Coretto cover project

[saoye]

Ahhhhh
That should make it easy then! You'll just need to deal with the backlash in the rotary dial :-)

I think so. I'm sure after a few more roasts I'll get the hang and get a better looking roast profile. I've added the other two part of 5 part video just to complete the picture.

Corretto Coffee Roaster Chimney cover coffee roasting part 3 - YouTube
Corretto Coffee Roaster Chimney cover coffee roasting part 5 - YouTube

[sando]

Have now done 10 roasts since covering and insulating.
The results are very encouraging. (should have done long ago - well worth the effort!!

Besides using less heat and less fan (see heat settings on #80 all on fan 2 - Bosch PHG630 HG)

One things that sticks out is the consistent colour of the roasted beans.

see pic and profiles of Roasts 79 and 80.

Am drinking 79 at the moment and it is just brilliant.

Happy roasting.

[Yelta]

Have now done 10 roasts since covering and insulating.
The results are very encouraging. (should have done long ago - well worth the effort!!

Besides using less heat and less fan (see heat settings on #80 all on fan 2 - Bosch PHG630 HG)

One things that sticks out is the consistent colour of the roasted beans.

see pic and profiles of Roasts 79 and 80.

Am drinking 79 at the moment and it is just brilliant.

Happy roasting.

[ATTACH=CONFIG]1283[/ATTACH]

Remarkably similar to my profiles Sando.
I start all of my roasts @ room temp, 725grams, HG setting 2 between 500 & 550C, FC always @ approx 14 mins 200C plus or minus 1C, how do these HG settings compare to yours, given you are using an insulated pan & I'm not.
I stop my roasts @ between 225 & 230C @ approx 19 to 20 mins, sometimes I reach 2nd crack sometimes not.

[saoye]

Have now done 10 roasts since covering and insulating.
The results are very encouraging. (should have done long ago - well worth the effort!!

Besides using less heat and less fan (see heat settings on #80 all on fan 2 - Bosch PHG630 HG)

One things that sticks out is the consistent colour of the roasted beans.

see pic and profiles of Roasts 79 and 80.

Am drinking 79 at the moment and it is just brilliant.

Happy roasting.

[ATTACH=CONFIG]1283[/ATTACH]

Look at that stable and constant per minute temp. rate rise (graph underneath the main graph)! I guess that is the difference between the Ozito and the bosch 630. how many times during the roast did you have to increase the temp on the gun?

[sando]

Look at that stable and constant per minute temp. rate rise (graph underneath the main graph)! I guess that is the difference between the Ozito and the bosch 630. how many times during the roast did you have to increase the temp on the gun?

Have a look at the red heat line on graph #80. The temps are 1/10 of actual HG temp.
Ie. 33=330 C etc

Not to forget operator skill!!!! Lol.

[saoye]

Have a look at the red heat line on graph #80. The temps are 1/10 of actual HG temp.
Ie. 33=330 C etc

Not to forget operator skill!!!! Lol.

I wonder if you could maintain that using the Ozito. It really isn't a precision tool. I might try a gentler curve as per your roast profile, see if that will help with the control.

[DesigningByCoffee]

Remarkably similar to my profiles Sando.
I start all of my roasts @ room temp, 725grams, HG setting 2 between 500 & 550C, FC always @ approx 14 mins 200C plus or minus 1C, how do these HG settings compare to yours, given you are using an insulated pan & I'm not.
I stop my roasts @ between 225 & 230C @ approx 19 to 20 mins, sometimes I reach 2nd crack sometimes not.

Hi Yelta
I use a Bosch gun too with a lidded/insulated pan, ending up with a similar profile. I very rarely go over 450deg fan iii on mine. I'm also able to start off more gently and build the heat up to that. (prewarm @ 180. , then ramp 350, 400, and 450, back to 400 at 1c, back to 350 end rolling 1C).
I just find it's a much more gentle roast with the insulated pan (avoiding scorching & uneven roasts IMHO)
Matt

[DesigningByCoffee]

Have a look at the red heat line on graph #80. The temps are 1/10 of actual HG temp.
Ie. 33=330 C etc

Not to forget operator skill!!!! Lol.

Hi Sando
How did you log that red temp graph on #80? Was that your manual input based on your ozito profiling? Or did you use a second DMM?

[sando]

Hi Sando
How did you log that red temp graph on #80? Was that your manual input based on your ozito profiling? Or did you use a second DMM?

Hi Matt

Only one probe. I manually moved the slider then change the temp on the gun.
BTW I have a friend who is an elec engineer and intend to involve him and work out how to connect the HG to the slider.
Any ideas ??

Happy roasting

[DesigningByCoffee]

Hi Sando
LOL!
I'm very sorry - that's for guys with propeller caps! Bit beyond my pay scale!

I guess there must be a way (if you're using a Bosch type gun with digital scale) of sending the digital screen signal (ie that shows up '340deg') to the software to be recorded when you change settings. But you'd need to break into the gun and then have some type of transfer signal doovawhacker and possible software coding.

Might be simpler IMHO if you wanted to automatically log al your inputs to get a second DMM (I think Andy's software handles multiple probes) and log the inlet temp at the nozzle of the gun/ or into the pan. That would have the advantage of also giving a more 'generic' reading rather than gun specific data - making it easy to compare notes with others.

This is kind of what I had in mind with the 'input temperature profiling' thread idea. This actually worked quite well for comparing notes with my bro who uses a non-digital makita… instead of settings, we logged and compared inlet port temps. My 250deg and his 250deg are pretty similar in reality (just minor variables in fan speed) it's just that they're achieved different ways.

But I reckon your software slider seems pretty flash - I'm still using pen and paper to do the same thing!

Anyway… nice day for a roast … !
Matt

[sando]

Hi Sando
LOL!
I'm very sorry - that's for guys with propeller caps! Bit beyond my pay scale!

Well you know what they say about the cap fitting!!


cheers

will keep you posted on progress.....

[saoye]

I wonder if you could maintain that using the Ozito. It really isn't a precision tool. I might try a gentler curve as per your roast profile, see if that will help with the control.

You know that feeling you get when you discovered your equipment is not working as well as it should? Well, it nagged at me and when a used Makita HG6020 popped up in the market place I nabbed it for cheap. Just did a roast and...you know that feeling you get when an equipment works exactly the way it should?

[DesigningByCoffee]

You know that feeling you get when you discovered your equipment is not working as well as it should? Well, it nagged at me and when a used Makita HG6020 popped up in the market place I nabbed it for cheap. Just did a roast and...you know that feeling you get when an equipment works exactly the way it should?

He shoots - he scores! Great find - look forward to your roasting notes :-)
Matt

[TJM]

Hi Sando
Has your friend come up with anything yet?
I also do the same as you, adjust the temp on the Bosch heat gun and then move the slider to record change, it would be great if there was some way of connecting the heat gun to the Roast Monitor so you only need to do one or the other. Either move the slider and that adjusts the heat gun temp or if you could adjust the heat gun temp manually and have the Roast Monitor log the change.

TJM

[sando]

Hi TJM
Not as yet.
He is coming around for xmas lunch, so no doubt the topic at some stage will turn to 'roasting'.
It can be done....Its just a matter of how much really and which model Cray Supercomputer will be required!!
What ever he says I will post in good faith.
Cheers
Sando