Re: Probleem met hoeveelheid koffie
Geplaatst: do 24 nov 2011, 20:51
Oasn:
Dit is wat Jim Schulman van HB er over schrijft.\:
More on the flex when pulling the Strega's lever. Bottom line, I do not think it is a problem:
I have the case off, prepping for a video of the internals, and found the source of the flex.
The machine's frame, lever group mount, and boiler mounts are made from rigid steel "L" shaped pieces welded together; you'd need a sledge hammer to deform them. There is no flex at all in these.
But the case flexes easily and is simply suspended from the frame by hooks hanging on the shafts of six screws. Moreover, the legs have rubber cushions at the base, where they stand on the work surface, and at the top, where they meet the frame.
When you pull down the lever, the force is transmitted through the entire frame and presses down on the front legs, whose rubber mounts compress. This deformation in turn slightly flexes the case. In effect, you are seeing the entire machine shift relative to the surface it stands on, and its case. This is an odd effect, but can have no mechanical ill effect, since none of the actual working parts are bending, flexing, or shifting relative to each other.
Toen ik de machine kreeg was dat het eerste wat me opviel.
gelijk gesloopt.
De rvs frontplaat hangt aan een behoorlijk stevig gecoat hoekframe.
dus geen vierkant of driehoek.
De stevigheid wordt geleverd door de topplaat die met 4 schroeven aan het dragend frame vastzit.
Verder hangt dit in rubber.Dus het is niet de frontplaat of de groep die doorbuigt maar veel zit in de rubbers.
No worries here.
Strega espresso roeleert.
Ik heb hem nu een half jaar.
1500 espresso's uit gedronken.

Dit is wat Jim Schulman van HB er over schrijft.\:
More on the flex when pulling the Strega's lever. Bottom line, I do not think it is a problem:
I have the case off, prepping for a video of the internals, and found the source of the flex.
The machine's frame, lever group mount, and boiler mounts are made from rigid steel "L" shaped pieces welded together; you'd need a sledge hammer to deform them. There is no flex at all in these.
But the case flexes easily and is simply suspended from the frame by hooks hanging on the shafts of six screws. Moreover, the legs have rubber cushions at the base, where they stand on the work surface, and at the top, where they meet the frame.
When you pull down the lever, the force is transmitted through the entire frame and presses down on the front legs, whose rubber mounts compress. This deformation in turn slightly flexes the case. In effect, you are seeing the entire machine shift relative to the surface it stands on, and its case. This is an odd effect, but can have no mechanical ill effect, since none of the actual working parts are bending, flexing, or shifting relative to each other.
Toen ik de machine kreeg was dat het eerste wat me opviel.
gelijk gesloopt.
De rvs frontplaat hangt aan een behoorlijk stevig gecoat hoekframe.
dus geen vierkant of driehoek.
De stevigheid wordt geleverd door de topplaat die met 4 schroeven aan het dragend frame vastzit.
Verder hangt dit in rubber.Dus het is niet de frontplaat of de groep die doorbuigt maar veel zit in de rubbers.
No worries here.
Strega espresso roeleert.
Ik heb hem nu een half jaar.
1500 espresso's uit gedronken.