Hey guys,

Is there any manual bean roaster that I can buy in local shop?

Thank you.

A dedicated coffee roaster? Don't think so, though with all the online shops you can easily have one delivered to your doorstep from many parts of the world.

ooo.... I forgot ...the last coffee expo Dankoff had a fluidbed on display. Pretty big & bulky for a small amount of beans though. I guess you can check that one too.

Non-dedicated there's always a popcorn popper, heat gun, whirley-pop, oven or even a wok.....

Looking for a simple one something like this actually,
http://www.auvelcraft.co.jp/coffee/

Hmmm.... interesting cube shape to eliminate the use of vanes/paddles. Such a design would mean the distance between the beans and the heat source keeps changing though....would that make a difference?

If this level of manual roasting is what you are looking for:

220V /110V Electric Stainless Steel Coffee Roaster Used In Gas Stove Or Electric Stove

Furthermore this unit has a motor.

Interesting design.

Looks pretty messy since the chaffs are flying around.
I guess it is meant to be used outdoor.

I would take a long consideration about the cost because you're going to get tired of it very quickly and look for upgrades
If it's cheap then sure, worse case it's still a nice deco item after you've moved on.

Otherwise, a popcorn machine will serve you better - no need manual hand turning and a separate stove

Just managed a first roast with Artisan logging on a Raspberry Pi. What an experience!

Learning points:
- touch screen - tak boleh pakai lah... with gloves (duh!)
- remote screen on phone via VNC - tak boleh pakai lah ... screen size & the need to scroll around serious usability problem
- Mastech 6514 temperature meter - connects to the Raspberry Pi via Artisan natively - Win!

Best feature:
- Phases LCDs - ability to continuously calculate expected times to reach the end of each phase is super super convenient!

Next things to do:
- really need to relocate the ET probe - temperature went up to 600C!!
- dedicated keyboard, monitor & mouse

and of course.... tweak the roast profile!

Nice! Enjoy the journey bro
Are you able to "try" the beans during roasting? Just making sure you mark yellow/end of dry correctly

Yes; the roaster comes with a tryer. However I can't seem to find a "definitive" characteristic or set of characteristics to identify when this happens. This is very different from the cracks, which can be heard.

I currently set my drying phase to end at 150c, since my FCs is around 200c on this thermocouple placement. This also corresponds with the Maillard reaction temperature, being between 140c to 165c.

Any suggestions?

Use your nose. Drying phase has a distinct fresh cut grass or hay aroma. The end of drying and start of yellow is marked by the color (of course) and the start of nutty or fresh baked bread aroma
This is why the tryer is so important - smell

For me this is ~170C where 1C is at 202C on my probe

hello,
anybody using a huky?

lowkl
thanks for the info.
the kaldi wide capacity is 300g right?
what might be the reason for adding a speed controller?
is the power or torque stated/ printed on the gearmotor?

roasted beans are getting costlier...
am considering to build a roaster to do some home roasting


This post has been edited by built: Nov 2 2017, 10:41 AM

Rated & tested capacity is 300gm. I doubt you can exceed 350g without beans spilling out of the rotating drum during a roast. On the other end I wouldn't do much less than 300gm as the thermometer/thermocouple readings would differ as contact with the beans may not be optimal.

Btw 300gm green gives you 250gm roasted, plus or minus max 6gm depending on roast level.

Reading the huge body of discussions pertaining to drum roasters, there doesn't seem to be consensus over the need to control drum rotation speed. IMHO the rotation is purely to ensure even heat and air distribution. As such I haven't bothered to mod the motor to control the speed.

I will check on the motor specs and revert.

Are you thinking of building your own?

thanks.

finding someone/ shop that is willing to do the fabrication and
testing would be the challenge. might end up with just buy a simple
one to try out first.

This post has been edited by built: Nov 2 2017, 01:07 PM

If you know the Ikawa then you know it's an elaborated pop corn popper roaster
If you're good with AutoCad/Sketchup and have acces to material and fabrication, makes more sense to hack/upgrade a popcorn roaster

I'm actually working on that but very very slow progress

was looking at poppers; there are a few good ideas on youtube.
but the 1200w thingy, power guzzler, puts me off...

zero knowledge on acad.
asked; but "too small" for fabshop.

guess i'll have to start with a drum/ cage sourced from ebay.
or just buy the cage type roaster with the ac gearmotor to start.

That's why gas roasters exists haha. For cost purposes. Also for the ability to drop/raise quickly

yeah...
stovetop is a simple and relatively cheaper option to start.

Actually, 1200w isn't too high an impact in terms of electricity. Most roasts are under 20 minutes including pre-heating, and doing back-to-back roasts means even shorter times. Furthermore, for some reason fluid-bed roasting is super super fast.... in fact, when I was doing it the big challenge was how to slow down the whole process!

It's about 57sen per KWh at the highest band TNB rate right now, so 1200w x 20 minutes(1/3 of an hour) = 0.4KWh which works out to be 22.8 sen per roast or lower.

HOWEVER....

I tried using my Kaldi Wide with a heat gun as a heat source; kind of a mix between a drum roaster and a hot-air fluid bed. My experience:

- in terms of ability to control the roast -- very good. I could easily control the heat and achieve my intended roast profile
- in terms of speed -- it could do super-fast roasts... all the way to 2C within 8 minutes!
- in terms of evenness -- very very good. All the beans were very evenly roasted

BUT.....

Yucks!! Bleahh!! I did about 6 roasts this way, and the taste for pretty much all of them was horrible! No flavour, no body. I tried short roasts, stretched out roasts similar to regular profiles, nothing worked!

So I'm back using gas....

you are correct.
i guess its phycologically when one sees 1200w...