Posted Fri Jan 11, 2013, 4:18pm Subject: Re: V3 Silvia wand on Gaggia Classic?
Here's a picture of the the safest way to hold the adapter for boring. It is definitely not necessary but highly recommended. Although the more mechanically inclined members will have no problems with this, I wouldn't want anyone getting hurt boring out this part... and I take no responsibility for any injuries that may occur.
For those in the know, or want to know, this lathe is nothing special. It is a standard Jet 9x20 manual lathe.
OK, I brought my small-pin gauge set home and measured the ID of the smaller diameter pipe. I went up to a 0.195" gauge, went up about an inch and seized. It feels like another 0.002" or so, but I don't want to risk scratching up the inside. With thread standards so loose, roughtly +0.002" is well within tolerance of a 0.195" hole.
If this works out for you, this would translate to either a 1/4-20 or M6-1.0 thread. Either way, the hole is 0.195".
D4F Senior Member Joined: 15 Mar 2012 Posts: 1,191 Location: USA Expertise: I like coffee
Espresso: Gaggia Classic PID Grinder: Preciso
Posted Sat Jan 12, 2013, 10:22am Subject: Re: V3 Silvia wand on Gaggia Classic?
So, if I understand correctly, the hole size is as large as the thread OD, so no go with the V2 tip. I would have to look for larger tip thread from something else. What is the small part of the tube OD. Thanks.
Posted Sat Jan 12, 2013, 11:13am Subject: Re: V3 Silvia wand on Gaggia Classic?
If you really have your heart set on it, there's an option for you. It would require 1 extra step and a 2-tool investments... plus parts.
You could get a SPI tap for, say for a M4-0.7 or M5-0.8 Helicoil. This would cut into the appropriate threads into the V3 pipe. Then you install your Helicoil. Now you've essenntially reduced the diameter to accept a smaller thread.
So you would need - SPI tap for M4 or M5. You'd have determine which is appropriate. - Helicoil install tool. You might be able to do it with a small enough tweezers but it'll be diffcult to break the tab when you're done - M4 or M5 Helicoil. You should be able to get these from McMaster or Olander.
I'm just going to assume everything is metric on all these machines. I think it's a pretty safe call.
D4F Senior Member Joined: 15 Mar 2012 Posts: 1,191 Location: USA Expertise: I like coffee
Espresso: Gaggia Classic PID Grinder: Preciso
Posted Sat Jan 12, 2013, 11:51am Subject: Re: V3 Silvia wand on Gaggia Classic?
Or chuck a piece of brass in the lathe, bore a center hole and nozzle hole, mine is about 0.053", and then chose the neck and thread size and tap the wand tube to fit the tip just made. Not as simple as I would like. I prefer nice solutions that most of could duplicate with home tools and if purchases are necessary, then for common or multi use items.
One of the reasons that I liked the PID controller mod was that most of us are capable.
Posted Tue May 7, 2013, 7:23pm Subject: Re: V3 Silvia wand on Gaggia Classic?
Here is the latest V3 steam wand for my Classic.
I've done away with the entire Gaggia steam valve assembly and replaced it with standard sized fittings. The V3 steam valve is now tucked under about an inch to give more ground clearance, and more of that "factory" look.
The steam valve (the valve itself) was replaced with a 90 degree ball valve. It turns 1/4 turn, much like a commercial steam levers. I'll be changing the lever out for something that looks nice; probably machine something out of stainless steel, weld on a handle and polish it up.
Posted Tue May 7, 2013, 7:26pm Subject: Re: V3 Silvia wand on Gaggia Classic?
It's so massive that the plumbing needs to be fully assembled and bolted to the boiler and set in place, all at once. This will make things difficult for me to get into the "brain".
There is a little rust on top of the new black oxide bolt, but it's on the outside of the boiler. I didn't have stainless steel M6x10 bolts on hand so I cut what I had. I'll replace those with stainless steel bolts at a later time.
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