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Topic: HWP profiling was >Re: +HotTop Saga Continues (5 msgs / 183 lines)
1) From: Mike McGinness
From: 
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first
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Basing my profiling on BB's method it's almost exactly the opposite. First a
slow stabilizing low temp to 230f (I target 2min), then hit it hard with
high heat to just before 1st crack (122-130v dependin on amb) - I then drop
the voltage way down @350f / (target 3:30min elapsed time), then a slow
gradual roast through to finish. Depending on ambient drop to 100v-110v.
400f  7:30 target, about 1min per additional 10f.
This profile used for City to Full City gives great acidity with much better
body, depth and complexity IMNSHO. Going too slow, much beyond 13min for
435f city, seems to start to kill the brightness. As always, YMMV.
MM;-)
Home Ju-Ju Variable Variac Rockin' Rosto Roasting in Vancouver, WA USA
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2) From: Jack Berry
I've been removing the washer at the base of the dispersion rod and adding
length to the rod in attempt to extend the roast time. The result so far has
been less than great. As it came from the factory, I roasted 100 grams in
all batches. Here's what I've found so far with the modifications I've
tried:
With the washer removed and 5/16" added to the rod:
	Roast times have been extended from ~6:40 average to more than 8:30
average - some nearly 10 minutes. That 	won't sound long to an Alp roaster
but it's long for the HWP.
	Batch size of 110 grams seems to be maximum with this combination.
With washer in and 5/16" added to the rod:
	Roast time shorter, ~7:30, than with washer removed. Increased bean
agitation has to the be the reason since 	the bean being roasted was the
same (Kenya MC Decaf).
	Batch size still 110 grams.
In the first case above the coffee (brewed in Bodum press) was under roasted
even though the roast lasted way longer than ever before, never reached
second crack.
In the second instance the coffee seemed to have a bit of cereal flavor.
Perhaps this is what others have referred to as "grassy". I think it was not
quite evenly roasted but I'm going to check it out again this evening after
24 hours rest as an Americano. I'll let you know if my opinion changes.
Next test is the pull the washer, shorten the rod (remove the spacers) back
to original length and try a 110 gram batch. I'm expecting the roast time to
be extended and hope that with the rod back to design height the agitation
will be balanced and sufficient to give good results.
Jack

3) From: JB Christy
I tried 90g batches in my HWP for a good long while, 'cause that usually results
in ~78g of roasted coffee, which is exactly 3 pots worth for me - no mandatory
post-roast blending of the leftovers.  But I found 90g roasted too unevenly.
With great regret, I scaled back again, and now roast no more than 85g per
batch, and usually go for ~80g.  I get a much more even, pleasant roast.
I had high hopes for your modifications, 'cause I'd love to be able to roast
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got unsatisfactory results after your mods.  But I predict that your results
will be even worse if you do 110g, or even 100g, batches after restoring your
HWP to factory condition.  However, an ounce of experience [28.35g of experience
on earth :-)] is worth an infinite amount of speculation, so I look forward to
hearing about your actual experience.
Say, before you back out the mods to your HWP, would you mind trying a 90g
batch?  If it works for you, I'll probably try your mods.  If I can get a nice
even roast of 90g, and profile it with the Cool button, I'll be happy, happy,
happy.
Good luck!
--JB
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4) From: Dan Bollinger
You will also need to buy a longer metric screw from the hardware store.
Just take the dispersion rod with you.  Dan

5) From: Jack Berry
JB, the mod requires removing only one screw that 
holds the center dispersion rod. A few small washers 
for extending the length is all the additional 
resource you need.
--- Original Message ---
From: "JB Christy" 
To: 
Subject: RE: HWP profiling was >Re: +HotTop Saga 
Continues
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while, 'cause that usually results
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worth for me - no mandatory
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90g roasted too unevenly.
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no more than 85g per
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even, pleasant roast.
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love to be able to roast
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I'm sorry to hear you still
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predict that your results
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batches after restoring your
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experience [28.35g of experience
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speculation, so I look forward to
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you mind trying a 90g
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mods.  If I can get a nice
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button, I'll be happy, happy,
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Continues
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dispersion rod and adding
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time. The result so far has
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I roasted 100 grams in
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modifications I've
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average to more than 8:30
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sound long to an
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with this combination.
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removed. Increased bean
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bean being roasted was the
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press) was under roasted
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before, never reached
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bit of cereal flavor.
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as "grassy". I think it was not
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again this evening after
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my opinion changes.
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(remove the spacers) back
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expecting the roast time to
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design height the agitation
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results.
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t
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