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Topic: Behmor drums and their use (18 msgs / 390 lines)
1) From: Stephen Carey
Hi, all.  Hope this finds everyone enjoying their latest roast.  I 
have a question about the two drums for the Behmor.  I know when to 
use the small drum, easy to figure out.  My question is does it 
matter if I use it on all roasts?  Will it hold in too much chaff on 
larger beans?  Will the additional metal in the smaller drum affect 
temperature and the roast?
Thank you very much for you help with this,
Stephen
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2) From: Barry Luterman
I thought of the same thing but decided against it. If using a coffee
that has a high chaff output and is big enough for the large screen I
think you might be inviting a chaff fire.I always try the large screen
drum first. I fill it and hold it over the sink. Some broken beans
come out it is Ok and I then use the large screen drum. However, If
intact beans fall through the mesh then and only then do I go to
the small  mesh screen. In addition I am scrupulous on cleaning the
chaff out after every roast and running a cleaning run after every 5
roasts. After 50 some odd roasts I have never had the slightest
suggestion of a chaff fire.
On Wed, Aug 13, 2008 at 8:09 AM, Stephen Carey  wrote:
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3) From: Barry Luterman
In addition, as a further safety procedure I never do a one pound
roast with the small screen drum. I do, however, roast 1 pound roasts
with the large screen drum
On Wed, Aug 13, 2008 at 8:20 AM, Barry Luterman  wrote:
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4) From: John and Emma
Great question Stephen. I was wondering the same thing myself. I have been
using the smaller drum only for the smaller beans till now and for my last
two roasts I haven't bothered to change it out with the larger drum. I was
just starting to experiment whether there is any difference? I only have two
roasts to go by but so far I can't say it makes any difference at all to
continue to use the smaller drum. Though, I will probably still use the
large drum for longberrys. The smaller drum also didn't retain any more
chaff than the larger drum which I thought it would.
John H.

5) From: Stephen Carey
Barry,
Hi.  We seem to be on the same track.  We both handle the drums the 
same way, I was just wondering what was best.
I too super clean my machine after each roast, from wiping out as 
much as the oil and gunk as possible with a cleanser and towel, to 
doing a major vacuum cleaner job on it after each roast, then doing 
the self-cleaning after the 5th roast.  The machine looks just about 
as it did when I received it.
Thank you for your thoughtful answer to my questions and your suggestions.
All the best,
Stephen
At 02:20 PM 8/13/2008, you wrote:
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6) From: Kris McN
Hey Stephen,
I use the small screen drum for all my roasts now, have been for at least 6
months.  I'm not even sure where the regular drum is to be honest.  Probably
under a pile of camping equipment in the garage.  I digress.  I find that
very often the chaffy beans are the small ones anyway.  Also, even large
beans will usually drop a couple through the mesh , or get stuck in the mesh
and won't move, and burn and smoke.  The small screen reduces the frequency
of this phenomenon.  I don't notice a huge increase in chaff retention - I
always shake the drum with the finished roast over the trash anyway to get
rid of any excess chaff.  The only time I've experienced chaff fires (2 so
far out of close to 100 roasts) is when I've opened the door early in the
cool cycle.  I usually roast 0.5 lbs batches, but sometimes .75 or 1 lbs,
with no problems.  I haven't noticed any differences in the roasts due to
putative greater heat retention in the drum.  Honestly, it would've been
fine with me if the Behmor had shipped with just the smaller mesh drum.
Best,
Kris McN
On Wed, Aug 13, 2008 at 11:09 AM, Stephen Carey wrote:
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7) From: Gary Foster
I'm just the opposite.  I use the small mesh drum for everything and  
have not had any sort of problem at all, even on high chaff coffees  
taken all the way to vienna level.  Of course, I completely clean the  
drum, the chaff tray and the behmor interior every time and run the  
cleaning cycles as appropriate.
I don't see any problem at all to using only the small mesh drum,  
especially since the difference between the two drums is miniscule.  I  
can't even positively ID which one is which without counting the holes  
in the mesh.
-- Gary F.
On Aug 13, 2008, at 11:20 AM, Barry Luterman wrote:
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8) From: Dennis Parham
Just my observasion... I'm considering one of these Behmors but it  
seems to be more complicated than my original modded poppery with  
glass cylinder and controls I added... I can do 1lb (by volume)  
batches of small and large beans... More with the malbar and  
similar... Any insight to why Behmor is easier?? Seems to be allot of  
downtime maintanace involved... Concerned... Hmmm
Dennis Parham
Sent from my iPhone
On Aug 13, 2008, at 2:28 PM, Stephen Carey   
wrote:
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9) From: Seth Grandeau
It seems to me that I have to shake off more chaff, post roast, when using
the small grid drum, compared to the larger one.  As someone mentioned
earlier, some of the coffees requiring the small drum are more chaffy, so
that may be part of it.  But, I have had roasts with plenty of chaff in the
tray, but very little left on the bean, when using the large grid.  That has
never been the case with the small grid.
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10) From: Paul Helbert
The maintenance hasn't really been been "down time". I shortened a paint
brush to whisk it out after each use, run the clean cycles as required and
polish the area covering the thermistor. It's all pretty quick.
I haven't used my poppers much since the Behmor came, not because it is
easier; but because it is fascinating and I like the taste (less "bright")
of the drum roast. It is also quieter than most poppers and heat guns. I can
just sit down in front of it and watch. No TV here. Watching coffee roast is
probably more educational than most of what's on the tube.
-- 
Paul Helbert
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11) From: Dennis Parham
Well I am roasting about 20 PBS a week for clients and friends and  
this and working a real job doesn't leave me much time... Is cleanin  
necessary after every roast  on the a Behmor? Or can I do a " session  
" then clean ?
Dennis Parham
Sent from my iPhone
On Aug 13, 2008, at 4:56 PM, Paul Helbert   
wrote:
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12) From: Seth Grandeau
Dennis,
My maintenance routine looks like this:
   - Every roast - brush out all chaff, including drum
   - Every few roasts - clean glass with soap and water (basically do this
   when it starts to get a brown film on it)
   - Every 5th roast - 1/2 lb empty "cleaning" cycle
   - When the inside shows any build up (every 10 to 20 roasts) clean
   thoroughly with metal polish (Bon Ami), followed by cleaning cycle.
On 8/13/08, Dennis Parham  wrote:
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13) From: John Mac
The difference between the two drums is that the openings on the smaller
drum are .5mm smaller. Yes that's one half of a millimeter or slightly
larger than 1/64th of an inch.
I've found that the tumbling action of the beans breaks down the chaff and
it is passed through the screen regardless of the screen size.
Cheers,
John in Nor Cal
On 8/13/08, Stephen Carey  wrote:
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14) From: Dennis Parham
Hmm.   That doesn't sound bad at all.. Maybe a little more monthly  
than I do on popper but the convinie de of letting it to it's own  
thing I side instead of dragging equipment outdoors every other day...  
Hmmm thanks! I'll try one out soon...
Dennis parham
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On Aug 13, 2008, at 5:10 PM, Seth Grandeau  wrote:
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15) From: Bob Hazen
Since I received the small-mesh drum, I use it for all my roasts.  No 
problems (knock on wood) so far.
Didn't I read somewhere that at some point the Behmor will come with the 
small-mesh drum as standard?  Feel free to correct me if I'm wrong (or as 
Ray says, rong...) because this is just a faint firing of a synapse.
Bob
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16) From:
One thing I like about the large drum that has not been talked about - the
rare rock will fall through it and not end up in your grinder.  I have only
found a few in my year and a half of roasting, but it is much better to find
a rock in the chaff tray then in the beans after a roast.
-Frank

17) From: Seth Grandeau
I responded on the OT thread, so I'll repeat it here.  Last night I roasted
Guat Ocana (very chaffy) with the large grid and there was definitely more
chaff removed in the machine than roasts I've done with the small grid
drum.  Having both drums, I'll use the large when I can and the small when
necessary.
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18) From: Seth Grandeau
Most of the chaff falls through, but every roast leaves me with some of the
chaff on.  I take it outside, give it a good shake, until chaff stops
falling out.  Using the small grid with some Ethiopians, I can stand there
for a few minutes and have quite the chaff pile at my feet.  Using the large
grid with the Ocana, there was noticably less chaff left on the coffee at
the end of the roast.
Just my observation.
On 8/13/08, John Mac  wrote:
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