ODandy Senior Member Joined: 15 Feb 2014 Posts: 16 Location: Halifax, NS Expertise: Just starting
Posted Mon Feb 17, 2014, 1:56pm Subject: Re: Newbie: Grinder Help Plz :)
Just to update everyone, I ended up purchasing a Baratza Vario from a very nice and accommodating guy on this forum. My Gaggia Classic just came in the mail today, I'm still waiting for the Rancilio steam wand to get here and I'm still on the look out for a pressure gauge to use to do the OPV mod. Is there anything else you guys would deem essential for my setup?
canuckcoffeeguy Senior Member Joined: 22 Aug 2013 Posts: 275 Location: Burlington, Ontario, Canada Expertise: I love coffee
Espresso: Bezzera Magica, Mypressi... Grinder: K10PB, Vario, Hario Slim Vac Pot: I have a Dyson vacuum, but,... Drip: Aeropress, Bialetti Brikka,...
Posted Mon Feb 17, 2014, 2:10pm Subject: Re: Newbie: Grinder Help Plz :)
Do you have a decent tamper and a 0.1 gram scale to weigh your beans? A scale will help keep your dose consistent from shot to shot. This will help you immensely when dialing-in your beans. By keeping your variables the same each time you pull shots, you'll have an easier time reaching the promised land.
I, too, have a Vario as my starter grinder. It's a great first grinder and works well for single dosing. It might take a while to break in, so seasoning with some inexpensive beans can help.
Also, be sure to always keep the Vario's grinder motor running while you adjust the grind size. If you don't, you could cause big problems with the micro and macro adjustment sliders. CCG
The video gives part numbers. If you want to save a bit, the gauge does not have to be fluid filled, but the filled damps out oscillation. It is pretty easy to read midpoint of the oscillation, since many only use the gauge a time of two.
OEM pressure is about 12 bar, too high for some of the 160 lb gauges. You can use a gauge in the 150 - 160 lb or 10 bar if you lower the pressure first. If you chose to lower it first, turn the adjustment about 3/4 turn or 270 degrees CCW, then put the gauge on the pf. That should save the gauge as that adjustment will get you close to 9 bar. In essence you adjust it blind to lower the pressure and then readjust to gauge measurement. I mentioned adjustment without a gauge in the above post.
You can adjust it static, no valve on the gauge and just use a single fitting to couple the gauge to the PF. Stat pressure on Gaggia should be about 9.5 to 10 bar.
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