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Date: 16 Dec 2006 15:36:50
From:
Subject: Silvia - pressure high??
6 weeks with Silvia. Shots range from just OK to "jeez that sucks"
Truths
Rocky
PID Silvia
LM ridgeless double
16gm

Fresh beans (tried BC, La Colombe (Phila) Nizza, two other local
roasters + my early attempts with FR8+ and Monkey)
45-60ml in 25 sec
Just completed making my naked PF. Starts with outer circle of drops,
moves to center, looks even; good color, tiger striping

New observation
put a pressure guage on the empty PF. about 11bar. From searching
here (alt.coffee), should be 9ish.

Questions
1. Would 11-12 bar make the shot bitter or generally suck
2. How does one adjust the adjustable OPV in Silvia
3. Am I nuts?

Going over to John Hornall's shop to remind me what a really good shot
tastes like.

Thanks
Stan





 
Date: 17 Dec 2006 02:13:44
From: I->Ian
Subject: Re: Silvia - pressure high??
This topic at H-B maybe interesting
http://www.home-barista.com/forums/viewtopic.php?t=2582

On 16 Dec 2006 15:36:50 -0800, stan.shire@gmail.com wrote:

>6 weeks with Silvia. Shots range from just OK to "jeez that sucks"
>Truths
> Rocky
> PID Silvia
> LM ridgeless double
> 16gm
>
> Fresh beans (tried BC, La Colombe (Phila) Nizza, two other local
>roasters + my early attempts with FR8+ and Monkey)
> 45-60ml in 25 sec
> Just completed making my naked PF. Starts with outer circle of drops,
>moves to center, looks even; good color, tiger striping
>
>New observation
> put a pressure guage on the empty PF. about 11bar. From searching
>here (alt.coffee), should be 9ish.
>
>Questions
> 1. Would 11-12 bar make the shot bitter or generally suck
> 2. How does one adjust the adjustable OPV in Silvia
> 3. Am I nuts?
>
>Going over to John Hornall's shop to remind me what a really good shot
>tastes like.
>
>Thanks
>Stan

--
Posted via a free Usenet account from http://www.teranews.com



 
Date: 17 Dec 2006 02:00:51
From:
Subject: Re: Silvia - pressure high??
the pressure is regulated by the amount of coffee, the gring of coffee
and the tamp pressure applied. I wouldn't touch the machines pressure
settings but rather adjust the above and see what results you get.


medley wrote:
> There are two hex nuts on the OPV on the end towards the front of the
> machine. The outermost one is the one that adjusts the pressure.
> Turning to the left (counterclockwise) lowers the pressure. And turning
> to the right (clockwise) raises the pressure.



 
Date: 16 Dec 2006 21:14:51
From:
Subject: Re: Silvia - pressure high??

jggall01 wrote:
> Stan - You may find these images useful:
>
> http://www.PIDKits.com/opv.html
>
> Jim
>
> [Humble apologies if this posts twice - Google groups]

The pictures were really helpful. Now all =88 have to do is buy a larger
open end wrench (my metrics go up to 19mm) that is thin enough to fit
the jam nut and not hit the adjustment nut. My adjustables are too wide
to do the jam nut only. Tried channel locks but the jam nut is really
on there. If this were my car I'd soak the threads overnight in WD40
but I'm afraid I'd be tasting it for months.

I'll report on progress. Any other jam-nut-removal tips would be
welcomed.
Stan



 
Date: 16 Dec 2006 21:01:44
From: jggall01
Subject: Re: Silvia - pressure high??
stan.shire@gmail.com wrote:

Stan -

A few images that might be of use to you:

http://www.PIDKits.com/opv.html

Jim



 
Date: 16 Dec 2006 20:51:58
From: jggall01
Subject: Re: Silvia - pressure high??

Stan - You may find these images useful:

http://www.PIDKits.com/opv.html

Jim

[Humble apologies if this posts twice - Google groups]



 
Date: 16 Dec 2006 20:13:49
From:
Subject: Re: Silvia - pressure high??

medley wrote:
> There are two hex nuts on the OPV on the end towards the front of the
> machine. The outermost one is the one that adjusts the pressure.
> Turning to the left (counterclockwise) lowers the pressure. And turning
> to the right (clockwise) raises the pressure.
Thanks. I'm off to adjust the OPV. I'll report back.
Stan



 
Date: 16 Dec 2006 19:13:19
From: medley
Subject: Re: Silvia - pressure high??
There are two hex nuts on the OPV on the end towards the front of the
machine. The outermost one is the one that adjusts the pressure.
Turning to the left (counterclockwise) lowers the pressure. And turning
to the right (clockwise) raises the pressure.