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Topic: update on turbo beast (a bit long) (52 lines)
1) From: petzul
Well, I think it is still too ugly to take pictures of, but it seems to 
work okay.
Today I took it all apart (again) and completely insulated the roasting 
chamber above the motor with inch thick fiberglass insulation.
Just packed it full and then put the bowl in and locked it in.
Since the bowl sticks out the top about 3 inches, I cut some aluminum 
flashing and some more insulation, and wrapped it around below the rim 
of the bowl, holding this 'bandage' on with one long screw clamp.
Also I insulated behind the control panel and wired that back into 
position. I cut the stainless tube off of my burned out walleyworld 
turkey fryer thermometer, and poked it through the side of the chamber, 
bent so it stays close against the side just above the mixer. This still 
needs to be mounted more permanently as it moves around with the mixing. 
The thermocouple goes through this small SS tube just fine though.
So now, although it is UGLY, the only thing hanging off of it is the 
thermocouple and power cord :-)
Then I ran it with no beans for a half hour, to make sure it would not 
die in the middle of a roast.
Then I roasted 200 Gr of Monsooned Malabar, to see if I could still do 
small batches.
Perfect!
Then had to roast 600 Gr of French Roast Blend from Tom.
Again, with this much of a load it doesn't matter as much, but I still 
need to bolt that thermocouple securely in place. Temps were definitely 
not correct, a bit high because the TC walked up on top of the beans, 
but I was able to control by sight and sound!
Yes!
SOUND!
All that added insulation quieted the machinery down enough so I can 
hear the cracks now!
So much easier than going by smoke and by guess  :-)
Adding insulation sure slowed down the cooling. Now I do not have to 
worry about cooling too fast at all. As a matter of fact, when the beans 
have cooled below 100F in about 3 minutes, with my high speed hair 
dryer, the chamber is still too hot to touch comfortably. Can't tell yet 
if this is good or bad.
There is no problem doing one roast after another with this machine. 
And, since you cool each roast in the roaster, it is better to preheat 
again before you add the next batch. Nothing melts either ;-)
Have not used my air popper since I got this running.
Coffee is better now, imho.
PeterZ
Happily roasting for real, here in LHC.


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