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aneil920
Senior Member


Joined: 2 May 2013
Posts: 2
Location: Ft. Myers, FL
Expertise: I love coffee

Posted Wed May 15, 2013, 5:04pm
Subject: Popper to coffee-maker mod
 

Hi guys!! I'm new to this forum....I have been trying to use an existing pop-corn popper to home roast my coffee. However, the problem I have is two-fold,

1 It is pretty loud and smokey (so I was wondering how to solve that, maybe adding a smaller vent fan somewhere, in addition to the fan it has?) Where should I wire the fan/filter in the system (attached circuit diagram) or what else can I do to solve this.

  1. Most importantly, it gets too hot, too fast! There is no control. Hence the necessity for a switch, or timer. The switch could be a high-low setting, or the timer could be a 1 minute to 10 minute increment. I looked at some off-the-shelf timers, all I need to know now is how to wire it to the appliance circuit (see diagram attached). Can something be wrong with the thermostat? What other ways can I fix this issue?

Any help will be extremely appreciated.
Thanks!!!

aneil920: Circuit.jpg
(Click for larger image)
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CoffeeRon
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CoffeeRon
Joined: 26 Apr 2009
Posts: 748
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: Macap M7D, Pharos, Vario W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Wed May 15, 2013, 8:26pm
Subject: Re: Popper to coffee-maker mod
 

I've never used an air popper roaster, but if you do a search for "popper mods"  (search feature upper and lower right of the screen on the main forum page) you will find a wealth of information. Mostly in the "Home Roasting Talk" section of the forum.
   Welcome to CoffeeGeek!
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dana_leighton
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dana_leighton
Joined: 11 Jan 2002
Posts: 1,938
Location: Little Rock, AR
Expertise: I live coffee

Espresso: Isomac Relax; Caferina...
Grinder: Macap MXK; Baratza Vario-W;...
Vac Pot: Yama 5-cup
Drip: Technivorm; CCD; Melitta
Roaster: Poppery I w/PID controller
Posted Wed May 15, 2013, 8:42pm
Subject: Re: Popper to coffee-maker mod
 

This thread has a wealth of information.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,710
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Fri May 17, 2013, 5:47am
Subject: Re: Popper to coffee-maker mod
 

A lot of people solve the smoke issue by roasting outside.
Temp regulation is always a problem when making an appliance do a job it was not intended to do. Some roasters get around this by using a variac to control the voltage to the heater coils. They are expensive but work well. You will also need a device to monitor the temp of the roast, a digital thermometer using a thermocouple is most often used.

 
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Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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CapnJimbo
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Joined: 30 Mar 2013
Posts: 20
Location: South Florida
Expertise: I love coffee

Posted Wed Dec 25, 2013, 2:07pm
Subject: Re: Popper to coffee-maker mod
 

I'd rather not work on assumptions, so won't you kindly supply some data:   model of popper, mods, amibient temp, times to 1C/2C, intial load, etc.   Without that no advice is really valid...
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skydragondave
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Joined: 18 Feb 2013
Posts: 167
Location: Ontario, Canada
Expertise: Professional

Espresso: Commercial Only
Grinder: Commercial Only
Roaster: Has Garanti HG5
Posted Wed Dec 25, 2013, 8:06pm
Subject: Re: Popper to coffee-maker mod
 

CapnJimbo Said:

I'd rather not work on assumptions, so won't you kindly supply some data:   model of popper, mods, amibient temp, times to 1C/2C, intial load, etc.   Without that no advice is really valid...

Posted December 25, 2013 link

He asked the question in May, so likely has it figured out by now...
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takeshi
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takeshi
Joined: 12 Oct 2002
Posts: 963
Location: Houston
Expertise: I live coffee

Espresso: Alex Duetto 3.0
Grinder: Super Jolly
Roaster: Amaya Roasting
Posted Fri Dec 27, 2013, 1:27pm
Subject: Re: Popper to coffee-maker mod
 

CapnJimbo Said:

I'd rather not work on assumptions, so won't you kindly supply some data:   model of popper, mods, amibient temp, times to 1C/2C, intial load, etc.   Without that no advice is really valid...

Posted December 25, 2013 link

Did you follow the link in dana_leighton's post?
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CapnJimbo
Senior Member


Joined: 30 Mar 2013
Posts: 20
Location: South Florida
Expertise: I love coffee

Posted Fri Jan 3, 2014, 11:01am
Subject: Re: Popper to coffee-maker mod
 

takeshi Said:

Did you follow the link in dana_leighton's post?

Posted December 27, 2013 link

I just did and wish I had earlier.   Terrific!   Here it is again"
http://coffeegeek.com/forums/coffee/homeroast/18003

This thread also includes several mods, and how the operators use them.  I especially liked Sutton's well known work, and his updated wiring diagram:
http://www.sutton.org/images/PopperII_Elec_Schematic_v4.png

Thanks...
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IntrepidQ3
Senior Member


Joined: 30 Sep 2013
Posts: 50
Location: Tampa, FL
Expertise: I love coffee

Espresso: Gaggia Classic PID
Grinder: Vario
Roaster: West Bend Air Crazy
Posted Fri Jan 3, 2014, 6:27pm
Subject: Re: Popper to coffee-maker mod
 

What popper are you using?

I recently started roasting about a 2 months ago using the West Bend Air Crazy. Funny story, first it was not getting hot enough. The heat was stalling out. So I pried off the thermo governor. After doing this I could scorch my beans easily and quickly if I wanted to.

So up till earlier this week I was having the same issue as you. Too hot too quick.

To fix this I rewired my Air Crazy so the fan is always running and I turn the heat on/off with the switch. I took off the wires from the on/off switch. Than attached the wires going to the fan to the power supply. Lastly, I took the wires off the thermo governor and attached those wire to the on/off switch (these wires go to the heating element).

I went from hitting 1C around 3 min to being able to extend the anywhere between 4-9 min.

The alternative to this would be the dimmer, as mentioned in previous posts.


There is some good information on Popper mods over on the sweet marias forum and on homeroasters.org
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