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Topic: Thermocouple in BBQ WAS: New Toys (long) (10 msgs / 258 lines)
1) From: Jason Molinari
Joe, i set up my thermocouple using a fiberglass insulated TC, so that it was rather flexible. I put some weight on it, and used it like a fishing weight in the bean mass, just threw the slug/TC in there...it worked GREAT at 6rpm, it was slow enough that the TC/slug would just sit in the bean mass, and drop off the stirring vanes as they went around. At 57rpm though the slug didn't fall off the vanes fast enough and it got thrown over the rod, which then proceeded to rip my TC.... 
I'll think of another method, just will take me a few days to get it done... probably will end up putting something that looks like a fishing rod along the center axis of the BBQ, and have the TC hang from that..
jason
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2) From: Ed Needham
How about a rigid tube with the TC inside?  Stick it in and mount it in a way
that it doesn't rotate.  I use a 12" dial thermometer to do exactly the same
thing, and I get good readouts that way.
*******************************
Ed Needham
To Absurdity and Beyond!
homeroaster ... d.o.t ... com
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3) From: Joseph A. Feliciani
Hi Ed,
I use an RK Drum and it doesn't have an opening like your drum. I can't
think of a way to mount it without the TC dipping in and out of the bean
mass, which means the TC will twist as it rotates around.
Joe
RK Drum #9,RK Gear Motor #?,Solis Maestro +,*$ Proteo Barista,Spidem Trevi
Digital +

4) From: Jason Molinari
I usually dont roast more than 1lb, which is barely enough to cover the stirring vanes, if at all, so the thermometer couldn't be rigid and in the bean mass since the vanes would knock into it.
jason
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5) From: Joseph A. Feliciani
I typically roast 2lbs and will start to roast up to 4lbs once or twice a
month in a couple of weeks.
I guess I could rubber band the TC controller to the handle of the spit rod
and have it rotate with the drum, but I'm thinking it would be hard to read
:)
Joe

6) From: Jason Molinari
sometimes i would like to do 2 or 3 lbs, but i like to try different blends, so i make 1 lb which lasts me a little over 2 weeks... freeze 1/2 lb and use the other.
jason
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7) From: Joseph A. Feliciani
Hi Jason,
The advantage for me is that I roast for my office which allows me to
roast the larger amount and it is usually gone in 1 to 2 weeks. That
allows me to taste that particular roast as it "ages" over that week and
gives me time to decide what to roast next.
Joe
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8) From: Ed Needham
Maybe I'm just realllllly slow and tired tonight, but how do you put any kind
of thermocouple in an RK drum with both ends closed?
*******************************
Ed Needham
To Absurdity and Beyond!
homeroaster ... d.o.t ... com
*******************************

9) From: Ed Needham
You'd have to cut away an inch or so of each vane so the probe could have a
place to stick into the beans without it getting mangled.  My thermal probe
sticks into the beans that ride inside the sloped end piece.
*******************************
Ed Needham
To Absurdity and Beyond!
homeroaster ... d.o.t ... com
*******************************

10) From: Joseph A. Feliciani
Hi Ed,
You're not slow tonight - I was just responding that my drum is not like
yours. The RK Drum is closed on both ends. I can not think of anyway to
mount a TC in it. I think I'm limited to the heated air temp within the
closed bbq somewhere near the middle of the drum. I will probably insert the
TC probe in some type of metal tubing and mount it in a fixed position once
I discover the best place to take its temperature.
Joe


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