HomeRoast Digest


Topic: Early First Crack (3 msgs / 43 lines)
1) From: Aaron
I roasted a batch of coffee today using a profile in my I roast that I 
have used pretty commonly.  First crack happened extremely early for 
this coffee, barely after the 'peanut color' stage of the roasting 
process.  Needless to say I was a bit suprised...  Has anyone else 
experienced a way earlier than expected first crack on a roast... the 
temperature could not have been any more than 400 degrees, probably 
quite a bit less since that was the dial in temp for the i roast and it 
tends to run a tad cooler than dial up.
The temperatures were good on the I roast and circulation was excellent, 
and I was about 4 to 5 minutes into the roast.
Aaron

2) From: Ken Mary
<Snip>
400F is about mid-first in my drum roaster. However, on a few occasions, I
got an early pop of first near 375F which I think was a bean stuck in some
corner of the drum that got overheated. Was your 400 on the iRoast internal
or an added t/c sensor?
--

3) From: Aaron
Ken the 400 was internal on the I roast but this specific one tends to 
actually be within 5 degrees of what I have dialed into it. I wish the 
others were that close when they ran.   Then again, that's the temp of 
the probe at the bottom of the i roast, not necessarily where the beans 
are at.
Aaron


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