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.
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?
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!
calblacksmith Moderator Joined: 25 Nov 2007 Posts: 7,864 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.
In real life, my name is Wayne P. 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!
IntrepidQ3 Senior Member Joined: 30 Sep 2013 Posts: 64 Location: Tampa, FL Expertise: I live coffee
Espresso: Gaggia Classic PID Grinder: Vario Vac Pot: Royal Balance Syphon Roaster: Hottop+TC4C
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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