Dosing and grinding for Expobar Brewtus IV-R
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- Posts: 35
- Joined: 8 years ago
Hi Everybody,
I've just received my Expobar Brewtus IV-R and Baratza Vario. Trying to make a perfect shot. No much success so far. The extraction is too quick/light. I've started dosing 14-18 grams for the double shot. It was still not good. Raised up to 21. Tried different grind settings, from 2Q to 2A. Still dont see my desired density and nice extraction strips. The temperature is 201.
I'd appreciate if you guys can give some suggestions.
Thanks,
Ruben
I've just received my Expobar Brewtus IV-R and Baratza Vario. Trying to make a perfect shot. No much success so far. The extraction is too quick/light. I've started dosing 14-18 grams for the double shot. It was still not good. Raised up to 21. Tried different grind settings, from 2Q to 2A. Still dont see my desired density and nice extraction strips. The temperature is 201.
I'd appreciate if you guys can give some suggestions.
Thanks,
Ruben
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- Posts: 806
- Joined: 9 years ago
You may just need to calibrate the Vario. It's very sound dependent to know where the motor is straining. Barbara has a video online and they say to set the straining point in the middle fineness on the 1 macro setting.
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Alex
Home-Barista.com makes me want to buy expensive stuff.
Alex
Home-Barista.com makes me want to buy expensive stuff.
- Viernes
- Posts: 266
- Joined: 15 years ago
Then start from 1W and continue to grind finer until do a least 25 seconds shot time. Also you can try to fill the hopper instead of single dosing if that's what are you doing now...
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- Posts: 35
- Joined: 8 years ago
Those were Zoka beans from a white pack. Not sure when they were roasted.SonVolt wrote:What kind of beans? When were they roasted?
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- Posts: 35
- Joined: 8 years ago
Could you please elaborate more on this? By saying calibrate do yo mean to choose the right setting or there is a different knob available on the grinder to calibrate? Where can I find that video?spearfish25 wrote:You may just need to calibrate the Vario. It's very sound dependent to know where the motor is straining. Barbara has a video online and they say to set the straining point in the middle fineness on the 1 macro setting.
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- Posts: 35
- Joined: 8 years ago
Will try that. I was thinking that by doing single dosing it would be easier to identify parameters since at least the weight would be constant.Viernes wrote:Then start from 1W and continue to grind finer until do a least 25 seconds shot time. Also you can try to fill the hopper instead of single dosing if that's what are you doing now...
I still cant find the answer regarding the weight of the double shot. Different sources give different numbers. Will this be different based on the grind level?
- Viernes
- Posts: 266
- Joined: 15 years ago
There are several videos on youtube about vario calibration.Rubenhak wrote:Could you please elaborate more on this? By saying calibrate do yo mean to choose the right setting or there is a different knob available on the grinder to calibrate? Where can I find that video?
However I'll only do it if you can't grind fine enough. Try first if you can pull for example 35 seconds shots, if not, you'll need calibration. Also try with diffent coffees to run out of equation bad beans. And usually full hoppers instead of single dosing requires minor settings to achieve long shots.
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- Posts: 35
- Joined: 8 years ago
Folks, thanks for the reply, I managed to do the calibration.
I have few followup questions. The shot length can be controlled by the grind setting as well as the amount of the coffee. From what I've learned is that the extraction duration (counting from the first drop to fill 2oz for double shot) should be between 20-30 seconds. The amount of coffee should be 16-18 grams. So by choosing different grind settings one can get to the 20-30 seconds by altering the coffee weight. My question is what is the "right" way to go?
Thanks,
Ruben
I have few followup questions. The shot length can be controlled by the grind setting as well as the amount of the coffee. From what I've learned is that the extraction duration (counting from the first drop to fill 2oz for double shot) should be between 20-30 seconds. The amount of coffee should be 16-18 grams. So by choosing different grind settings one can get to the 20-30 seconds by altering the coffee weight. My question is what is the "right" way to go?
Thanks,
Ruben