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Topic: Turbo oven (12 msgs / 294 lines)
1) From: EuropaChris
I'm debating on whether to fiddle with one of these.  Has anyone tried using it *without* the Crazy portion?  Maybe tried to rig up some sort of agitation device?  It sounds like a nice way to roast coffee after reading Ryuji's web site on it.
Chris
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2) From: Steven Van Dyke
Chris,
I did an initial test with my Turbo Oven back when Ryuji first mentioned
it - I was *not* impressed.  The air oven gets plenty hot enough but without
any way to agitate the beans I wasn't getting anywhere near an even roast.
Trying to agitate the beans lost so much heat it took forever.
A couple weekends ago the ever-indulgent wife and I happened across a
display of Stir-Crazy poppers.  I mentioned they could be used to turn our
air oven into a larger volume popper and she was intrigued.  I came home and
checked my saved messages on the list to see if I had to do anything to the
popper (no) then we bought one.  Works *great*!  I've added a small fan I
can point straight up, a larger wire strainer and a shallow box to catch the
chaff.  Roasts 1 cup of greens to second crack in under 10 minutes.
Important Note: have some pot holders handy for when you want to dump the
beans out - the Stir-Crazy's handles are just as hot as the beans, he said
with memories of lightly scorched thumbs.
Enjoy!
Steve :->
(oh, and check out my simple homepage -http://www.svandyke.com- Lots of
new pictures recently added)

3) From: Angelo
Chris,
In researching these convection ovens, I came across a unit(s), the Ultrex 
with Rotisserie, on ebay, which are regular rectangular convection ovens 
with a rotisserie basket inside, which looks perfect for beans. Btw, the 
temperature goes up to 482 F..http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item44321868
They seem to be selling for about $89 average.
There is a thread(mine) on this over in alt.coffee.
I am awaiting delivery of a Turbo oven to use with a StirCrazy I had picked 
up in a thrift shop a couple of years ago, otherwise I might have looked 
into the Ultrex. At least you don't have to jerryrig anything to agitate 
the beans...:-)
Ciao,
Angelo
At 03:06 PM 8/15/2002, you wrote:
<Snip>
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4) From: Rick Farris
Steve wrote:
<Snip>
As I remember, that's exactly the performance you get with a Cafe Rosto,
which should be a bit cheaper and a lot easier...
-- Rick
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5) From: Angelo
Rick,
Supposedly, one can do up to 2-cup roasts.
You can get the Turbo Ovens on ebay for about $35, while the StirCrazy, I 
believe, is about $30, if you can't find one at Goodwill.  This is cheaper 
than Rosto.
Easier, I will grant you. However, I don't think chicken tastes as good in 
the Rosto....:-)
Angelo
At 02:34 AM 8/16/2002, you wrote:
<Snip>
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6) From: Ryuji Suzuki -- JF7WEX
Turbo Oven with manual agitation (rocking the bowl for bean agitation)
is a bit laborious process, producing somewhat erratic result. The
roast is excellent especially with powerful coffee like Harar, but
rather unpredictable. With "Crazy" part things are much easier and
much more predictable. What I miss is some surprisingly good batch
that I can never reproduce.
Only reason I don't have Stir Crazy page is because I haven't written
one yet. I roast with Turbo Oven and the Crazy Horse together these
days almost exclusively.
--
Ryuji Suzuki
"I can't believe I'm here.
People always say that I'm a long way from normal."
(Bob Dylan, Normal, Illinois, 13 February 1999)
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7) From: EuropaChris
Wholly freakin' cow, man, that oven looks like it would make a SWEET roaster!  If that worked like I think it might, it would make my entire popper collection obsolete.
One thing I can think of:  do you realize how nasty the inside of that thing will get after a few dozen roasts??  I wonder if the coffee oils would gum up the fan assembly?  Ick.
Who's going to be the guinea pig???
Chris
Angelo  wrote:
<Snip>
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8) From: Angelo
Chris,
On alt.coffee, some objections had to do with controlling the heat and 
smoke. I thought it would be better accepted as an experimental roaster 
than it has, because the Foreman/Ronco chicken roaster was considered by 
some folks, but was rejected because the temperature wasn't high 
enough...Not so with this baby.. Maybe someone can think up an exhaust 
system of some sort..
..C'mon, where are all you Thomas Edison/DaVinci types...?
A-
At 08:45 AM 8/17/2002, you wrote:
<Snip>
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9) From: Ryuji Suzuki -- JF7WEX
Before I went into Turbo Oven line of ideas, I checked every kind of
rotisserie devices I could find on the web. This one looks pretty
good, but here're my concerns.
Did anyone check the fineness of the mesh? Is it fine enough for some
Yemeni beans? Based on my experience trying to design bean coolers and
silver skin removers, good amount of skins and chaffs will escape out
of mesh if they are not ultra-fine.
If heater is located on the air's circulation pattern (and it should
be, otherwise it's not a convection oven!) the skins will get burnt at
the moment they touch the heater element. Smoke will result.
How do you remove roasted beans out of that cage? If it can be taken
out and opened easily, that's good, but most units I saw in stores
were rather difficult to remove and open quickly when I can't use my
fingers directly.
Again, Turbo Oven worked the best in a few methods I tried because the
heater sits atop the bean, and the air flows around the heater,
minimizing the contact of skins and chaffs to it (most will escape
from the chamber before touching the heater).
One method I considered (but not tried) is to buy a cheap rotisserie
and screw mount the Turbo Oven on the door of the rotisserie, using
the rotisserie as the agitator. However, quick removal of roasted
coffee was still the issue and I found Stir Crazy worked fine, so I
went that way.
These days, I cut the wiring for the heating element of Stir Crazy to
save electricity. The roasting process can be as fast as before (or
can be as slow to bake the bean, if you want). The chamber's
temperature responds better to the thermostat control of the Turbo
Oven because it is the sole heat source now. It may be a bit expensive
to pay $30 for the stupid motor, but it works well, and I'm done with
roasting device until this setup fails!
--
Ryuji Suzuki
"You always got to be prepared, but you never know for what."
(Bob Dylan, Sugar Baby, 2001)
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10) From: Ryuji Suzuki -- JF7WEX
From: Angelo 
Subject: RE: +Turbo oven
Date: Fri, 16 Aug 2002 09:46:01 -0400
<Snip>
I like chicken and most anything cooked in Turbo Oven because this
oven can cook meat and fish deep inside without burning the fat on the
surface. Fresh mackerel from the Atlantic is getting very fatty these
days but it doesn't taste greasy. Same with snapper, sardine, grouper,
eel, cod, haddock, salmon, beef steak, and most anything. Frozen food
thawed in Turbo Oven is devoid of hot spot unlike microwave oven,
another useful feature. Any convection oven should be able to do
these, but this is the only one I found that didn't seem to burn
coffee!
In my gas oven, it is difficult to cook marinated meat without burning
the marinating sauce due to strong radiated heat. It's not just the
presentation problem, but also washing problem. With Turbo Oven, this
problem is mostly gone.
In short, sure, if you are just looking for roasting solution, Caffe
Rosto or Hottop may be a better way (and I won't argue about it), but
Turbo Oven is very versatile, and roasts coffee very well.
--
Ryuji Suzuki
"A man is a success if he gets up in the morning and gets to bed at
night, and in between he does what he wants to do." (Bob Dylan)
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11) From: Ryuji Suzuki -- JF7WEX
From: "Steven Van Dyke" 
Subject: Re: +Turbo oven
Date: Thu, 15 Aug 2002 19:21:23 -0500
<Snip>
This is what I did: use both arms to lift up the entire assembly and
rock the whole unit left-right a few times, front-back a few times. Do
this circularly if you can. Do this every minute or so. Don't open the
lid no matter what happens.
Use the short rack instead of tall one to leave plenty of space
between the heater and beans. Use deep stainless steel dish that sits
on the short rack and holds enough amount of coffee.
But as I said before, I roast coffee exclusively with the Stir Crazy
agitator, continual agitation with no heater from Stir Crazy (heater
wiring cut).
<Snip>
So true!
--
Ryuji Suzuki
"You always got to be prepared, but you never know for what."
(Bob Dylan, Sugar Baby, 2001)
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12) From: peter zulkowski
Well I picked up my third turbo oven at a thrift store yesterday, cheap!
This one is the old kind with no electronics, just two rotary switches 
on the top.
The others needed work, and were mostly a learning experience.
It seems to be in good shape, but while I was testing it with a TC the 
fan belt broke :( I did learn that the thermostat cuts out at about 330F.
While I had it upside down it occurred to me that this would be a great 
way to run it!
This unit recirculates hot air!
Have the fan exhaust into a tauroid (bundt cake pan?) through slits like 
in an air popper. The beans would swirl around like in a race track, the 
hot air would rise  through the beans and be sucked back through a 
screen to the center of the fan . Tricks could be done with baffles to 
allow the chaff to settle after it exits the roasting track but a screen 
would catch the rest.
This is a serious blower, and I bet swirling the beans would be easier 
than lifting them (is this how a rosto works?).
It will be fun to experiment with to see how many beans this will roast.
Upside down Turbo Oven :)
Any ideas what I can use for a belt? or do I have to order one?
PeterZ
Looking  for input and ideas on this, here in LHC
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