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Homeroasters - Home Roasting Coffee Community » BUILDING A ROASTER » CONGRATULATIONS, Roaster Contest Winners!!!

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Fluid Bed Air Roaster & Cooler
seedlings	#51 Posted on 08/17/2007 10:57 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Eddie, you're too kind. How could I take anything you said in a wrong way? My intention was to have something that another roaster could either recreate or improve (BTW, I kept all the templates for each metal part when I remade with aluminum, in case someone want's a copy). I was confident that simplicity was necessary, and I troubleshoot telephone communications equipment on a daily basis, and it's nearly always the simple solution that works best. I have in mind some complications to add into the roaster, but, time will tell. I don't know when I'll get around to it once the RK arrives! I may never modify again...well...um... that's not exactly my M.O. B) This IS the result from help and suggestions you and the other Admins provided me. I may not have actually implemented this or that suggestion, but each one made me think harder about it. Blessings and thanks, CHAD Edited by seedlings on 08/17/2007 11:02 AM


ttriff	#52 Posted on 09/05/2007 11:48 AM
Newbie Posts: 4 Joined: August 24, 2007	This is surprisingly similar to the fluid-bed roaster in my local Whole-Foods. It has a tall glass cylinder (8"X 20"?) that's clamped between stainless piping. The glass is held in place and sealed by clamps at the top and bottom that have a section of stainless rod at each of 4 corners. (this would eliminate the need for adhesive and facilitate a quick change if the glass is broken) I watched them do a roast last week. No profile at all. The machine was simply set to achieve a specific bean temp. In this instance the beans were heated to 418 degrees then automatically cooled to 200F. The machine shuts off when the beans are 200F. The beans were then dumped into an open bottom bin that has slow speed fans pulling room temp air through it. ttriff attached the following image: Edited by ttriff on 09/05/2007 12:21 PM


seedlings	#53 Posted on 09/06/2007 8:20 AM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	I like that one! I'd love to see one of those in action. It may actually use more energy than mine !!! Your pic looks a lot like a Sivetz roaster. Check them out here: http://sivetzcoff...ass%20tube The Sivetz site was another one I looked over again and again. I sure appreciate your comments. I have Ideas for generation 2 model, but I've been using the new R&K BBQ drum roaster and still trying to decide if I like it better than the forced air. I really think there is a difference. I just haven't quite decided which I prefer. Thanks!!!! CHAD


rcwarship	#54 Posted on 07/17/2009 5:57 PM
1/4 Pounder Posts: 143 Joined: April 22, 2009	Heya Chad, Very cool, I like it. I don't have my drum roaster done yet, but I can't help thinking about a fluid bed roaster & found your build. Do you by chance know what the cfm is on that leaf blower? Thanks, Jon Tell me and I forget, show me and I remember, involve me and I understand.


seedlings	#55 Posted on 07/19/2009 9:14 PM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	Quote rcwarship wrote: Heya Chad, Very cool, I like it. I don't have my drum roaster done yet, but I can't help thinking about a fluid bed roaster & found your build. Do you by chance know what the cfm is on that leaf blower? Thanks, Jon No I don't. It's a "120mph" leaf blower... not real helpful. Wish I'd known about timer-triac circuits when I built this. CHAD Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


rcwarship	#56 Posted on 07/21/2009 3:42 PM
1/4 Pounder Posts: 143 Joined: April 22, 2009	Quote seedlings wrote: No I don't. It's a "120mph" leaf blower... not real helpful. Wish I'd known about timer-triac circuits when I built this. CHAD Thanks for the response, it opened up a new avenue of thought. I see that you built a triac circuit. What I couldn't quite figure out is what they are used for. Would they be good for: DC motor speed control? AC motor speed control? Electronic heater control? Gas solenoid control? Inquiring minds want to know. I have a DC motor that I would like to rotate at a snails pace, if the circuit would do that it'd be awesome. If not, can you suggest another circuit that I could build? I need to manually dump the beans in my drum project & figure that a slow rotating acme thread shaft for a dump mechanism would be awesome. Thanks Again, Jon Tell me and I forget, show me and I remember, involve me and I understand.


seedlings	#57 Posted on 07/22/2009 1:14 PM
1 1/2 Pounder Posts: 4226 Joined: June 27, 2007	The device cycles the AC power on and off at a variable rate. Universal motors are what they're meant for, like a Router or a Drill. Yes as a electric heater control, or light dimmer. The on-off timer is a simple 555 chip circuit, which tells a Triac chip to allow or disallow the AC to flow. This won't work for your DC slow-turn setup. If lowering the DC voltage will slow the turning speed, then I do have a circuit for a Variable Voltage Regulator for DC that I use in Vacuum Tube Guitar amps to turn down the high DC voltage. CHAD Roaster: CoffeeAir II 2# DIY air roaster Grinder: Vintage Grindmaster 500 Brewers: Vintage Cory DCU DCL, Aeropress, Press, Osaka Titanium pourover


Unta	#58 Posted on 04/15/2010 7:09 PM
1 1/2 Pounder Posts: 788 Joined: January 26, 2010	Chad.. this thing is AWESOME!.. pure innovation.. love it! Sean Harrington educate.
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