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

can't establish comm...
Observations during 1C
Roast Color Meter
Freezing green beans
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: 3

Members Online: 0

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)

Page 1 of 2: 12

Honey Badger 1k
jkoll42	#21 Posted on 03/01/2012 7:45 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Quick update. Strange 1C temperature of first roast must have been a fluke. Did 2 back to back roasts at my friends and 1C hit at 404F and 2C (espresso) hit around 442F which was basically where the HGBM hit so temps are solid now. Also, slightly tilted machine about 1/2" and solved the few burnt beans. Thanks for that tip. Overall impressions - This is an extremely easy machine to roast with. Temp control is easier than with the heat gun which I believe is mainly due to instant temp changes of the flame. There is absolutely no tipping or scorching and bean color is extremely even. I do think I will get the smaller sievert burner. The 2941 was running at about 3psi (operating psi is 30). We were roasting in a detached unheated garage with ambient air at 35F and even without insulation around the vessel things went perfect. I though I might have to insulate it but there is no need. I have been drinking the first roast of Rwanda which due to the temp readings probably didnt have the profile I wanted. Still very good. I took it to C/C+ and it is well rounded and has a really nice juicy fruit finish. A very 'wet' coffee which is nice. There was question if the incinerated chaff might taint the cup but I can't pick out any off flavors and I think they would be apparent at such a light roast. It makes for a nice light show in the vessel - blue flame and swirling embers. I also believe there is enough agitation to at least roast 3# - maybe more but I don't feel like wasting a batch of beans to find out! Jon Edited by jkoll42 on 03/01/2012 7:46 AM -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


oldgearhead	#22 Posted on 03/01/2012 8:08 AM
1 1/2 Pounder Posts: 1128 Joined: February 10, 2011	Very nice job! :) No oil on my beans...


jkoll42	#23 Posted on 03/12/2012 7:26 PM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	I know I always love roaster videos.... so here are some roaster videos! Just a few short ones. Burner on, empty. Burner on 2# load of Yirgacheffe, pyrotechnic display as the chaff burns off, and audible 1C. Enjoy! Also found out that I really need to order that smaller burner - 60F ambient tonite and the burner was nearly going out - at about 2PSI just to control the roast. [video]http://www.youtube.com/watch?v=EiJs8bVazLI[/video] [video]http://www.youtube.com/watch?v=yxtPfC13rWk[/video] [video]http://www.youtube.com/watch?v=uNanY4gA1b4[/video] [video]http://www.youtube.com/watch?v=b1JdwyEmYCA[/video] -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


allenb	#24 Posted on 03/12/2012 10:04 PM
Administrator Posts: 3684 Joined: February 23, 2010	That's some real fire power! Will the smaller burner fit without modifications? Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


jkoll42	#25 Posted on 03/13/2012 5:10 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Allen - yes it will. I had a feeling that I would have too much heat from that burner so I designed it to be easy to change. 30 seconds tops :) -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


seedlings	#26 Posted on 03/13/2012 8:07 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Jon! You have yourself a super-practical, functional and great-looking roaster! With a little height added to your beater, and perhaps a second vane on the opposite side, that roaster could fire up a huge batch of beans. Great videos, great write-up. Well done!!! CHAD Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


JETROASTER	#27 Posted on 03/13/2012 8:14 AM
Administrator Posts: 1780 Joined: March 06, 2010	Nice machine, nice post! Thanks for the vids. -Scott


allenb	#28 Posted on 03/13/2012 7:47 PM
Administrator Posts: 3684 Joined: February 23, 2010	Not only does HRO have the first (that I know of) direct flame home-built roasters but it has two totally different varieties: direct flame drum and direct flame SCTO. Now Scott is going to have to add a third variety, the DFFB, Direct flame fluidbed.;) Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


seedlings	#29 Posted on 03/14/2012 8:19 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Quote allenb wrote: Not only does HRO have the first (that I know of) direct flame home-built roasters but it has two totally different varieties: direct flame drum and direct flame SCTO. Now Scott is going to have to add a third variety, the DFFB, Direct flame fluidbed.;) Allen We've also had a direct-flame breadmaker & torch roaster :) http://homeroaste...ad_id=1029 CHAD Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


jkoll42	#30 Posted on 03/26/2012 4:59 PM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	A little update. My new burner came in last week and was able to swap it out and roast two batches over the weekend. The lower heat output matches the roaster much better. They are 30psi/2bar rated for max output and the roast ranged from 20 to 10psi so I still have overhead but didn't have to bring it down to stall speed. It is also much easier to keep tighter control on the ROR since a small change in pressure does not equal as huge a change in heat output as with the larger burner. It's a keeper! I though it might be interesting to see the size comparison of the two burners so here it is (ruler is in inches). Top burner - sievert 394102 (3.1kw). Bottom burner - sievert 294102 (7.7kw) Jon -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


jkoll42	#31 Posted on 06/14/2012 6:55 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Update #2 The axial fan I was using just didn't push enough pressure to get the circulation I wanted in the chamber. The smoke was getting trapped in there and giving a slight off flavor to the beans. To test things out I pulled the retired poppery I out and ran flex duct from it (I have the fan/heat circuits seperated) to provide airflow over the burner. This turned out to be just the right amount of air. Off flavor is gone and the smaller burner still has enough heat output despite the significantly larger air turnover. Any ideas for a compact blower unit with a similar pressure output as a popper so i can integrate it into the roaster and ditch the duct? The other somewhat surprising thing I have noticed is in the rest period for the beans. My old hg/bm usually peaked about 3 days post roast and specific flavor notes declined noticeably after that. With this setup, peak flavor seems to be more like 4-5 days out but is more developed and complex and it holds those notes with nearly no degrading. Any thoughts? The only variable I can think of is the influence of the direct flame. -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


JETROASTER	#32 Posted on 06/15/2012 10:02 AM
Administrator Posts: 1780 Joined: March 06, 2010	Quote jkoll42 wrote: Any ideas for a compact blower unit with a similar pressure output as a popper so i can integrate it into the roaster and ditch the duct? Does this blower need to handle heat? -Scott


jkoll42	#33 Posted on 06/15/2012 11:34 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	No, it is behind the heat source. -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


JETROASTER	#34 Posted on 06/15/2012 12:08 PM
Administrator Posts: 1780 Joined: March 06, 2010	For a pound of something tasty ...it's yours! 4" single fan. -Scott JETROASTER attached the following image:


jkoll42	#35 Posted on 06/15/2012 10:14 PM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Winner Winner Chicken Dinner!!! PM -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


John Despres	#36 Posted on 06/17/2012 10:00 PM
Administrator Posts: 2221 Joined: January 09, 2008	That fan is worth a mound of beans... Good on you, Scott! John Respect the bean. John Despres Fresh Roast 8, Gene Cafe, JYTT 1k, Quest M3, Mazzer Mini, Technivorm, various size presses and many more brewers.
	Web

JETROASTER	#37 Posted on 06/18/2012 2:32 PM
Administrator Posts: 1780 Joined: March 06, 2010	Ok, it's headed your way. Hopefully it will do some good. If not, I'll find another. I started throwing blowers into our recycle collection. I accumulate roughly twenty a week....most are completely funtional! Todays vacuum cleaners seem to fall apart long before the motors fail. ....sign 'o the times. -Scott


bryce_wes	#38 Posted on 12/03/2012 1:21 PM
Newbie Posts: 2 Joined: December 02, 2012	I am interested in making a "clone" of this roaster. I currently am using a popper but want to move up in the amount of beans that I roast. I am hoping by staying with a hot air machine that I can maintain similar results to what I achieve now. This project jumped out at me because I have almost all the parts on hand. I just have a couple questions. First, do you just roast 1 kg of beans per roast or is there a bit of wiggle room in that? Second, Is there a significance to the angle of the convection tube? Thanks in advance, and congratulations on a great looking roaster.


jkoll42	#39 Posted on 12/03/2012 7:55 PM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Quote bryce_wes wrote: I am interested in making a "clone" of this roaster. I currently am using a popper but want to move up in the amount of beans that I roast. I am hoping by staying with a hot air machine that I can maintain similar results to what I achieve now. This project jumped out at me because I have almost all the parts on hand. I just have a couple questions. First, do you just roast 1 kg of beans per roast or is there a bit of wiggle room in that? Second, Is there a significance to the angle of the convection tube? Thanks in advance, and congratulations on a great looking roaster. It would be great to see another roaster using this design as inspiration. Any help I can give just shout out. 1kg just kinda rolled off the tongue easier. I typically roast 2# load since it is easy to order beans in even pounds. With that burner there is more than enough heat for 5# but I think you might run into agitation issues above 3# with the stirrer setup the way it is. I think you would probably be able to throttle the burner back enough to do 1# although I haven't tried. So to answer your question a bit more directly, yes there is wiggle room but I am not sure just how huge a window that is effectively. Probably 1-3# without much modification; maybe more. The angle of the convection tube was mainly to try and hit the center of the bean mass which was about at the base corner of the pot but the exact angle has proved to not be significant. One additional update that I will post below. Hope this helps and start a new thread with your build! -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


jkoll42	#40 Posted on 12/03/2012 7:59 PM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	UPDATE:: All has been roasting well. I was having some issues with a little slight unevenness in the roast which I initially though was a agitation issue. Turns out the torch was putting out flame too directly into the beans. I extended the copper pipe to allow for more air mix into the flame before it entered the RC and that solved everything. It's about double the length now and works great. Also got to test the 'off the grid' ability of the roaster during the Sandy power outage. Ran it off a car jump pack and the propane tank and all was good! -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


bryce_wes	#41 Posted on 12/04/2012 12:13 AM
Newbie Posts: 2 Joined: December 02, 2012	Thanks for the info. That is more than enough flexibility for what I am looking for. I will try to post a thread as I build the roaster.


jkoll42	#42 Posted on 12/31/2017 7:24 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Hi all - it's been a while. Work, family etc. So after 6 years I had my first failure on the roaster. I was planning to roast some batches in single digit weather, dumped the beans and maybe 15 seconds later the stirrer seized. As best as I can tell after probably 250 batches of heat cycles the long preheat got the aluminum fatigued enough that when a bean got jammed between the stirrer and the RC wall it bent the stirrer back and jammed it against the RC wall. They were pretty small Guats, not peaberry but small. There aren't any cracks in the metal and that gear motor only puts out 4 in-lb of torque so that's my only thought. Back to the shop tomorrow to make the most annoying to make part of the whole build out of steel. Let this be a warning to anyone making a stirring arm out of aluminum that's getting hit directly by a torch during preheat - you might only get 6 years out of it Happy New Year all! -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


jkoll42	#43 Posted on 02/26/2018 7:25 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	Update on the stirring arm for anyone who might be looking to build something similar. Finally got around to fixing it. To make fabrication and future mods/repairs easier I kept the geometry the same but totally redesigned the assembly. It is now a piece of 1" square aluminum stock for the spindle with mild steel bar attached for strength. The leading edge is thin flat stainless as it is much easier to profile it for height/curve of the RC. Where the set screws meet the shaft I ground flat spots on the shaft as a sort of keyway. All set screws/screws tapped at 10-24. jkoll42 attached the following image: -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3


JackH	#44 Posted on 03/01/2018 4:22 PM
Administrator Posts: 1809 Joined: May 10, 2011	Jon - Glad you got it back together and working again. How fast does that spin? ---Jack KKTO Roaster.


jkoll42	#45 Posted on 03/03/2018 6:53 AM
1 1/2 Pounder Posts: 860 Joined: February 14, 2011	iirc it's 200rpm -Jon Honey badger 1k, Bunn LPG-2E, Technivorm, Cimbali Max Hybrid, Vibiemme Double Domo V3

Page 1 of 2: 12

Jump to Forum:

Similar Threads

Thread	Forum	Replies	Last Post
El Salvador Honey Processed!	Green Coffee	7	11/10/2011 8:24 AM