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Any sc/co roasters using the digital Sunpentown top?
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technoweasel
Senior Member


Joined: 24 Mar 2008
Posts: 16
Location: Central Indiana
Expertise: I love coffee

Espresso: Ascaso Dream
Grinder: Capresso Infinity, Rossi...
Vac Pot: Collector
Drip: Cuisinart DC-1200, Chemex
Roaster: SC/CO, Caffe Rosto, Poppery2
Posted Sat Oct 3, 2009, 9:51am
Subject: Any sc/co roasters using the digital Sunpentown top?
 

I know this topic has been flogged before but;
with my GG the air temp swings are just too wide and are causing inconsistencies in the final of my roasts.

  Before I PID the thing, I was hoping the digital Sunpentown SO-2002 might have a tighter control window than my GG.
The air temp drops almost 40 deg on my GG before it slowly starts ramping back to setpoint.

Is anyone using the digital Sunpentown and if so what do your temp swings look like? Are you using  a separate probe to monitor the air temp or the Sunpentown's own display? Seperate bean probe?

I know some of you advocate the variac but it seems like a somewhat crude DIY PID control.
I think for the money a variac costs that a PID controller or maybe the Sunpentown might give me more consistent temp control.

Mike
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farmroast
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farmroast
Joined: 13 Jul 2006
Posts: 1,440
Location: Amherst MA.
Expertise: Professional

Espresso: Strega,Cremina, MCAL...
Grinder: Majors, Dienes
Vac Pot: Hellem10
Drip: CCD, and more
Roaster: 1kg. DreamRoast
Posted Sat Oct 3, 2009, 7:29pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

technoweasel Said:

I know some of you advocate the variac but it seems like a somewhat crude DIY PID control.
I think for the money a variac costs that a PID controller or maybe the Sunpentown might give me more consistent temp control.

Mike

Posted October 3, 2009 link

The thing I like about some of the older GG tops is the higher wattage(1440 or 1470 watts)and better build quality. My first GG top has well over 1000 roasts on it and still going strong. The new sunpentown,etc. tops are 1200watts. I have not used the digital sunp. but fear the thermostat is still an issue.

I prefer the variac as I like to adjust on the fly. Timing of changes is really important. A PID would be nice if I have a profile worked out for a bean and were going to repeat many batches. But with homeroasting just about every roast is different.  I have ET and BT as well as a "Kill A Watt" meter on the variac on my GG top driven homebuilt

 
Ed Bourgeois... LMWDP #167
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gime2much
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Joined: 10 Dec 2004
Posts: 1,965
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Posted Sat Oct 3, 2009, 7:43pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

What Ed said...

 
Dan Brewer
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technoweasel
Senior Member


Joined: 24 Mar 2008
Posts: 16
Location: Central Indiana
Expertise: I love coffee

Espresso: Ascaso Dream
Grinder: Capresso Infinity, Rossi...
Vac Pot: Collector
Drip: Cuisinart DC-1200, Chemex
Roaster: SC/CO, Caffe Rosto, Poppery2
Posted Sun Oct 4, 2009, 7:36pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

I guess I will be answering my own question. Just bought one fairly cheap on ebay.

Good point about the lower wattage though.
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farmroast
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farmroast
Joined: 13 Jul 2006
Posts: 1,440
Location: Amherst MA.
Expertise: Professional

Espresso: Strega,Cremina, MCAL...
Grinder: Majors, Dienes
Vac Pot: Hellem10
Drip: CCD, and more
Roaster: 1kg. DreamRoast
Posted Mon Oct 5, 2009, 8:25pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

Mike
With a "Kill A Watt" meter(approx. $20. very handy homeroasting) you could monitor the cycling by setting it on watts.  Knowing when and what is happening might allow you to manipulate the settings on the digital, when needed.
CO tops give the best heat application. The stirring abilities of the SC is the limitation.
What model did you get? One has the traditional element and one is nano carbon fiber in glass element?
cheers,
farm

 
Ed Bourgeois... LMWDP #167
please visit my blog
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technoweasel
Senior Member


Joined: 24 Mar 2008
Posts: 16
Location: Central Indiana
Expertise: I love coffee

Espresso: Ascaso Dream
Grinder: Capresso Infinity, Rossi...
Vac Pot: Collector
Drip: Cuisinart DC-1200, Chemex
Roaster: SC/CO, Caffe Rosto, Poppery2
Posted Tue Oct 6, 2009, 2:03pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

farm,
I actually already have a "Kill A Watt" meter but I have never used it for roasting. I guess now is the time.

I got nano carbon fiber one, which claims to get up to 382 in 10 minutes, which is actually faster than my GG does during a roast
but who knows what actual conditions they set when they made that claim.

I  have the black Salton UFO bottom which seems to stir ok to me, my roasts come out very even (to my unprofessional eye) but if
I go much over 15 oz,  I get beans flipped up on the edge of bottom, out of reach of the arms.

I have the Salton heater wire on the switch so I can give it a little extra heat if needed.
Arms come on when unit is plugged in.

Top is "Out for Delivery" but will not have time to try it out tonight.
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farmroast
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farmroast
Joined: 13 Jul 2006
Posts: 1,440
Location: Amherst MA.
Expertise: Professional

Espresso: Strega,Cremina, MCAL...
Grinder: Majors, Dienes
Vac Pot: Hellem10
Drip: CCD, and more
Roaster: 1kg. DreamRoast
Posted Tue Oct 6, 2009, 4:03pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

Have heard the UFO stirs better/faster than the SC. The nano carbon fiber element is pretty cool. I picked up the wok type one with the curved glass to make another roaster with when I get some time this winter.
so-2007

 
Ed Bourgeois... LMWDP #167
please visit my blog
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sea221
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Joined: 28 Apr 2007
Posts: 98
Location: Arizona
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Roaster: SC/TO and 2 Kilo gas Drum...
Posted Tue Dec 8, 2009, 10:00pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

Sure would like to figure out a way to speed up the stir arm on my S/C I installed a switch to give it a little bump of heat every now and then installed a couple 3/8 pieces of copper tubing on the stir arms hoping that would move things around a little better. I am getting  good roast out of it but I think I could get better if I could get things moving a little faster.
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farmroast
Senior Member
farmroast
Joined: 13 Jul 2006
Posts: 1,440
Location: Amherst MA.
Expertise: Professional

Espresso: Strega,Cremina, MCAL...
Grinder: Majors, Dienes
Vac Pot: Hellem10
Drip: CCD, and more
Roaster: 1kg. DreamRoast
Posted Tue Dec 8, 2009, 11:02pm
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

sea221 Said:

Sure would like to figure out a way to speed up the stir arm on my S/C I installed a switch to give it a little bump of heat every now and then installed a couple 3/8 pieces of copper tubing on the stir arms hoping that would move things around a little better. I am getting  good roast out of it but I think I could get better if I could get things moving a little faster.

Posted December 8, 2009 link

Absolutely, that's why I built my Dreamroast. I've seen various builds over the past few years. Nothing that's a standard. Some have used bread machine drives. There are lots of gearhead and speed control motors on ebay and at surplus places online like SurplusCenter. com.  The turbo tops do a great job of heat application it's the stir ability that's lacking.

 
Ed Bourgeois... LMWDP #167
please visit my blog
http://coffee-roasting.blogspot.com/
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Clay34
Senior Member


Joined: 8 Oct 2008
Posts: 302
Location: Wisconsin
Expertise: I like coffee

Espresso: Aeropress
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Vac Pot: N/A - 3 Bodum presses
Drip: Bunn VPR APS
Roaster: bread machine, Corretto...
Posted Wed Dec 9, 2009, 7:42am
Subject: Re: Any sc/co roasters using the digital Sunpentown top?
 

Agree 100%, if a bread machine is meant to flip around 1 1/2 pounds of bread dough, it will flip the beans just fine and probably last much longer than a SC.  Think Goodwill and part with a whopping $10 for something that looks brand new or you could save a couple of bucks and spend $5 on something that has been used 3 or 4 times (smile).  Many of us are reaping the benifits of the bread crazed consumer who after purchasing a machine has found it just easier to buy a loaf of bread in the store.
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