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My popper
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Discussions > Coffee > Home Roast > My popper  
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ronnie_b
Senior Member


Joined: 7 May 2005
Posts: 308
Location: New Jersey
Expertise: I love coffee

Grinder: Bodum Antigua
Drip: Melitta pour over
Roaster: PID'd P1
Posted Tue Mar 27, 2007, 6:05pm
Subject: My popper
 

People have asked about my roaster so I thought I'd post some pics and a description. I have a P1 with an Auber PID w/30 programmable steps. The PID monitors the heater input temp for control. I monitor the bean temp with one of these: http://www.indoorhealthproducts.com/912.htm I have a booster transformer for the fan and I can roast up to 250 grams of coffee by tilting the roaster. The Roast chamber is a heavy duty lantern chimney from Wally world. The chimney flares out at the top and I cut the top off with a Dremel. The chaff catcher is a stainless steel canister lined with some aluminium screen from Wally world also. I cut a hole in the bottom and glued in a tomato paste can. The can just fits over the chimney.
Now for some pics.
The Roaster
Click Here (i19.photobucket.com)

The control panel
Click Here (i19.photobucket.com)

The cooler
Click Here (i19.photobucket.com)

Ron
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gt
Senior Member


Joined: 29 Jan 2007
Posts: 210
Location: Mpls/St Paul MN
Expertise: I like coffee

Espresso: None
Grinder: Virtuoso
Drip: Cones & CCD
Roaster: P1 w/ variacs
Posted Tue Mar 27, 2007, 7:21pm
Subject: Re: My popper
 

Ron, is this the boost transformer you are using now?  If so does the fan seem to hold up good and how many roosts have done with it?

Click Here (www.surpluscenter.com)

I saw in an early post that you were using this boost transformer and I order one a couple of days ago to use with my P1.  I'm just wondering how the fan holds up with the over voltage.

Thanks Gary
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ronnie_b
Senior Member


Joined: 7 May 2005
Posts: 308
Location: New Jersey
Expertise: I love coffee

Grinder: Bodum Antigua
Drip: Melitta pour over
Roaster: PID'd P1
Posted Wed Mar 28, 2007, 4:56am
Subject: Re: My popper
 

That's the one. I tried using a Radio Shack transformer as was posted in other places but it died on me. That one is solid, it's rated for 3 amps. I've been using it since September and do at least 2 roasts a week. The fan has been fine. I only run it as fast as I need it to agitate the beans. I have done roasts of 250 grams but I get a very uneven roast at that weight.
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mckolit
Senior Member
mckolit
Joined: 24 Jan 2007
Posts: 91
Location: Southern California
Expertise: I love coffee

Espresso: Delonghi EC701
Grinder: Mazzer Super Jolly (with the...
Vac Pot: Bodum Santos
Drip: Krups
Roaster: Whirley Pop
Posted Wed Mar 28, 2007, 7:27am
Subject: Re: My popper
 

Ron,

Where do you put the thermocouple in your popper to measure heater temp?

 
Man likes to play chess.  Let's get him some rocks.
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gt
Senior Member


Joined: 29 Jan 2007
Posts: 210
Location: Mpls/St Paul MN
Expertise: I like coffee

Espresso: None
Grinder: Virtuoso
Drip: Cones & CCD
Roaster: P1 w/ variacs
Posted Wed Mar 28, 2007, 7:28am
Subject: Re: My popper
 

OK thanks Ron.  When you say "I only run it as fast as I need it to agitate the beans", I not sure what you mean.  With this boost transformer, you only get one speed don't you?

Thanks Gary
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mckolit
Senior Member
mckolit
Joined: 24 Jan 2007
Posts: 91
Location: Southern California
Expertise: I love coffee

Espresso: Delonghi EC701
Grinder: Mazzer Super Jolly (with the...
Vac Pot: Bodum Santos
Drip: Krups
Roaster: Whirley Pop
Posted Wed Mar 28, 2007, 8:37am
Subject: Re: My popper
 

It looks like Ron uses a dimmer to control fan speed?

 
Man likes to play chess.  Let's get him some rocks.
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ronnie_b
Senior Member


Joined: 7 May 2005
Posts: 308
Location: New Jersey
Expertise: I love coffee

Grinder: Bodum Antigua
Drip: Melitta pour over
Roaster: PID'd P1
Posted Wed Mar 28, 2007, 6:22pm
Subject: Re: My popper
 

Correctamundo about the dimmer. The transformer and the dimmer are way less expensive than a variac. If you look at the picture of the roaster, the thermocouple for the bean temp is sticking out the side of the roaster. The thermocouple for the PID is underneath the cover. I drilled a hole in a flat spot on the roast chamber. It's behind the finned portion before the heated air enters.
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gt
Senior Member


Joined: 29 Jan 2007
Posts: 210
Location: Mpls/St Paul MN
Expertise: I like coffee

Espresso: None
Grinder: Virtuoso
Drip: Cones & CCD
Roaster: P1 w/ variacs
Posted Wed Mar 28, 2007, 7:09pm
Subject: Re: My popper
 

Thanks guys, I understand.  Gary
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