a drum roaster.

Thanks for sharing.
 
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
Made another turbo roaster...... Turbo Oven Roasters 27 06/28/2020 9:11 AM
Another 1.5kg or 3lb drum roaster from scratch Building a Coffee Roaster 105 06/26/2020 4:41 PM
Building a drum roaster Drum Roasters 151 06/24/2020 5:01 PM
1 lb drum build Drum Roasters 47 06/18/2020 8:02 PM
Bobby M15's drum Drum Roasters 247 06/13/2020 10:24 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 © 2002 - 2020 by Nick Jones.
Released as free software without warranties under GNU Affero GPL v3.
Designed with by NetriX