Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
You must login to post a message.

01/04/2019 10:55 AM
2 years today...Miss you Ginny!

01/04/2019 4:24 AM
A little shout for the G'ster. 2 yrs. roar

12/27/2018 5:14 AM
Hi Brandon, please disregard the "please update". I think we're all up to speed now. The need for cache clearing get's me every time! limb

12/26/2018 11:36 AM
Update? pouring Merry Christmas back atcha

12/26/2018 3:07 AM
Merry Christmas Brandon. Please update soon! christmas tree

Users Online
Guests Online: 4

Members Online: 0

Total Members: 5,766
Newest Member: cimbalino
In Memory Of Ginny

Latest Donations
John Despres (Scene... - 25.00
snwcmpr - 10.00
Ozo - 20.00
Josh Woodrow - 10.00

View Thread

Who is here? 1 guest(s)
 Print Thread
Not so much a 500g 'bake-a-round' anymore!
Thanks for chickpea advice. It will no doubt come in handy!

I had some success today; finding an oven proof bowl at Kmart ($6) and was able to drill it! I only bought one though because I was sure it would break.
It also has a nice indent on the lip so if I make a stainless steel ring they should just slot together and its own weight should hold it down. The pics are a bit distorted due to wide angle lens.
Consolidation or laziness. Either way it works for me!
I hereby name him;
"i2q4t & coffee".
I finally found a good size chamber for the three elements at 'the Salvos' charity store. A nice stainless steel ice bucket $4. The bowl is from a super market. Total roast chamber size is 6.3l.
In the Australian electronics magazine 'Silicon Chip' there's a design for a motor speed controller that is supposedly much better than a standard SCR or Triac-based controller. The article says, most triac based controllers can only use the second half wave of the 230VAC mains which is a max of 160VAC to the motor. This is a full wave universal motor speed controller that uses a PIC12F675 mirocontroller for precise phase control and also uses current feedback and a soft start.

I'm just wondering if this would be any good for motor speed control or does the zero cross, TCP4, 10k potentiometer and crydom D2425-10 do the same thing. I'm guessing the unit would cost about $60 to build.
I'm sure it would work. But the TC4 or similar system will give you much more than just blower control. Automated heater control and data logging.

My old roaster uses a diy triac dimmer based on the circuit in the link below. It has worked perfectly fine controlling a small universal motor. My broth er still uses it regularly controlling a 900W vacuum blower.
OK, I'll stick with the TC4 then. I'm just unfamiliar with the system, (manual overrides etc) and can picture a volcano spewing out flaming beans!
The article did mention the dimmer circuit.
I purchased a 750 watt vacuum motor thinking I could probably do with a bit more power than a 600 watt. I wasn't expecting such a size difference though....this thing is huge! I think it's probably too large to mount in the water filter housing.
If I was to try reflowing some hot air; what temperature do you think these vacuum motors could handle?
Edited by sethyrish on 03/07/2018 5:31 PM
How's the build coming along? I've got my roaster set up with one of the makita hand held blowers with a 2000W (at least thats what ebay told me) heating element since I may have blew up my previous heat gun element atm. For some reason I'm only about to get 200-250g green beans roasted without having to lower the blower too much to a point where the beans dont circulate as well, i'm thinking its probably my cocktail shaker head not having large enough holes so i might have to change that arrangement.

I'm thinking about getting one of those BigW blowers too and hopefully that helps with circulation a bit more.
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
Bake-a-Round build with heat recovery Fluidbed Roaster 15 05/29/2018 12:20 PM
Fluidbed Bake-A-Round Build Fluidbed Roaster 28 11/17/2017 3:07 PM
Another Bake a Round Fluid Bed roaster Fluidbed Roaster 5 11/11/2017 1:06 PM
500g (hopefully) fluidbed roaster Fluidbed Roaster 35 09/07/2017 1:04 PM
Another electric 500g home roaster Drum Roasters 31 05/11/2017 10:26 PM
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 © 2019 PHP-Fusion Inc
Released as free software without warranties under GNU Affero GPL v3
Designed with by NetriX