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Date: 23 Feb 2007 16:22:50
From:
Subject: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?
Does anyone know if it is possible to retrofit old (pre-2006) Rancilio
Silvia with the new, adjustable OPV?

I've seen the part available at:
http://espressoparts2.zoovy.com/product/R_1406

Is this part compatable with older Silvias? If so, is this something
that somebody could reasonable do themselves? Is there a site similar
to the pressure mod site below that show how to do this?

http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html





 
Date: 24 Feb 2007 22:56:40
From:
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?
On Feb 23, 7:43 pm, "Craig Andrews" <alt.cof...@deletethis.rogers.com >
wrote:
> <chuck.f...@gmail.com> wrote in message
>
> news:1172276570.161812.245430@t69g2000cwt.googlegroups.com...
>
> > Does anyone know if it is possible to retrofit old (pre-2006) Rancilio
> > Silvia with the new, adjustable OPV?
>
> > I've seen the part available at:
> >http://espressoparts2.zoovy.com/product/R_1406
>
> > Is this part compatable with older Silvias? If so, is this something
> > that somebody could reasonable do themselves? Is there a site similar
> > to the pressure mod site below that show how to do this?
>
> >http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html
>
> Hey Chuck, yes a direct replacement. I'm in the process of doin' that
> right now!
> Craig.

Yes, I'd definitely like a report. I haven't done any mods on my
machine yet, so I'll be interested to hear how it goes. The one thing
that worries me is that there is a connection to the boiler, so I
didn't know if that would be dangerous or tricky. I'm only moderately
machanically inclined, so I'm much better if I have some directions to
follow!



  
Date: 25 Feb 2007 07:08:48
From: daveb
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?
A look inside will help.

It involves pulling off a hose and unscrewing the part. that's all.

I'd like to know if it make a whit of a difference.

regards
dave


<chuck.ford@gmail.com > wrote in message
news:1172386600.038952.98770@a75g2000cwd.googlegroups.com...
> On Feb 23, 7:43 pm, "Craig Andrews" <alt.cof...@deletethis.rogers.com>
> wrote:
>> <chuck.f...@gmail.com> wrote in message
>>
>> news:1172276570.161812.245430@t69g2000cwt.googlegroups.com...
>>
>> > Does anyone know if it is possible to retrofit old (pre-2006) Rancilio
>> > Silvia with the new, adjustable OPV?
>>
>> > I've seen the part available at:
>> >http://espressoparts2.zoovy.com/product/R_1406
>>
>> > Is this part compatable with older Silvias? If so, is this something
>> > that somebody could reasonable do themselves? Is there a site similar
>> > to the pressure mod site below that show how to do this?
>>
>> >http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html
>>
>> Hey Chuck, yes a direct replacement. I'm in the process of doin' that
>> right now!
>> Craig.
>
> Yes, I'd definitely like a report. I haven't done any mods on my
> machine yet, so I'll be interested to hear how it goes. The one thing
> that worries me is that there is a connection to the boiler, so I
> didn't know if that would be dangerous or tricky. I'm only moderately
> machanically inclined, so I'm much better if I have some directions to
> follow!
>




   
Date: 26 Feb 2007 19:31:03
From: Craig Andrews
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?

"daveb" <davebobblane@gmail.com > wrote in message
news:12u2v2krg6p8td8@corp.supernews.com...
>A look inside will help.
>
> It involves pulling off a hose and unscrewing the part. that's all.
>
> I'd like to know if it make a whit of a difference.
>
> regards
> dave
>


I installed my Rancilio OPV on Sun Feb 25th & dialed it in to a
stagnation pressure of 10.5 bars (154 - 157psi) & a dynamic pressure of
9 - 9.5 bars (135 - 140psi). I didn't have any coffee to be able to test
out Silvia, but I may be able to do so in 1 hrs.

I'm looking forward to it! {;-)
Cheers!
Craig.


>
> <chuck.ford@gmail.com> wrote in message
> news:1172386600.038952.98770@a75g2000cwd.googlegroups.com...
>> On Feb 23, 7:43 pm, "Craig Andrews"
>> <alt.cof...@deletethis.rogers.com>
>> wrote:
>>> <chuck.f...@gmail.com> wrote in message
>>>
>>> news:1172276570.161812.245430@t69g2000cwt.googlegroups.com...
>>>
>>> > Does anyone know if it is possible to retrofit old (pre-2006)
>>> > Rancilio
>>> > Silvia with the new, adjustable OPV?
>>>
>>> > I've seen the part available at:
>>> >http://espressoparts2.zoovy.com/product/R_1406
>>>
>>> > Is this part compatable with older Silvias? If so, is this
>>> > something
>>> > that somebody could reasonable do themselves? Is there a site
>>> > similar
>>> > to the pressure mod site below that show how to do this?
>>>
>>> >http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html
>>>
>>> Hey Chuck, yes a direct replacement. I'm in the process of doin'
>>> that
>>> right now!
>>> Craig.
>>
>> Yes, I'd definitely like a report. I haven't done any mods on my
>> machine yet, so I'll be interested to hear how it goes. The one
>> thing
>> that worries me is that there is a connection to the boiler, so I
>> didn't know if that would be dangerous or tricky. I'm only
>> moderately
>> machanically inclined, so I'm much better if I have some directions
>> to
>> follow!
>>
>
>



    
Date: 26 Feb 2007 23:33:44
From: Craig Andrews
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?

"Craig Andrews" <alt.coffee@deletethis.rogers.com > wrote in message
news:54hce9F1vutmeU1@mid.individual.net...
>
> "daveb" <davebobblane@gmail.com> wrote in message
> news:12u2v2krg6p8td8@corp.supernews.com...
>>A look inside will help.
>>
>> It involves pulling off a hose and unscrewing the part. that's all.
>>
>> I'd like to know if it make a whit of a difference.
>>
>> regards
>> dave
>>
>
>
> I installed my Rancilio OPV on Sun Feb 25th & dialed it in to a
> stagnation pressure of 10.5 bars (154 - 157psi) & a dynamic pressure
> of 9 - 9.5 bars (135 - 140psi). I didn't have any coffee to be able to
> test out Silvia, but I may be able to do so in 1 hrs.
>
> I'm looking forward to it! {;-)
> Cheers!
> Craig.


Well, I just KNEW that there was gonna be a hell of a difference in the
shot quality of the Black Cat that I'm using. On my May 2001 Rancilio
Miss Silvia, the OPV valve pressure that I didn't know what is was till
Fri Feb 23/07 when I completed my portafilter pressure assembly with
needle bleed valve., is/was 170 psi! or 11.6 bars. So my readjusted
dynamic pressure is 135 - 140psi, a drop of 30 - 35psi or 2.04 -
2.38/2.4 bar. Quite significant IMO.

VERY MUCH sweeter tasting, smoother, no harshness, no blonding, & due to
the lower extraction pressure drop from 17.7% - 23.5%., & from my
previous grinder setting I had to go 3 notchs coarser or approx 30%.

The very first shot I forgot to readjust my grinder & pulled a very
sweet, intense ristretto 1oz with 16 - 17 grams of Black Cat., slightly
under dosed La zocco style (Ascaso of Spain) ridgeless double basket.
Second re-adjusted shot was right on the money, same basket., 18 grams
of BC & 1.8 - 2oz.

Brad Ford, the Canadian Intelligentsia rep for Canada recommends &
Chicago Intelly recommends running 199.5F/~93C at the grouphead for
Black Cat, roughly the same for KidO. They use a Cirqua system to get
the water close to SCAA spec and run the pumps dialed back to about 8.2
bar as well. That's what they were running at the Toronto HostEx show as
well on a brand spanking new La Spaziale Vivaldi S1.
http://www.hostexshow.com/

I was running 198 - 199F at the grouphead & a little more than 1 bar
more pressure (1.3bar more). I wanted to err a little on the high than
low pressure side.

I PID'd my machine on June 24th, & the new Rancilio OPV on Sun Feb 25th,
dam I WISH I had'a done., or had the money to do the pressure mod then!
Cheers,
Craig.




>
>
>>
>> <chuck.ford@gmail.com> wrote in message
>> news:1172386600.038952.98770@a75g2000cwd.googlegroups.com...
>>> On Feb 23, 7:43 pm, "Craig Andrews"
>>> <alt.cof...@deletethis.rogers.com>
>>> wrote:
>>>> <chuck.f...@gmail.com> wrote in message
>>>>
>>>> news:1172276570.161812.245430@t69g2000cwt.googlegroups.com...
>>>>
>>>> > Does anyone know if it is possible to retrofit old (pre-2006)
>>>> > Rancilio
>>>> > Silvia with the new, adjustable OPV?
>>>>
>>>> > I've seen the part available at:
>>>> >http://espressoparts2.zoovy.com/product/R_1406
>>>>
>>>> > Is this part compatable with older Silvias? If so, is this
>>>> > something
>>>> > that somebody could reasonable do themselves? Is there a site
>>>> > similar
>>>> > to the pressure mod site below that show how to do this?
>>>>
>>>> >http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html
>>>>
>>>> Hey Chuck, yes a direct replacement. I'm in the process of doin'
>>>> that
>>>> right now!
>>>> Craig.
>>>
>>> Yes, I'd definitely like a report. I haven't done any mods on my
>>> machine yet, so I'll be interested to hear how it goes. The one
>>> thing
>>> that worries me is that there is a connection to the boiler, so I
>>> didn't know if that would be dangerous or tricky. I'm only
>>> moderately
>>> machanically inclined, so I'm much better if I have some directions
>>> to
>>> follow!
>>>
>>
>>
>



     
Date: 27 Feb 2007 20:32:14
From: Craig Andrews
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?

"Craig Andrews" <alt.coffee@deletethis.rogers.com > wrote in message
news:54hqn2F20lgelU1@mid.individual.net...
>
> "Craig Andrews" <alt.coffee@deletethis.rogers.com> wrote in message
> news:54hce9F1vutmeU1@mid.individual.net...
>>
>> "daveb" <davebobblane@gmail.com> wrote in message
>> news:12u2v2krg6p8td8@corp.supernews.com...
>>>A look inside will help.
>>>
>>> It involves pulling off a hose and unscrewing the part. that's all.
>>>
>>> I'd like to know if it make a whit of a difference.
>>>
>>> regards
>>> dave
>>>
>>
>>
>> I installed my Rancilio OPV on Sun Feb 25th & dialed it in to a
>> stagnation pressure of 10.5 bars (154 - 157psi) & a dynamic pressure
>> of 9 - 9.5 bars (135 - 140psi). I didn't have any coffee to be able
>> to test out Silvia, but I may be able to do so in 1 hrs.
>>
>> I'm looking forward to it! {;-)
>> Cheers!
>> Craig.
>
>
> Well, I just KNEW that there was gonna be a hell of a difference in
> the shot quality of the Black Cat that I'm using. On my May 2001
> Rancilio Miss Silvia, the OPV valve pressure that I didn't know what
> is was till Fri Feb 23/07 when I completed my portafilter pressure
> assembly with needle bleed valve., is/was 170 psi! or 11.6 bars. So my
> readjusted dynamic pressure is 135 - 140psi, a drop of 30 - 35psi or
> 2.04 - 2.38/2.4 bar. Quite significant IMO.
>
> VERY MUCH sweeter tasting, smoother, no harshness, no blonding, & due
> to the lower extraction pressure drop from 17.7% - 23.5%., & from my
> previous grinder setting I had to go 3 notchs coarser or approx 30%.
>
> The very first shot I forgot to readjust my grinder & pulled a very
> sweet, intense ristretto 1oz with 16 - 17 grams of Black Cat.,
> slightly under dosed La zocco style (Ascaso of Spain) ridgeless
> double basket. Second re-adjusted shot was right on the money, same
> basket., 18 grams of BC & 1.8 - 2oz.
>
> Brad Ford, the Canadian Intelligentsia rep for Canada recommends &
> Chicago Intelly recommends running 199.5F/~93C at the grouphead for
> Black Cat, roughly the same for KidO. They use a Cirqua system to get
> the water close to SCAA spec and run the pumps dialed back to about
> 8.2 bar as well. That's what they were running at the Toronto HostEx
> show as well on a brand spanking new La Spaziale Vivaldi S1.
> http://www.hostexshow.com/
>
> I was running 198 - 199F at the grouphead & a little more than 1 bar
> more pressure (1.3bar more). I wanted to err a little on the high than
> low pressure side.
>
> I PID'd my machine on June 24th, & the new Rancilio OPV on Sun Feb
> 25th, dam I WISH I had'a done., or had the money to do the pressure
> mod then!
> Cheers,
> Craig.
>

Five pics on my portafilter OPV for Silvia pressure gauge assembly
starting here:
http://www.coffeegeek.com/forums/espresso/machines/283864#283864
Craig.



    
Date: 27 Feb 2007 04:02:27
From: Steve
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?
On Mon, 26 Feb 2007 19:31:03 -0500, "Craig Andrews"
<alt.coffee@deletethis.rogers.com > wrote:

>I installed my Rancilio OPV on Sun Feb 25th & dialed it in to a
>stagnation pressure of 10.5 bars (154 - 157psi) & a dynamic pressure of
>9 - 9.5 bars (135 - 140psi).

Craig,
What did you use to set the pressure?


 
Date: 23 Feb 2007 19:43:13
From: Craig Andrews
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?

<chuck.ford@gmail.com > wrote in message
news:1172276570.161812.245430@t69g2000cwt.googlegroups.com...
> Does anyone know if it is possible to retrofit old (pre-2006) Rancilio
> Silvia with the new, adjustable OPV?
>
> I've seen the part available at:
> http://espressoparts2.zoovy.com/product/R_1406
>
> Is this part compatable with older Silvias? If so, is this something
> that somebody could reasonable do themselves? Is there a site similar
> to the pressure mod site below that show how to do this?
>
> http://mysite.wanadoo-members.co.uk/m4tt5mith/SilviaPressureMod.html
>

Hey Chuck, yes a direct replacement. I'm in the process of doin' that
right now!
Craig.



  
Date: 24 Feb 2007 01:48:24
From: Steve
Subject: Re: Retrofitting a 2003 Rancilio Silvia with the new adjustable OPV?
On Fri, 23 Feb 2007 19:43:13 -0500, "Craig Andrews"
<alt.coffee@deletethis.rogers.com > wrote:

>Hey Chuck, yes a direct replacement. I'm in the process of doin' that
>right now!

Can we get a report when you're through with the installation and
tests?