Behmor

[Andy]

Soon.

Get your name on the list:
CoffeeSnobs - BeanBay - Other Stuff - Behmor Coffee Roaster

[jh001]

Andy, do you have an ETA yet on the Behmor?

[Andy]

Behind the side circuit board, attached to the chamber wall of the roaster, not to be confused with the thermistor.
....but as suggested a couple of days ago, please give it to an electrical guy if you don't know what you are doing.
240v can and will kill!!!!

[Michael_Harwood]

Hi

Recently my behmor lost power after about 400 odd roasts. I have been told there is a thermal fuse which can blow and will result in a loss of power. Now I have taken off the right hand side of the roaster and removed the circuit board but I am having trouble locating this thermal fuse. Is there anyone out there who has replaced this part and could provide a picture showing its location. I have got 600g of roasted coffee yet so I need to resolve this pretty quickly.

Cheers Mike

[Peter42]

There was a discussion a little while ago regarding the variance in temperature probe readings depending on their location in the Behmor... well I finally got off my lazy butt and took a screenshot to demonstrate:
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Typically the probe located under the chaff tray is far more useful - it gives repeatable results and consistent 1C and 2C temperatures when using the SAME profile.
#####
Anyway, there you have it. Unless you're sure your probe is in exactly the same location as another's probe, it's hard to compare them directly.

Fruity, yes, as long as the temperature of the air or of some metal is measured the position determines the form of the chart:
If it is a very early increase of the logged temp of the air, or the later and lower temp under the chaff tray - as this position is farther away from the heating.

If having the probe in contact with the beans the charts should be quite good comparable as I (we) hope that the beans have more or less the same temp. I placed a chart of my experiment in the in #913 mentioned -probe placement thread-.
This way it should be comparable with many non-Behmor-unsers as well.

From my point of view the last version is not complicated and possible for anybody having a drilling machine, but I am still thinking about a simple thing to make it even comfortable to insert the probe.
Peter

[fruity]

There was a discussion a little while ago regarding the variance in temperature probe readings depending on their location in the Behmor... well I finally got off my lazy butt and took a screenshot to demonstrate:



This a Guatemalan bean roasted on a P4 profile. The red line indicates a probe located in the "coffeesnobs spot", ie, the top back corner on the left-hand side of the machine. The blue line indicates a probe under the chaff tray, almost exactly in the middle (front-to-back and side-to-side). The difference between the two can be as much as 100 degrees.

Typically the probe located under the chaff tray is far more useful - it gives repeatable results and consistent 1C and 2C temperatures when using the SAME profile. If you use a different profile (ie, P2 instead of P3) you might find the temps off by a few degrees.

Anyway, there you have it. Unless you're sure your probe is in exactly the same location as another's probe, it's hard to compare them directly.

[Peter42]

I did it ! And it was quite easy.
Drilling through the axis and the housing,
Inserting the wire probe. A bit fumbling until it was inside the beans and outside the blades.
(Thanks for the hint that the probe must be in the beans).

As I hope for a vivid discussion I want to move this from this all around discussions to the specific thread:
How to monitor tempreture in a Behmor - Probe Placement

I hope this is not a faux pas.
Peter

[fg1972]

Hi Peter,
If the probe is not in contact with the beans measuring the actual bean temperature, then I don't see any benefit of having the probe inside the drum as it will just be measuring air temperature.
You may as well just mount the probe through the left wall near the drum and just measure the same or similar air temperature.
Measuring anything but the actual bean mass temperature is OK just as a reference but not really useful to determine stages of the roast.
For example, 1st crack may occur at approx 195 degrees bean temperature every time, but the air temp may read 250 one time, and 290 another time depending on lots of factors like ambient temp, air current fan circulation, batch size.
I've gone down the path of trying to software control the Behmor but without an accurate and repeatable bean temperature reference, its a bit like flying a plane in the dark without instrument navigation.
If you can come up with a mechanism of getting the bean temperature, I think its well worth the effort.

Cheers
Fiorello

[Peter42]

Thanks, you pointed out well the tricky points. In many forums the Behmor is blamed for giving no information about temperature. This CS has solved this in an easy and comparable version including all the equipment.

If the version with the probe within the axis works, then the probe hopefully would be even out of direct heating, shielded by the beans, getting the indirect radiation from beans and walls (at least with 1 pound filling).
For me, with the 3mm probe it will be a 3,5mm hole in the 5,7mm axis (at the support). I would feel saver, if the rigid probe keeps out of the beans.
What about just using a wire probe, hanging a bit down, coming closer to the beans, not afraid from bending? What about the insulation?
I also think about logging the energy input (heating) to see it compared to the temperature . Does anybody have an idea how accurate the measurement via Ampere should be for the Behmor (virtual energy vs effective energy). Ampere measurement can be done just by the normal equipment, otherwise it seems to get complicated or expensive.
(What finally counts is in the cup, but there are othe fulfillments of needs as well, especially for engineers )
Peter

[fg1972]

Hello and welcome Peter42,
Getting a probe to read inside the drum has been talked about a bit but I haven't seen anyone on here do it successfully.
Inside the left wall is pretty much empty so drilling shouldn't interfere with anything but don't take my word for it, look for yourself before even thinking about putting any holes in it.
If you do get a probe in the drum, it would need to also point down into the bean mass, clear the paddles and not rotate around the with the axis.
I'm not saying it can't be done, but it probably won't be as easy as drilling a hole in the axis and just poking a wire in there.
When I considered doing it, I was looking at using a shaft bent in the spape of a "J" with a bearing.
Good luck, and let us know how you go.

Cheers

[Peter42]

Does anybody have a feedback on results of a temperature probe installed through the axis of the axis of the drum, as described by ggoosen in #866 ?
I am thinking to try it this way as it seems quite manageable with not to much effort (just drilling) and it is neither close to the heating nor to the bottom.

I hope I can do it without ruining anything (thin remaining wall of the axis, nothing inside the left wall in this area?).
I would even try without any additional tube, just the inside hole in the wall fitting the probe diameter.
The next question for me is if I am curious enough to order another logging equipment to have a direct comparison.
Any results known, any hints?
Peter

[fruity]

12 month warranty supplied by coffeesnobs/beanbay. I think if you just need parts Andy sends them out, or if it's proper stuffed it's a return-to-base scenario.

Does that cover it?

[Phish_Phart]

Behmor warranty?

Hi
I'm a newbie here and have been looking at the Behmor roaster on the BeanBay page.
I can't find any information on the warranty that would go with it (how long, who will responsible for possible warranty issues).
Also I may be going blind but I can't find any contact information for BeanBay so I decided to post here.
Any information would be greatly appreciated

Cheers

[arenton]

Thanks everyone for your feedback. I think I will definitely be ordering a Behmor from Andy ... time to be nice to the wife ... for absolutely no reason (of course!!!!) ... I can feel an order coming on tomorrow!

Cheers.

Andrew

[Dimal]

As a newbie to home roasting, is the Behmor a good start - or go for the 'popcorn popper' method as an introduction??

The Behmor looks pretty cool!

Can highly recommend the Behmor and well suited to a potential CSer who may like to experiment later on down the track. For the money and the terrific service provided by Andy, it is very difficult to go past this little beauty.

Poppers are good too, especially if you can acquire one for nix or close to it. Since they're not really intended for Coffee Roasting duty though, they eventually break down; usually the fan disintegrates or starts spinning on the motor shaft (that's what happened to the four or five I owned anyway). Haven't replaced the last one yet but I do miss the ability to roast small batches of Robusta to add to some of my blends (which I enjoy).

You won't go wrong with the Behmor though, perfect piece of gear for the home-roaster...

Mal.