Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
You must login to post a message.

· 05/27/2020 10:14 AM
Anyone else have issues seeing the whole window of a thread when accessing from a mobile phone? Any fixes?

· 04/02/2020 4:50 AM
Morning Ed, I haven't done any green coffee hoarding yet but am hoping the supplies don't end up like the toilet paper isles!

· 03/31/2020 2:53 PM
Hey Ed. Thanks. roar

· 03/31/2020 11:21 AM
Hey quarantined home roasters! I hope you have great coffee! If they have a run on coffee, I hope you're set with your great home roast! Find me on Facebook! Ed Needham

· 03/25/2020 11:49 AM
New Rochelle in the news. I think of you every time I hear it. ... Please stay safe.

Users Online
Guests Online: 3

Members Online: 1

Total Members: 6,589
Newest Member: LiamVanderwood
In Memory Of Ginny

Latest Donations
Anonymous - 5.00
Anonymous - 5.00
renatoa - 2.00
JitterzZ - 2.01
renatoa - 2.00

View Thread

Who is here? 1 guest(s)
 Print Thread
First cracks relation to chaff
I use soundAMP R with my iPad and it is pretty good, It has crude frequency filtering, and there is a PC/Android version.

Simagic: Would you please post the website for your microphone/amplifier?
Barrie (San Diego, CA)
"So much to learn, so little time."
Hottop 2K+., Artisan, Jura Capresso ENA 3 (i.e. espresso).
I have just gone back over the messages in this thread and realize that there may be a misunderstanding over what is required to hear the high frequency of first crack. The problem is that if one cannot hear high-frequency sounds, it does not help a heck of a lot to amplify them. They are still at a frequency one cannot hear. It is a bit like shouting at a deaf person - sometimes they still cannot hear you well, even if everyone else in the room shuts up. thumbdown
Barrie (San Diego, CA)
"So much to learn, so little time."
Hottop 2K+., Artisan, Jura Capresso ENA 3 (i.e. espresso).
I've been roasting with a GC for about 4 years. I had a ton of difficulty hearing 1st crack. I don't wear hearing aids - yet (pushing 60 and too many rock concerts as a kid).

Here's what I do. I don't use the chaff collector anymore - ever. I roast outside - always. In the summer in Las Vegas, I roast in the morning (say, 6:30am) in the shade. Ambient air temp can be in the 80s.

In the winters (ski season), I'm up in the mountains in Utah where it is cold. I usually start my roast in the heated garage (about 45 to 50 degrees), and once chaff starts to be ejected, I open the garage door & pull the GC outside for the finish. I usually roast in the afternoon when the outside temp is in the teens during the winter - say 4pm

The wind blows the chaff away in both cases.

I can reliably hear both first crack and second crack.

I've wondered if there is a backpressure issue (that is, the collector provides some backpressure that is optimal for the roast) but my results seem to be fine.
I don't think you will see much chaff with decaf beans.
Especially SWP Kenya's. The last bach of those I got in are a tic below 8% moisture, and first brack sound like second crack.
No oil on my beans...
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
Build a Chaff Collector Cyclone Building a Coffee Roaster 46 04/08/2020 4:32 AM
Fluid Bed Chaff Collector Fluidbed Roaster 4 02/20/2019 6:24 PM
Repeatability Issues Due to Chaff Combustion During Roasting?? HotTop Roaster 5 01/01/2019 2:14 AM
Large Chaff Collector For Gene Cafe Gene Cafe Roaster 1 12/30/2018 2:09 PM
DIY Drum Roasters and Chaff Drum Roasters 2 01/01/2017 6:07 AM
Homeroasters Association Logo, and all Content, Images, and Icons © 2005-2016 Homeroasters Association - Logos are the property of their respective owners.
Powered by PHP-Fusion copyright © 2002 - 2020 by Nick Jones.
Released as free software without warranties under GNU Affero GPL v3.
Designed with by NetriX