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Topic: adjusting Rancilio Thermostat? (11 msgs / 211 lines)
1) From: Edward Spiegel
Does anyone know anything about adjusting the thermostat on a Rancilio Betsy (Miss Rancilio)? I don't know if the adjustment is hard-wired or just hidden somewhere in the guts where one could adjust it.
It seems to me like the brewing temp has gotten a bit cooler over the past years. When I measure the temp of the water in a glass put under the brewhead it reads 180. I don't know how quickly the water cools off as it passes through the portafilter. But that seems cooler than I would expect if the water was supposed to be 195 F or so at the brewhead.
Thoughts?

2) From: Lesley Albjerg
I have a Miss Nancy.  What improved my tempature was going to a commercial portafilter.   The mass of this portafilter makes a huge difference.   The  Faema E61 from Northwest Espresso Parts works.  You can also use LM baskets which helps improve the shots as well.
 
Les
Edward Spiegel  wrote:
Does anyone know anything about adjusting the thermostat on a Rancilio Betsy (Miss Rancilio)? I don't know if the adjustment is hard-wired or just hidden somewhere in the guts where one could adjust it.
It seems to me like the brewing temp has gotten a bit cooler over the past years. When I measure the temp of the water in a glass put under the brewhead it reads 180. I don't know how quickly the water cools off as it passes through the portafilter. But that seems cooler than I would expect if the water was supposed to be 195 F or so at the brewhead.
Thoughts?

3) From: David Lewis
At 12:26 PM -0700 7/24/04, Edward Spiegel wrote:
<Snip>
I haven't looked inside a Betsy, but almost all machines in that 
class use a bi-metallic snap-action thermostat which is fixed at 
manufacture. They do get old, and are usually a few dollars. Try Will 
at . They're available in several 
different temperature settings, and you might find a hotter one more 
to your liking, especially if you're roasting more lightly than you 
used to.
Best,
	David
-- 
"The greatest dangers to liberty lurk in insidious encroachment by 
men of zeal, well-meaning but without understanding."
Justice Louis Brandeis

4) From: Edward Spiegel
At 10:42 PM -0700 7/24/04, David Lewis wrote:
<Snip>
Thx

5) From: Edward Spiegel
At 3:05 PM -0700 7/24/04, Lesley Albjerg wrote:
<Snip>
Thx Les. What are LM baskets? I have a horrible feeling that the Betsy uses a non-standard portafilter. I vaguely remember it as being 54 mm rather than the more standard 58 mm.
I've searched on the web to see if there is info about replacement portafilters. Any Betsy owners on the list?
--Edward

6) From: Lesley Albjerg
LM stands for La Marzocco  on of the better brands.  They make one of the best baskets around.  Well thought out for preventing channeling.  High quality in manufacture!  I don't know anything about the Betsy.  I just know the Audrey replaced the Nancy and there really isn't any difference except the name.  54mm would be a very odd size for a basket size.  What do you use for a tamper?  Thor would like to know!
 
Les
 
Edward Spiegel  wrote:
At 3:05 PM -0700 7/24/04, Lesley Albjerg wrote:
<Snip>
Thx Les. What are LM baskets? I have a horrible feeling that the Betsy uses a non-standard portafilter. I vaguely remember it as being 54 mm rather than the more standard 58 mm.
I've searched on the web to see if there is info about replacement portafilters. Any Betsy owners on the list?
--Edward

7) From: Mark Tosiello
Les,
Would it be a significant upgrade to replace the 58mm basket in my Tea with
an LM basket?  Just wondering how I can Jazz things up....as always.....
Mark "DB/HG Rules" Tos
-------
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Anti-Virus.

8) From: Edward Spiegel
At 6:30 AM -0700 7/25/04, Lesley Albjerg wrote:
<Snip>
The Betsy was (IMO) a terrific machine that they only made for a few years. It had the same internals (except for 3 way valve) as the sylvia but had a plastic chassis and -- apparently -- a different sized portafilter and grouphead.
I use the plastic tamper that came with it. It has a convex 'head' and measures about 52 mm across. I just measured the basket which seems to be 55 mm across inner diameter. (I read 54 mm somewhere online but that might be wrong). A couple of places that sell replacement parts on the web make note that the replacement baskets for the sylvia don't fit the betsy.
Anyone know of a good parts distributor/repair place in the SF Bay Area? Maybe they would be able to point me in the right direction.
Thx again to all,
Edward

9) From: Ben Treichel
Mark Tosiello wrote:
<Snip>
Not Les, and trying not to be more ;-)
My current Faema has a LM PF, and my rebuild project has the Faema PF. I 
really like the feel and design of the LM.
Ben
<Snip>
-- 
Ben Treichel
Program Manager
S.E Michigan
SwRI
248-232-7365 (o)
248-935-6845 (m)

10) From: Greg Scace
I'm guessing that the temperature is set by snap action thermoswitch like 
on other Rancilio home machines.  Looks like a short plastic cylinder with 
two wire connections on opposite side of it, mounted to the boiler with a 
small strap across the thermoswitch and two screws.  Diameter of the 
thermoswitch is around 1/2 to 3/4 inch if I remember right.  They ain't 
adjustable but they are easily replaced and very inexpensive.
Your temperature measurement technique is most likely the culprit 
here.  The glass will absorb heat from the water and the thermometer will 
as well, resulting in an artificially low reading.   You could probably 
improve accuracy by pouring boiling water into an insulated styrofoam cup, 
and then dumping the water out just before pulling the blank shot into the 
styrofoam cup.  You should make the measurement with a thermometer that was 
removed from a pot of boiling water immediately prior to making the 
measurement.  The blank shot should flow over the thermometer, which should 
be  placed such that the sensing portion is near the bottom of the cup.  I 
suspect you'll get a very different answer if you do the measurement in 
this manner and the answer will be a lot closer to the truth.
-Greg
At 12:26 PM 7/24/2004 -0700, you wrote:
<Snip>

11) From: Edward Spiegel
At 11:20 AM -0400 7/26/04, Greg Scace wrote:
<Snip>
Thanks! I suspected that was a possibility. I'll try it out.
--Edward


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