Paul_Pratt wrote:I am curious on people's thoughts regarding the new lever group used by many manuf. Although it is not, it is called in forums "the Bosco group". Now this probably applies to people who have used other older spring lever machines and even the group preceding the group in question, you know the one with the black plastic cover.
I recently bought some from the manuf. and just wondering what other people make of it. I'm not at all impressed to be honest.
What don't you like about it? It certainly works well & produces very nice shots on my Sorrento. It's just an upgrade of the old Rossi group. Here's what Kees had to say about it when we were discussing his Idrocompresso lever:
"We, Bosco, etc. use groups made by a company that specializes as a supplier to espresso machine manufacturers. This company also produces the E61 type steam valves, E61 groups and a host of other items.
They also first started by copying the Rossi lever group (black plastic cap on top), but differently than Astoria. This had a way too weak tiny central bearing. This wore real quickly. This weak point already existed in the Rossi (and Astoria too), but not as bad.
Since 2009 this company upgraded the turning mechanism to a copy of the San Marco system (fully chromed upper part). Now the centre bearing is a wide needle bearing, which is far better."
Both Bosco & Kees added a reservoir to hold shot water below boiler temp. As far as it being called the "Bosco group" the reason is that no one wants to commit the name of the company that builds the groups/E61 clones/ect to print. Seems to be top secret.
Share the company name & we'll have the correct name for the group.