A3 Tender Coupler Pocket
I have constructed the tender coupler pocket for my Pennsy A3 switcher project. There is a write up in The Hobbyist Machine Shop HERE. There was a lot of work in re-making that little component. It was very good practice in fabricating small parts for silver brazing. Hop over and take a look.
I didn’t take a lot of pictures. Let me know what you like to see. I am not really trying to produce a how-to, but I do like to post some of the action.
What I have in my left hand is six pounds of brass engine parts. It doesn’t quite look like it yet but it will get there. I examined my brass stash for the A3 project and it wasn’t as complete as I thought it was. The stash is good but a few things had been “borrowed” and/or are otherwise missing, or I didn’t figure materials as close as I could.
Actually this is probably 300% more than I needed but with projects like this there are minimum amounts that can be ordered. That’s OK as it will all get used at some point in time. I often cut down stock on hand that is too large rather than make a special order for a tiny quantity. If I look close enough at certain stock I can see smaller parts hiding inside, that my tools help me cut out.
That’s the nice thing about metal milling machines and metal lathes. Excess material is not much of an issue. The hard part is when you have to put some back on…
Timing is Everything
I have been setting myself, meaning my workshop, up for the last decade or so, to have the tools I need for retirement. I have succeeded nicely. I just have to force myself to realize I have reached that goal.
I have retired so I have the time and need to start using my shop in its full extent. I am heavy into lost wax silver casting and CNC micro machining. That will continue. But there are other projects I have put off, “for when I have the time.” The Kozo Pennsy A3 live steam locomotive is the most “machine shop” intensive of those put-offs.
I have just posted the pictures below of the A3 work completed that was put on the back burner many years ago, just waiting for this time in my life. These are the tender trucks and the tender frame. The front steps are here too. The coupler box is made incorrectly (oops!) so that will be a re-do.
I have a drawer full of brass sheets, and plates, and bars. Enough to be close to all the material needed to finish the tender. So it hasn’t been for the lack of material this project has been on the shelf.
I am not going to get into all the details for my reasons. Let me just say that priorities in life can change and can change again. As before, when I started with a machine shop project of this size and complex details, it is not the finished product that is the primary goal. It is all the details and skills in the construction that provides the fulfillment. The locomotive will be grand when finished but it is the trip to get there where I intend to find my enjoyment.
Weird maybe, but that is… Continue reading
Hold on… What’s going on here? Oh my Goodness…
Something has snapped. I am actually thinking about dusting off the Penn A3 project. Wow! Is it a dream or am I retired? Oh yeah, I am retired now.
I have the Kozo Shay, Climax and Heisler live steam locomotive how-to project books on my shelf as well as the Pennsylvania A3 Switcher. Are they ALL possible now?
Ha! They are possible but probably not all probable. But I never say never.
I have decided to stop chasing the buck, even with my on-line e-store “Ramblin” Dan’s Store” (RDS). I want to spend my time making things in my shop. RDS will hang together for a while but I decided not to try and increase or even maintain the e-business. It has always been a very low profit and I ran it more for the experience of operating a business.
Any for profit “Business” I do will probably be with my silver work (Lost Wax Casting) as I really enjoy working with very hot liquid metal. Of course the skill can be used for making small brass locomotive castings.
I started the ¾” scale project because Kozo provides excellent guidance in his books and the size of the parts are reasonable. The drawback is where to go to run the locomotive. I think there are club tracks in the Houston, TX area, but nothing in the Dallas area that I know about.
That has made me consider Gauge1 which has many various scales involved with that track size. Generally, it is used with any scale between 1:13.7 (7/8N2 or M scale) to 1:32 (Number 1 Scale)
The 7/8N2 grabbed my attention because it is only slightly bigger than ¾ scale (6/8) but runs on a very common gauge track although this is 2-foot narrow gauge in prototype. Most… Continue reading
I present a few more action shots on the X3 mill. The DRO is wonderful for cranking in the proper cutting dimensions even after a careful layout. The layout marks confirm the location but the caliper like accuracy of the DRO makes sure the cut is exact.
These parts will be used to braze up the coupler pocket for the A3 tender. I am not showing all the work involved, just some of the unusual. The saw here is the same thickness as the brass plate. I am cutting two layers at the same time. That way opposite sides will be exactly the same. The pieces will be assembled like an egg crate.
The cuts are made on one side of the vice but unseen inserted on the other side of the vice is more brass material the same thickness. This is to keep the vice clamping equal so that it doesn’t “rack” when tightened.
I will be posting more pictures of how the coupler pocket is assembled and finished.