HomeRoast Digest


Topic: Advantages & disadvantages of a Freshroast vs. hot air popper? (20 msgs / 434 lines)
1) From: Michael Wascher
I've been using a hot air popper to roast. A Poppery II and more recently a
Poppery.
I'm considering a Freshroast, but have never used one or even seen one othe=
r
than online photos.
What are the advantages, if any? Disadvantages?
I've been roasting in the garage, which has been somewhat inconvenient &
chilly. I used the Popper indoors, under a vent, in summer with the windows
open, and that wasn't a big hit.
--MikeW
--
"Life is just one damned thing after another."
  - Elbert Hubbard

2) From: mIke mcKoffee
This exact question just discussed beginning thread 12/4, see archives or
forum thread:http://forums.sweetmarias.com/index.php?t=msg&goto33&S=a5b11b0db239636582
a4c932bcf0f32c&srch=popper#msg_2033http://tinyurl.com/73z7wKona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer, some recipes etc:http://mdmint.home.comcast.net/coffee/Rosto_mod.htmUltimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
www.MDMProperties.net
	From: homeroast-admin
[mailto:homeroast-admin] On Behalf Of Michael Wascher
	Sent: Friday, December 30, 2005 8:56 AM
	
	I've been using a hot air popper to roast. A Poppery II and more
recently a Poppery.
	
	I'm considering a Freshroast, but have never used one or even seen
one other than online photos.
	
	What are the advantages, if any? Disadvantages?
	
	I've been roasting in the garage, which has been somewhat
inconvenient & chilly. I used the Popper indoors, under a vent, in summer
with the windows open, and that wasn't a big hit. 
	
	--MikeW
	
	-- 
	"Life is just one damned thing after another."
	  - Elbert Hubbard

3) From: Michael Wascher
Thanks!
I think I'l lstay with the popper.
On 12/30/05, mIke mcKoffee  wrote:
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--
"Life is just one damned thing after another."
  - Elbert Hubbard

4) From: Michael Dhabolt
Michael,
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Good thinking.  Spend the same $ on some upgrades to a $5 P1 and it
will confirm the 'rightness' of the decision.
Mike (just plain - spending too much $ on upgrades)

5) From: Gary Townsend
 Michael Wascher wrote: I think I'l stay with the popper.
Michael, Great choice!!!
I've *collected* 6 Poppery 1's, all under $5., and they are hard to beat,
once you get to know them better!
Check out this place to see how easy it is to roast coffee with a Poppery1!
You can also learn How to *tweak* it for maximum effectiveness.http://www.homeroasters.org/index.htmThen again, you can also get mesmerized into morphing that seemingly
innocent looking P1 into a RoastMonster, see the section titled "Fans -
Fluid bed Roasters", that fella from The Dalles, Oregon area has quite a
project under works. ;-)
Gary

6) From: Michael Wascher
Yes, I found mine for $1 a couple months ago. First thing I did was tear it
down completely for inspection & cleaning. I tweaked the thermostat to make
sure it stayed on, rewired it so the switch controlls just the heater. &
mounted a thermometer.
I like the glass chimney, need to find a nice chunk of pyrex that's the
right size. Being able to route the exhaust outside would be a big plus. I
really don't want to roast out in the cold, cold garage anymore.
On 12/30/05, Gary Townsend  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard

7) From: Brian Kamnetz
I sure envy you guys, scoring all those Poppery poppers. I am starting
to think that Poppery poppers must have been marketed in some parts of
the country much more than in other parts. Since June I have
repeatedly hit five thrift stores here in Columbia SC. Checked one in
Hilton Head. Last week I hit two thrift stores in Kalamazoo. Driving
up there through Ohio on the interestate I saw a Goodwill store and
noted the mile marker, and stopped there on the way back. Results?
Back in August I saw one Popcorn Pumper, beat up, which I bought
anyway. That's it. Fortunately, I have several poppers that I found in
Albuquerque, and a couple that I bought on eBay, so I'm able to roast,
but it sure is frustrating striking out all the time, then reading how
you guys scored  Poppery I after Poppery I - for a buck each!!!!
Brian
On 12/30/05, Michael Wascher  wrote:
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8) From: Gene Smith
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Best place to look for stuff is in the nicer thrifts, Brian.  There is also 
a seasonal aspect to thrift shopping.  All the poppers of any description 
have disappeared from my local thrifts in the last month.  Since I doubt 
they were purchased to generate popcorn for Xmas tree decorations and think 
it unlikely that many of them are now roasting coffee beans, I can only 
conclude that they were purchased for gifts by folks who couldn't afford to 
shop at tony places like Target.  Give the new year a couple of weeks and 
then look again.
Gene Smith
riding the wild learning curve, in Houston

9) From: Michael Dhabolt
I agree with Gene - there seems to be a season for them.  I've had to
buy a couple off of eBay before, and invariably find a $2 brand new,
in the box, one within a week.
Michael,
Speaking of eBay - The glass chimney of choice is a specific "Bake A
Round" pyrex baking tube.  These things were made in several sizes (I
have several odd sizes of pyrex tubes now - with no use for them). 
Check with the seller about outside diameter - can NOT be larger than
3 & 1/32" OD, if you are fitting it to a P1.  The oil lamp chimneys
can be had in straight tube (hard to find - but they are out there) or
the ones with the bulge, with the right sized OD.  They (especially
the ones with the bulge) work well but are pretty fragile (and sharp
when broken).
Mike (just plain)

10) From: Michael Wascher
It's not like I'm tripping over them!
I searched thrifts & yard sales last summer with no luck. I got a Poppery 2
from the list as a tradition. I finally found the Popper 1 at a yard sale
just a while ago. They seem to be scarce in central NJ too.
I did find a new popper at Walgreen's, got it for a friend for Christmas,
along with 2 half pounds of greens.
I just saw a suitable new popper at a nearby outlet. A large popper, 1440
watts, and Taz (the Tasmanian devil cartoon character) head for the top. A
bit pricey, maybe if it goes down a bit?
On 12/30/05, Brian Kamnetz  wrote:
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--
"Life is just one damned thing after another."
  - Elbert Hubbard

11) From: Michael Wascher
Hey, I have one of those baking tubes around here!
On 12/30/05, Michael Dhabolt  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard

12) From: Michael Dhabolt
Michael,
If the tube you have is the right size (they usually go for about $10
+ S&H on eBay) you are in business.  I usually tap the mounting boses
to #8x32:http://tinyurl.com/b73htand use brass all-thread and knurled thumbscrews to hold a chimney
mounting clamp like this:http://tinyurl.com/e2waeThe last pic shows how I install my TC also - the brass fitting is">http://tinyurl.com/8vb5con to the housing like this:http://tinyurl.com/e2waeThe last pic shows how I install my TC also - the brass fitting is
1/8" pipe to1/8" compression fitting drilled out so the TC probe will
slide thru into the center of the roast chamber.
Mike (just plain)

13) From: Michael Wascher
Excellent! Thank you Michael,
Now I need a second Poppery 1 to mod, so I can be assured of no down time!
If I'm going to do that, I'll add a way to control the heater & fan too.
The fan looks like a universal motor, though the placard indicates only 115
VAC. Has anybody run it off of DC?
--MikeW
On 12/30/05, Michael Dhabolt  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard

14) From: Michael Dhabolt
Michael,
Yes - DC works.  An AC solution that has worked well for me, and also
alows you to 'push' the motor to about 135% of it's original speed is:http://tinyurl.com/797xcThese are usually available on eBay in the $10 - $15 range.  This
"Powerstat" is available in 1 to 2.2 amp in the same frame siz - all
of which will handle the current for a 'boosted' speed P1 fan.  It
mounts in a sanitary fashion outboard of the P1 housing with a RS box
such as this.http://tinyurl.com/b8yuhmiKe has another solution that incorporates boosted voltage/speed that
works well for control of this type motor.  Check his Sig line links.
Mike (just plain - geeking along)

15) From: Michael Wascher
Excellent!
I was going to save a buck by using a cheap PWM controller, with range
limited to about 70% max, followed by a voltage double rectifierr to give i=
t
about 25% boost max. No transformers.
But with an inexpensive alternative there's no reason to bother.
Thanks again!
On 12/31/05, Michael Dhabolt  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard

16) From:
If these devices (P1, FR) are just turned On and abandoned while the Coffee
Chef attends to other things, it's not like the toaster. Toasters were not
always automatic. Unattended, they would make smoke and cinders of bread
slices.
Toaster Snacks were designed to be toasted in toasters. Green coffee was no=
t
designed to be roasted in a popcorn popper, but you can do it if you take
control.
Did you get a small Diedrich sample roaster as part of the recent
gift-giving frenzy? Do you expect to condemn your green coffee to the fires
of Hades unattended? It's a nice machine- like a Porsche, but you have to
exert continuous control just the same.
When I realized the FR was a speed demon at getting hot, I just hit the coo=
l
down for 5-10 seconds every 30- 60 seconds.
The well-known coffee emporium and most grocery outlets sell roasted whole
coffee beans for your enjoyment, the former even grinding and brewing for
you.
Cheers -RayO, aka Opa!
I thought we were leaving Titanic.

17) From: Douglas Strait
Michael Wascher wrote:
<Snip>
Michael, FWIW, I use full wave rectification filtered with 220uF 
followed by PWM on my Wearever 1400W pumper which like the Poppery I 
uses a universal motor. This arrangement works well for me and doubles 
the weight of beans that can be circulated over that of the stock 
configuration. I would expect a similar gain with the Poppery I.
Doug

18) From: Michael Wascher
Doug,
So there really is no need to increase the output with the voltage doubler
as I had intended.
You're driving the motor with a square wave (chopped DC) instead of a sine
wave. More area under the curve of your waveform, and power is proportional
to the square of the area. Ratio of area under a square wave vs sine wave i=
s
1.414 and 1.414^2 = 2 so you have precisely twice the power which is just
what you observed.
A nice solution. Very nice.
--MikeW
On 1/1/06, Douglas Strait  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard

19) From: Douglas Strait
MikeW wrote:
<Snip>
So there really is no need to increase the output with the voltage 
doubler as I had intended.
You're driving the motor with a square wave (chopped DC) instead of a 
sine wave. More area under the curve of your waveform, and power is 
proportional to the square of the area. Ratio of area under a square 
wave vs sine wave is 1.414 and 1.414^2 = 2 so you have precisely twice 
the power which is just what you observed.
A nice solution. Very nice.<
Mike, should you decide to try this approach, there is one additional 
thing that I forgot to mention. These motors have quite a bit of 
inductance, around 100mH IIRC. To prevent the energy associated with 
this inductance from being wasted in the switching element [N-Ch 
Mosfet in my case] each time the switch turns off, I place a fast 
diode in parallel with the motor, oriented so that it is reverse 
biased when the PWM switch is ON. When the PWM switch turns off the 
motor current is maintained through the diode and does something 
useful rather than just heating the switch.
Doug

20) From: Michael Wascher
Thanks Douglas, I appreciate that you're looking out for me.
However, been there done that. Years ago I was working on some equipment
that chopped 400 VDC for speed control of  a 280 HP motor. A tech removed
the steering diode (the size of a hockey puck). Then he just buttoned the
unit back up. I needed to run some tests, the motor started up, and a few
seconds later it sounded like a shotgun blast inside of the hull as the
magic smoke escaped from several hundred dollars worth of transistors. My
hand  was resting on the hull at the time.
The tech was never able to explain why he removed the diode. He did say tha=
t
he didn't think it was necessary.
I suspect I'll go the autotransformer route. there are several inexpensive
units on EBay.
--MikeW
On 1/2/06, Douglas Strait  wrote:
<Snip>
--
"Life is just one damned thing after another."
  - Elbert Hubbard


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