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
09/29/2023 2:05 AM
makonisroast, davidholusa82 and alannguyen, coffee drink ?

renatoa
09/28/2023 2:19 AM
welcome to forum cenglish3, Jacky Wang and RiverRoastCoffee

renatoa
09/26/2023 1:19 PM
Welcome, Oana !

renatoa
09/25/2023 1:36 AM
Clintm87, welcome cup

renatoa
09/24/2023 1:28 AM
pouring, InspiredRoastR

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: 7,952
Newest Member: makonisroast

View Thread

Who is here? 1 guest(s)
 Print Thread
Roaster908 Design and Operation
CK
I finally got around to making a short video. Here are some featured highlights of the Roaster908 and its roast process. My preferred batch size is now around the 2-pound limit of the machine. It can finish roasting in about 11-14 minutes depending on the power profile used and the desired end temperature. Over the past 18 months, it has processed around 100 kilograms of beans and everything is still working well on the unit. Basic maintenance involves disassembling the top lid to clean the roast chamber viewing glass from time to time... it gets oiled up after many roasts. Hope you like it!


Technivorm Moccamaster, French Press, Aeropress GO, Ibrik, Moka pot, Breville Barista Express, Urbanic070s/Slant Grinder, Breville SGP, Roaster908, DIY Roast Meter
 
oldgrumpus
Pretty darn cool indeed! Very nice! Thanks for sharing!
Clever Coffee Dripper
Grinder: Macap M4
Roaster: Completed drum roaster project photos shown here:
Photos https://goo.gl/ph...Da6K4wfqw5
Videos https://www.youtu...Bd1NrdpSUH
 
allenb
I second the pretty darn cool!! So, for the record, of all the commercial roasters and homebuilts I've been able to view over the years, your 908 is hands down superior to all of them in the bean agitation smoothness category. Never seen anything like this! I didn't think achieving almost perfect bean fluidity was possible without using 100% convection as a conveyance.
I really like the visibility of the roast process.

Keep us up to date on further tweaks and your thoughts on cup quality from the roasts.
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
CK

Quote

allenb wrote:

So, for the record, of all the commercial roasters and homebuilts I've been able to view over the years, your 908 is hands down superior to all of them in the bean agitation smoothness category. Never seen anything like this! I didn't think achieving almost perfect bean fluidity was possible without using 100% convection as a conveyance.

Thanks Allen, your comments are appreciated. The design intent was to keep the beans as homogenous and fast-moving as possible for efficient heat transfer. The roast as seen in the video has the beans occupying about 2.5 liters volume at the end of the roast process. The total energy input was approximately 580 watt-hours.
Technivorm Moccamaster, French Press, Aeropress GO, Ibrik, Moka pot, Breville Barista Express, Urbanic070s/Slant Grinder, Breville SGP, Roaster908, DIY Roast Meter
 
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
Bubblebed roaster based on Nepro wave design Fluidbed Roaster 27 09/27/2023 3:09 PM
Transparent Fluid Bed Design Building a Coffee Roaster 135 07/13/2022 3:11 PM
Roaster908 - A New Roaster Category Other Roasters 5 02/07/2022 6:14 PM
New Fluid bed roaster- Design and modifications Fluidbed Roaster 12 11/23/2021 1:15 PM
5 Lb Roaster Perf Plate Design Help! Fluidbed Roaster 70 02/14/2020 9:50 AM
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 © 2023 PHP-Fusion Inc
Released as free software without warranties under GNU Affero GPL v3
Designed with by NetriX
Hosted by skpacman