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Breville Dual Boiler BES900XL Owners Thread
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dana_leighton
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Posted Fri Apr 26, 2013, 2:53pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

AlexKilpatrick Said:

Is there any reason to think that having the boiler over the group head is bad?  Seems like a great idea to me - it minimized the temperature drop between the boiler and the group head since the water only travels a fraction of an inch.   It also has the side effect of acting like a group head heater.

Posted April 26, 2013 link

No there is no reason to think it's a bad design. It is a good design for the reasons you elucidate.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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BubbaDude
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Posted Fri Apr 26, 2013, 3:02pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

AlexKilpatrick Said:

Is there any reason to think that having the boiler over the group head is bad?  Seems like a great idea to me - it minimized the temperature drop between the boiler and the group head since the water only travels a fraction of an inch.   It also has the side effect of acting like a group head heater.

Posted April 26, 2013 link

I've had a couple of Francis Francis X1s with that design, and the drawback I noticed was the tendency of the boiler to overhead the brewgroup when left on for too long, but that's more a consequence of the lack of any meaningful temperature controls in non-PID'ed SBDU machines. I believe the saturated brew groups in the La Marzocco GS/3 and its ilk accomplish a similar purpose, namely achieving temperature stability across the water path throughout the shot. The brew group may need to be heated a little higher than the boiler due to its exposure to the air to achieve path uniformity, so I can see an argument for de-coupling it from the brew water temp at the origin. The HX uses the steam boiler to heat the brew group, which is the reason you need the cooling flush. The steam boiler is 20 to 30 degrees F hotter than the brew temp.

Whatever the reasoning, the BDB manages to achieve remarkable temperature stability in the real world.

 
"I've Scaced many HX/E61 machines, seeing shot variances of up to 8-10F or more. [The BDB] stays within 1F." - Mark Prince
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cuznvin
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Posted Fri Apr 26, 2013, 4:17pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

The Bezzera BZ07 also has a heated grouphead. I think the Breville is the only DB that has this. It would be nice to see this on some other Dual Boilers..maybe the electronic ones that dont have levers on the E61 or even a sensor that would stop the flow of the water from the thermosyphon.. Does that make any sense?
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CSME9
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Posted Fri Apr 26, 2013, 8:12pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

Does the B model BDB steam any stronger/better than the A model ?
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donner
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Posted Fri Apr 26, 2013, 8:56pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

CSME9 Said:

Does the B model BDB steam any stronger/better than the A model ?

Posted April 26, 2013 link

Is someone having an issue with steam power on the A model?  Based on my experience, steaming can't get much better than on the A model.  It's quick, and the force of the steam is excellent.
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BubbaDude
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Posted Fri Apr 26, 2013, 9:44pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

CSME9 Said:

Does the B model BDB steam any stronger/better than the A model ?

Posted April 26, 2013 link

Subjectively, it seems like it may be a little faster, but I didn't measure the /A. It's at least as good, which is good enough for my daily cappuccino.

 
"I've Scaced many HX/E61 machines, seeing shot variances of up to 8-10F or more. [The BDB] stays within 1F." - Mark Prince
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B747VET
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Joined: 12 Mar 2013
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Espresso: BES900XL/B
Posted Fri Apr 26, 2013, 11:20pm
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

BubbaDude Said:

Subjectively, it seems like it may be a little faster, but I didn't measure the /A. It's at least as good, which is good enough for my daily cappuccino.

Posted April 26, 2013 link

Ditto...
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falconee
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Posted Sat Apr 27, 2013, 2:28am
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

I just got my A/ Machine... First impressions.. makes a nice cup steam is preety good as well..

The portafilter is a feather weight compared to my 20 year old Brasilla Machine.. and the filter basket from my old machine is much better more holes and seals better..

I can't avoid the puck sticking to the machine every time though... its my only gripe..


Long term reliability is still out on this one...

Do you guys backflush with cafeza more often than the machine recomends?
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carz07
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Posted Sat Apr 27, 2013, 3:02am
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

falconee Said:

I just got my A/ Machine... First impressions.. makes a nice cup steam is preety good as well..

The portafilter is a feather weight compared to my 20 year old Brasilla Machine.. and the filter basket from my old machine is much better more holes and seals better..

I can't avoid the puck sticking to the machine every time though... its my only gripe..


Long term reliability is still out on this one...

Do you guys backflush with cafeza more often than the machine recomends?

Posted April 27, 2013 link

try the 18-19g dose that should dry the puck

just do the whiggle thing for regular cleaning

 
Travel the world with a cup of coffee
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carz07
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carz07
Joined: 20 Oct 2012
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Location: Philippines
Expertise: I live coffee

Espresso: Breville Dual Boiler
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Posted Sat Apr 27, 2013, 3:30am
Subject: Re: Breville Dual Boiler BES900XL Owners Thread
 

im planning to get a vst ridgeless basket

my plan is to dose 15g

what do you suggest 15g or 18g basket?

how about the shower screen distance when i dose 15g on a 18g basket?

your suggestions guys

 
Travel the world with a cup of coffee
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