HomeRoast Digest


Topic: My gripe re: Poppery Mark I (was airflow mod) (4 msgs / 101 lines)
1) From: Eric B. Stauffer
This is a multi-part message in MIME format.
I've been reading the thread on modifying airflow. Clearly, it's something I
need to do if I'm going to eek out a longer profile. The Poppery Mark I just
has too much "umph" to get a longer roast than six or seven mins. Don't even
talk about roasting a second batch any sooner than fifteen mins after the
first. I've reached 2Crck in less than three mins withought proper cooldown.
Has anyone tried to cool down the chamber of the PM1 withough adding a
variac? What about completely removing (kids don't try this at home) the
white plastic shroud to enable more air to circulate, and thus cool, the
chamber?
Eric

2) From: EuropaChris
The only way to cool down a Poppery I is to put the heater on a variac or big BIG dimmer.  Removing the shroud won't help.  
You can also adjust the thermostat inside the unit which will limit the top temperature.  You have to take apart the unit completely, and adjust it with a small screwdriver.  Maybe try a quarter turn each way to see where you end up.
Chris
"Eric B. Stauffer"  wrote:
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3) From: EskWIRED
--------
I've been reading the thread on modifying airflow. Clearly, it's something I
need to do if I'm going to eek out a longer profile. The Poppery Mark I just
has too much "umph" to get a longer roast than six or seven mins. Don't even
talk about roasting a second batch any sooner than fifteen mins after the
first. I've reached 2Crck in less than three mins withought proper cooldown.
---------
Do bigger batches.  Way bigger.  A slight increase will reduce roasting time
due to the reduced airflow.  After a point, adding more beans increases
roasting time.  Likely you will need to stir the beans manually for the
first minute or two, and will have to extendthe top of the chamber with a
can or hurricane lamp globe so the beans don't pop out the top.
---
Has anyone tried to cool down the chamber of the PM1 withough adding a
variac? What about completely removing (kids don't try this at home) the
white plastic shroud to enable more air to circulate, and thus cool, the
chamber?
----
Give it a shot.  If it works, you can also just drill some holes in it
rather than removing it.  You can also open up the air vents going into the
roast chamber, but if you have a cast chamber, I'd not mess with it.
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4) From: R.N.Kyle
This is a multi-part message in MIME format.
Why not adding a 3 way switch. Center off, up for heater, and fan, down =
for small heater which acts as a voltage drop for the motor 20V the heat =
it emits is marginal, and it allows you to control the roast, and at the =
end to cool the beans.
I don't have an original Popery, I have a PII and did this, with great =
success in controlling the roast. 
Ron Kyle
a coffee roaster from South Carolina
rnkyle


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