Re: Oscar rebuild and modification
Nice solution, too.
Yes, same experience here, just a small flush and you get 94-95°C shots. A little more and you can drop the temp to 92-93, then 90-91 etc.
This second Oscar Ive restored I let the OPV (opening around 10 bar) right there where the neplax valve is (in fact, this is the old neplax valve Simonelli used). So a little bit of hot water is tossed out, but Ive measured the group using a Scace and seems to be stable. Maybe this can help specially very slow ristrettos shots, where the HX tends to overheat with a slower flow (OPV before HX or no OPV).
I have to make some videos before I sell it...
Márcio.
Nice solution, too.
Yes, same experience here, just a small flush and you get 94-95°C shots. A little more and you can drop the temp to 92-93, then 90-91 etc.
This second Oscar Ive restored I let the OPV (opening around 10 bar) right there where the neplax valve is (in fact, this is the old neplax valve Simonelli used). So a little bit of hot water is tossed out, but Ive measured the group using a Scace and seems to be stable. Maybe this can help specially very slow ristrettos shots, where the HX tends to overheat with a slower flow (OPV before HX or no OPV).
I have to make some videos before I sell it...
Márcio.




Dont have an ASR-33 teletype to read it on, or a PDP-11 to run it on though! Dennis was a really nice guy and we all owe a huge debt to him and Ken..
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