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ROK espresso machine?
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Discussions > Espresso > General > ROK espresso...  
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PJK
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PJK
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Posted Thu May 23, 2013, 10:03am
Subject: ROK espresso machine?
 

I saw an ROK hand espresso machine advertised on this site for about $200.  It looks very much like something called a Presso which was sold by All Clad or something like that in the US. I bought one and did actually pull a decent shot with it. Some of the discussion on these forms was about it coming apart and scalding the user.  Mine has been squirreled away for years.

Has ROK addressed the issues or is this thing still a hazard?

Phil

 
Philip J. Keleshian
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dana_leighton
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Posted Thu May 23, 2013, 10:41am
Subject: Re: ROK espresso machine?
 

The ROK website claims to have improved the quality and strength of the materials to prevent the handle breaking, etc. I think a more fundamental problem was the one discovered (and fixed) by Jim Schulman, as documented in this post on H-B. The piston has an air space at the bottom that causes problems for the extraction. He fixed that by creating a plastic plug to fill the air space. I haven't seen any evidence that this problem was resolved.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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PJK
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PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Thu May 23, 2013, 4:46pm
Subject: Re: ROK espresso machine?
 

Hi Dana,

I had a different work around (not as good) but I was going to do Jim's mod. Before I got to it a move came up and the thing is still packed away.  Maybe I should look for it and do the mod and play with it.

I'm wondering if the airspace was by design to limit the force one could apply to the machine.  

Phil

dana_leighton Said:

The ROK website claims to have improved the quality and strength of the materials to prevent the handle breaking, etc. I think a more fundamental problem was the one discovered (and fixed) by Jim Schulman, as documented in this post on H-B. The piston has an air space at the bottom that causes problems for the extraction. He fixed that by creating a plastic plug to fill the air space. I haven't seen any evidence that this problem was resolved.

Posted May 23, 2013 link


 
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