[Homeroast] Quest M3 with 300g Loads

Robert Yoder robotyonder at hotmail.com
Mon Mar 28 15:02:18 CDT 2011

Thanks, Hank!
Happy Roasting,
robert yoder
> Date: Mon, 28 Mar 2011 08:03:26 -0500
> From: hankperkins at gmail.com
> To: homeroast at lists.sweetmariascoffee.com
> Subject: [Homeroast] Quest M3 with 300g Loads
> Good Morning!
> This morning I I completed my 2nd and 3rd loads at 300g. I can't say
> I have this down but I can achieve most any profile I want with the
> Quest loaded to 300g.
> Some general comments:
> To increase ET while decreasing BT open the bean drop and the roaster drop door.
> I believe you need to supplement the heat of the roaster when you
> exceed around 260g. At least you have more flexibility with an
> additional heat source.
> The challenge here is to be able to hit C1 between the 8:00 and 10:00 mark.
> In the three loads I have roasted I have hit C1 at 7:30, 8:30 and
> 9:40. I have been able to see between 1:30 and 2:30 between the end
> of C1 and the start of C2.
> I am using an Omega Data Logger, Artisan running on my Mac, Eric's
> Thermocouples, and a Master Pro Heat LCD Heat gun with the smallest
> reducer tip that fits down the tryer hole.
> The Process:
> I have had my best success with the ET running around 650f and BT at
> 400f when I drop the beans. I use the aforementioned technique to get
> these temps around these ranges. I start with the heat gun in the
> tryer hole with the fan set to 9 o'clock and the temp set to 400f.
> Once I I drop the beans I turn on the heat gun. With the temp set at
> 400 I don't need to worry about ill effects from the gun. What I am
> trying to do is get the temp bounce to happen quickly. The challenge
> here is getting the roast out of the drying phase in a timely manner.
> I watch my temps closely. To hit a C1 at 8:30 I left the gun in place
> running until my BT hit 235f. Leave it in longer, or increase the
> temps and you can shorten the roast and increase the rate of rise.
> Pull it at a lower tenp and you can extend the roast. What I have
> found is that the rate of rise curve with the gun @ 400f does not
> change once the gun is pulled. The rate flattens out to approximately
> the same slope.
> I have run the gun later in the roast. When I do this I increase the
> temp but not over 500f.
> One nice thing about this approach, when I started this morning it was
> 55 in the roasting room. I believe you can make up some of the ill
> effects of a unheated roasting environment using this technique.
> Obviously, we can shorten the times between C1 and C2, or ramp up the
> C1 to C2 temps fairly quickly, should that be desired.
> The nicest thing about using these techniques I don't have to deal
> with the lag we associate whit electric roasters. The gun is instant
> with pinpoint adjust ability.
> One last thing, I have the roaster and the gun plugged into the same outlet.
> From a taste standpoint, the first batch turned out fantastic. I
> expect these follow on batches to be excellent as well. I would
> appreciate it of others would validate my findings or assist in the
> refinement of my findings.
> Comments are welcome here.
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