Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.

Shoutbox

You must login to post a message.

allenb

05/28/2023 6:19 PM

Laurierejoice

renatoa

05/22/2023 1:38 AM

Icebreak,

allenb

05/18/2023 8:23 AM

gvayll and TheGipsyRoaster

renatoa

05/18/2023 1:23 AM

Gavin and L_To

allenb

05/16/2023 11:49 AM

Wsunate, glad you found us! Post often and have fun!

Shoutbox Archive

Forum Threads

Newest Threads

Observations during 1C
Roast Color Meter
Freezing green beans
can't establish comm...
Bean roasting times ...

Hottest Threads

Larry Cotton's 'w...	[43]
2 series heat gun...	[23]
SR540 - Ideal pro...	[20]
New with Hottop r...	[19]
1kg (or 2 lb) flu...	[17]

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: 1

Members Online: 1
btreichel

Total Members: 7,868
Newest Member: Laurierejoice

Oh no! Where's the JavaScript?
Your Web browser does not have JavaScript enabled or does not support JavaScript. Please enable JavaScript on your Web browser to properly view this Web site,
or upgrade to a Web browser that does support JavaScript; Firefox, Safari, Opera, Chrome or a version of Internet Explorer newer then version 6.

View Thread

Homeroasters - Home Roasting Coffee Community » BUILDING A ROASTER » Building a Coffee Roaster

Who is here? 1 guest(s)

Roaster908 Design and Operation
CK	#1 Posted on 12/26/2022 10:55 AM
1/2 Pounder Posts: 237 Joined: December 07, 2018	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	#2 Posted on 12/26/2022 3:04 PM
1/4 Pounder Posts: 174 Joined: July 25, 2012	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	#3 Posted on 12/27/2022 1:08 PM
Administrator Posts: 3684 Joined: February 23, 2010	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	#4 Posted on 12/27/2022 1:50 PM
1/2 Pounder Posts: 237 Joined: December 07, 2018	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
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
fluid bed design questions	Fluidbed Roaster	19	03/28/2019 10:57 PM