It is a good video. I just did a similar mod in my Classic. I still have to get a pressure gauge to check, but the results in the cup seem ok. One thing I would add is to explain that you need a wrench to unscrew the top of the opv (you seem to have done this previously). Also, some people suggest that it is better to aim at 10 bar if you measure the static pressure, taking into account the slightly lower pressure with the added flow of coffee. You could also simulate this by adding a T joint with a valve on one of the sides.
dearest, sorry for the inconvenience but I have an important question...I purchased the 9 bar spring which will arrive shortly...but after replacing it, can I still use the pressurized filter supplied (the one with the rubber underneath) or do I have to use it exclusively one of the remaining 2 (i.e. single and double dose)??? and if it's possible what happens to the coffee if I do it? Thank you very much❤
I had to do half a turn more than shown here to get great espresso. I am not quite sure what pressure I'm at tho. These machines are so precious for this simple pressure adjustment, you can really play around with it.
Your porta filter was clearly leaking so therefore was also reducing pressure before your reading on the gauge therefore this is not an accurate reading of the OPV ?
I don't think you are supposed to use a basket. Mine leaked until I took the basket out and just turned the portafilter farther. I calibrated it to 10 bar of static pressure (no leakage). No idea how this compares in real-world use however.
@@royob1 thanks for the video. To me that looked like one full turn and one quarter as you seem to have gone past the position you started with by about a quarter. I am not technically minded at all, so it's highly possible there's something I am not understanding.
It is a good video. I just did a similar mod in my Classic. I still have to get a pressure gauge to check, but the results in the cup seem ok. One thing I would add is to explain that you need a wrench to unscrew the top of the opv (you seem to have done this previously). Also, some people suggest that it is better to aim at 10 bar if you measure the static pressure, taking into account the slightly lower pressure with the added flow of coffee. You could also simulate this by adding a T joint with a valve on one of the sides.
I thought this machine had the spring… I ordered one. Thanks for the information.
me too. I just ordered it yesterday and realized my machine doesn't need it. thank god for amazon prime returns
@@dirtywater5336we're paying a yearly subscription for that. And Amazon makes a ton of money . They should thanks us!
i couldnt get a good seal with a basket, so I adjusted without, didnt have any leaks. Any ideas if this messed something up?
dearest, sorry for the inconvenience but I have an important question...I purchased the 9 bar spring which will arrive shortly...but after replacing it, can I still use the pressurized filter supplied (the one with the rubber underneath) or do I have to use it exclusively one of the remaining 2 (i.e. single and double dose)??? and if it's possible what happens to the coffee if I do it? Thank you very much❤
Then is 360° plus 90°? One whole turn and a quarter? Others said is only 90°
I had to do half a turn more than shown here to get great espresso. I am not quite sure what pressure I'm at tho. These machines are so precious for this simple pressure adjustment, you can really play around with it.
thanks for this Roy, much appreciated
Is the OPV next to pump or boiler? ….I have a nother brand on my machine we’re the OPV is next to boiler. Maybe you have adjust the pump pressure?
It's an Ulka vibration pump and you adjust the pressure generated with the over pressure valve.
@@royob1 you did not really answer my question. But I guess you trying to say that there is a valve next to your pump.
@@hemmatv1582 I don't understand your question, please re-read it yourself and decide what you're asking me please.
Your porta filter was clearly leaking so therefore was also reducing pressure before your reading on the gauge therefore this is not an accurate reading of the OPV ?
Rick Aldous
Certainly not, you need a bypass system to get an accurate reading.
Eh, it's good enough...
I don't think you are supposed to use a basket. Mine leaked until I took the basket out and just turned the portafilter farther. I calibrated it to 10 bar of static pressure (no leakage). No idea how this compares in real-world use however.
Same thing happened here. I figured it out eventually that the basket was causing it.
Great , thanks a lot. Good job.
how many degrees u need to tutn for lowering 1 bar?
112 degrees approx (about one third of one full turn)
@@royob1 for what - for minus 4 bar or for just 1 bar?
@@marcobutz3950 Q. how many degrees u need to turn for lowering 1 bar?.
A. 112 degrees approx (about one third of one full turn)
@@royob1 briliant comment, lmao
@@royob1 thanks for the video. To me that looked like one full turn and one quarter as you seem to have gone past the position you started with by about a quarter. I am not technically minded at all, so it's highly possible there's something I am not understanding.
Where did u get the gauge piece?
at the gauge gettin place :D
According to the title you have REDUCED the max pressure from 13 to 9 bar, isn't it?
Yes. Factory pressure is around 170psi, and people aim for 130ish..