kahvedelisi wrote:"correct diameter" according to who? Obviously italians prefer smaller sizes when it comes to tampers.
So what?
BY FAR, the greatest sales Rancilio enjoys for Silvia is in the US. It would then make sense for them to include a tamper for the US market that is in tune with what that market seems to prefer.. a tamper that is a correct match for the portafilter basket in which it will be used, even if it is based on their "wrong" opinion! Why don't you call 5 manufacturers of tampers. Tell them you have a stock Rancilio Silvia with the included portafilters and baskets that came with the machine. Tell them that you don't know the real size. Ask them what size you should order.
Have you even looked at the stupid plastic thing Rancilio calls a tamper that is included with Silvia? Have you measured it? Have you used it? It is so undersized that it is not even close. 57mm would be a preferred size since the Italians cannot seem to make portafilter baskets within reasonable tolerance ranges. The baskets vary quite a bit- enough that a 58mm tamper would not fit in quite a good percentage of them.
Now, the Silvia tamper is not only WAY undersized but the bottom is convex. it will tamp the center of the coffee and then push the coffee out and up the sides of the basket becasue of the large amount of clearance between the tamper and the sides of the basket. Outside of using a square tamper, the Rancilio inclusion is perfect if you enjoy channeling.
Beyond that, I believe that Ferraris still come with tires that are of the proper
DIAMETER for the rims on which they fit. Too bad Rancilio cannot pick up on that.
I find your arguments fairly weak. Let me ask you, then- If my basket has an inside diameter of 58mm, what would be the smallest diameter tamper that would give a proper tamp (without having to tamp in circles over and over to get an even compression throughout the basket? Please base your answers with the fact in mind that this forum is a "guide to exceptional espresso." [look up there ^ ]. I would love to hear the results of your testing. Maybe Reg can chime in here was well. He knows something about tampers from what I hear.
I would think that someone like you who owns an espresso machine that sells in the US for close to $2000USD would have a better idea as to the relationship that tamping has on distribution and quality extraction. Maybe your Rancilio Epoca ST1 came with the pod adaptor and this is all moot for you?
