[Homeroast] Beginner Grill Roasting & Chaff Removal

Eddie southcoastcoffeeroaster at gmail.com
Sat Dec 6 08:19:20 CST 2014


My apologies for not responding sooner.

You asked, "I'm curious if you do anything special to remove the chaff from
the beans."

At present, I don't have to do anything special for chaff removal because I
use a first generation RK Cooler with motorized stirring vanes that my wife
purchased for me as a gift some years ago.  Since the RK Drums that I use
are perforated, some of the chaff falls through the holes.  Once the beans
are in the cooler, the downdraft actually pulls the chaff through the
larger holes of the screen that holds the beans and a finer screen
underneath catches all of the chaff and anything else small enough to fall
through the holes.  I have a dedicated Shop-Vac Bucket Max from Lowe's that
I use to vacuum the chaff.

However, in the past I setup one fairly large and powerful fan and directed
the airflow straight up and another inexpensive pedestal fan to blow across
the airstream of the bottom fan.  I had a cooling basket that would sit on
top of the bottom fan and when I poured the bean from the RK Drum into the
basket the updraft would loft the chaff a bit while the beans went straight
into the basket and the fan providing the cross breeze would blow the chaff
out into the yard.  While the beans sat in the cooler, any remaining chaff
would likely loosen and blow out of the basket as well.

I hope this helps.


Eddie Dove
Docendo Discimus
Home Coffee Roasting Blog and Reference

On Sat, Nov 29, 2014 at 7:58 AM, Will Stevens <stevens.williamr at gmail.com>

> Eddie,
> Thanks for pointing me toward the RK Drum web site.   The custom
> fabrication that  they do is really nice, but a bit out of my price range.
> Although my budget prevents me from purchasing a drum, their roast
> tutorials are really handy.  With the advice from the website, I certainly
> am roasting with more confidence and am getting better roasts.  I'm curious
> if you do anything special to remove the chaff from the beans.  I've also
> been thinking about implementing a fan to circulate the air.  A spinoff to
> this is using fan speed for temperature control using  a PID.
> Will
> Message: 1
>> Date: Wed, 19 Nov 2014 14:21:57 -0500
>> From: Will Stevens <stevens.williamr at gmail.com>
>> To: homeroast at lists.sweetmariascoffee.com
>> Subject: [Homeroast] Beginner grill roasting
>> I started roasting coffee this fall using the HG/DB method.  In my last SM
>> shipment, I purchased a behmor drum on clearance and have been roasting
>> the
>> last few lbs on my gas grill.   I love the increase in batch size that
>> this
>> method allows; i don't love that I cannot see the beans.  Additionally, my
>> current method rotating the drum using a drill leaves leaves a lot of room
>> for improvement.
>> I think that this method shows a lot of promise and am looking for
>> suggestions on ways to rotate the drum automatically, monitor bean
>> temperature,and/or add a thief visually inspect the beans.
>> Any comments would be appreciated.
>> Thanks
>> Will
>> ------------------------------
>> Message: 2
>> Date: Wed, 19 Nov 2014 15:19:54 -0600
>> From: Brian Kamnetz <bkamnetz at gmail.com>
>> To: "A list to discuss home coffee roasting. There are rules for this
>>         list,   available at http://www.sweetmarias.com/maillistinfo.html
>> "
>>         <homeroast at lists.sweetmariascoffee.com>
>> Subject: Re: [Homeroast] Beginner grill roasting
>> A list member named Ron Kyle produced coffee roasting drums for use on gas
>> grills, but unfortunately passed away several years ago. His little
>> company, RK Drums, is still in business. That might be a good place to
>> start. I know Ron used to sell rotisserie motors that reportedly worked
>> pretty well.
>> http://www.rkdrums.com/index.php/en/
>> Brian
>> ------------------------------
>> Message: 3
>> Date: Wed, 19 Nov 2014 16:49:19 -0600
>> From: Eddie <southcoastcoffeeroaster at gmail.com>
>> To: <homeroast at lists.sweetmariascoffee.com>
>> Subject: Re: [Homeroast] Beginner grill roasting
>> Will,
>> I have been roasting with RK Drums, as mentioned by Brian Kamnetz, since
>> early 2007 and would certainly be willing to help you advance your drum
>> roasting.  Whilst it may or may not be possible to see the color of the
>> beans during roasting using this method, I believe that is actually a
>> benefit in that it offers one the opportunity to rely on senses / input
>> other than sight, which can be deceiving.  I'd be glad to proffer pictures
>> of my drum roasting setup as well, if that would be of help to you.
>> We can chat on the list or you can feel free to contact me at
>> southcoastcoffeeroaster at gmail.com because I am not sure I can supply
>> pictures by way of the mailing list.
>> Happy roasting, brewing, imbibing and Thanksgiving!
>> Respectfully,
>> Eddie
>> Docendo Discimus

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