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01/12/2021 6:15 PM
@Nomad As a general rule Roasting should not exceed 20 min to second crack What you are describing is baking
12/31/2020 2:39 PM
I trying another 2 cups at 200 for 45 min
12/31/2020 2:38 PM
I have a questions.. im trying to experiment with riasting.. i roasted 3 cup of nicaraguan at 200 degrees for 1 hr and 30 min.. is that to long?
12/17/2020 11:16 AM
Snow again in NC.
12/13/2020 3:51 PM
I didn't realize snow was forecasted for this neck of the woods
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 Bobby M15's drum
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| dmccallum |
Posted on 10/09/2017 5:54 AM
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 1/4 Pounder  Posts: 92 Joined: November 24, 2015 Location: London, UK |
Has the topic not come up before? Looking at videos of commercial roasters they seem to have fairly large holes or at least of comparable. Be interesting to see the answer to this one. |
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| BobbyS |
Posted on 10/09/2017 5:25 PM
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 1/4 Pounder Posts: 179 Joined: July 02, 2011 |
I don't know if the topic gas come up before or not. But searching doesn't seem to come up with what I am looking for. Most of the ones I have seen have what looks like smaller holes in comparison to the beans. https://www.youtube.com/watch?v=9NPxU...NPxUVvfbG4 https://www.youtube.com/watch?v=VTmEi...TmEim2JgRU https://www.youtube.com/watch?v=8tlT5...amp;t=571s Edited by BobbyS on 10/09/2017 5:31 PM |
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| BobbyS |
Posted on 10/09/2017 8:02 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
I did see a forum where a guy said he had an Ambex YM2 and said the hole size was 4mm ~.157
Edited by BobbyS on 10/09/2017 8:13 PM |
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| BobbyS |
Posted on 10/18/2017 5:43 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
OK, got some ss steel with .157 holes in it and it didn't work any better. I messed around with the stirring blades and got an acceptable usage with the cooling tray material I started with. I am waiting for the front and back plates to come back from the machine shop. then I will start on the bean hopper on top. I will probably start making a cart for it now too. |
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| Ringo |
Posted on 10/20/2017 8:32 AM
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 Pounder  Posts: 472 Joined: January 14, 2010 |
I wonder if the outside blade angled so steep is wedging the beans to the outside pot and thats where the bind is. your holes look right to me and should work. Funny story the uhmw you used on the stirrer is called virgin if its white. I ordered two sheets for work and the bill came into the office for $500 for two virgins, i got a visit from the owner.
All you need in life is ignorance and confidence, and then success is sure. Mark Twain
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| BobbyS |
Posted on 10/20/2017 8:33 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Quote Ringo wrote: I wonder if the outside blade angled so steep is wedging the beans to the outside pot and thats where the bind is. your holes look right to me and should work. Funny story the uhmw you used on the stirrer is called virgin if its white. I ordered two sheets for work and the bill came into the office for $500 for two virgins, i got a visit from the owner. haha........he must be out of contact with $$$$ in 2017. I will try the angle change next and see how that works. thanks! |
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| BobbyS |
Posted on 10/22/2017 7:38 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
OK, getting a little farther along. Testing function with some roasted beans. https://www.youtube.com/watch?v=8y5Fw...y5Fwxdz0js |
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| BobbyS |
Posted on 10/24/2017 9:48 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
I extended the video some to show the inside of the cooling tray so the dump chute was visible. I cannot edit the above previous vid link so I just deleted the vid. Hope this method is cool with the mods. https://youtu.be/Dxe3zkYlvNc |
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| BobbyS |
Posted on 10/26/2017 4:09 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
OK, got the front and rear plates back from the machine shop. Nice water-jet cutting. Now to get some more pieces made. This is the front.
Edited by BobbyS on 10/26/2017 4:15 PM |
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| BobbyS |
Posted on 10/26/2017 7:01 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Got the bearings on and set it up to see if everything lines up and it is good to go. |
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| allenb |
Posted on 10/26/2017 7:34 PM
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 Administrator  Posts: 3329 Joined: February 23, 2010 Location: Longmont, Colorado |
Wow, this is going to be one gorgeous roaster! Very nice! Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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| BobbyS |
Posted on 10/27/2017 1:32 AM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Thanks Allen! I am still at odds with myself on how much room to have between the back of the drum and the rear plate for air movement through the drum. |
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| allenb |
Posted on 10/27/2017 8:31 PM
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Administrator Posts: 3329 Joined: February 23, 2010 Location: Longmont, Colorado |
For a 1 kg and smaller, 1 1/2" should be more than sufficient from my experience. Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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| BobbyS |
Posted on 10/28/2017 12:59 AM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Quote allenb wrote: For a 1 kg and smaller, 1 1/2" should be more than sufficient from my experience. Allen this one will be about 2kg. Maybe 2 inches? |
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| allenb |
Posted on 10/28/2017 8:31 AM
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Administrator Posts: 3329 Joined: February 23, 2010 Location: Longmont, Colorado |
That should be fine. It will provide plenty of open surface area to not restrict exhaust flow. Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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| BobbyS |
Posted on 10/28/2017 1:34 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Quote allenb wrote: That should be fine. It will provide plenty of open surface area to not restrict exhaust flow. Allen Thanks! |
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| BobbyS |
Posted on 12/16/2017 5:16 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Yea; making some headway again. been sick so got slowed down. doing better now and picking up a little speed. got the door assembly, a thermocouple placement and hinge done, now the hopper and trier is next.  |
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| allenb |
Posted on 12/16/2017 7:33 PM
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Administrator Posts: 3329 Joined: February 23, 2010 Location: Longmont, Colorado |
Bobby, Glad to hear you're feeling better and able to work on your roaster again. A lot of us, (including me), think we're invincible and won't have to deal with sickness issues but it inevitably catches up to all of us and reminds us we're human. Allen 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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| BobbyS |
Posted on 12/16/2017 11:00 PM
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1/4 Pounder Posts: 179 Joined: July 02, 2011 |
Thanks Allen, yeah a lot of folks around here have had some kinda crud and it's difficult to get rid of it. Yup, I'll be getting my stone axe ready to start again.lol |
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| dmccallum |
Posted on 12/22/2017 4:06 AM
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1/4 Pounder Posts: 92 Joined: November 24, 2015 Location: London, UK |
I'm going with LFTC12 2-bolt housed bearings for the drive shaft. What ones are you using ? |
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