Yesterday saw more progress on the motion for the J6, with the valves almost complete.
I still have the arms to make that connect the valve rockers with the expansion link etc. But I am pleased that I have got this far as I had hit a bit of a mental brick wall with concern that attempts at soldering on the valve rocker supports would result in them dissolving into individual parts again.
As happens often when procrastinating, I worried for nothing.
In my varied kit collection I have a few items of NER rolling stock from Medley Models/NER Days and it recently came to my attention via a fellow modeller that among other things the buffer heads in some of the kits need a little attention. I had a vague recollection of Steve Hoyle mentioning something about his supplier having supplied them as they are and has subsequently passed away so no chance of doing anything about them. These are what came with some of the kits (appologies for the slightly out of focus photos). You will note the interesting collar that would prevent any kind of compression…
I bought a couple of B1 opens from Mossy and they have been sat on my desk with the buffers beckoning to me each time I sat at my laptop. So this afternoon I decided to turn the collar off. In the end I did about 30 and it was quite a good exercise in repeatability on the lathe using the graduations on the lead screw handwheels although the minor variations in sizes proved that they weren’t done with a CNC machine. I also took the opportunity to file off any centre pips and rub over the heads with emery while I had them in the chuck.
Further progress on the tender has seen the basics of the body
So far, the only issues have been some bowing of the half-etched
sheets which has taken a bit of work to get them soldered up straight. The
worst being the rear sheets with the steps and the coal door.
In the end I added a second sheet of 10thou nickel to back
off the coal door.
While I am distracted with outside jobs during the good
weather, I have been working on another of the key outstanding jobs that is
simple to pick up and put down. The back head/plate, is as I mentioned earlier
in the build, a GNR Boiler Back Plate set from LG Miniatures. It wasn’t quite
deep enough so I added a strip of thick brass along the bottom. Also missing
from the set as delivered, were the injectors. Laurie includes a layout drawing
in the set and it showed the missing injectors. An enquiry to Laurie had an apology
and a pair of injectors in the post.
I am not sure if they were from the GNR set or another more
generic pair but a little bit of scratch building had them looking the part. I
had to fabricate one of the levers for the right hand injector from a .9mm rod
with one end squashed and drilled out for the pin and then tapered with a file
in the mini drill (too small to old securely in the lathe).
In the end I only used one of the hand wheels from the set
because they came with cast stems on them and I wanted to fit them to the stem
already present on the castings so I used some cast hand wheels from the spares
box which had holes in the centres. Had I not had them to hand I would have cut
the stems of the castings and drilled them for the ones with the cast stems but
it would have been a bit tedious.
The GA showed some kind of inline valve down the right hand
side of the cab at the side of the back plate so I knocked one up from a couple
of bits of tube and a cast handwheel from the set.
My apologies for the greenish tinge it’s reflections from
the green storage box that I propped it against for the photos.
With the brake hanger height sorted it was time to fit them.
Because the wheels are on telescopic axles, they need much more wiggle room to
be removable than the Slaters et al, types. It’s actually quite surprising how
little room you need to remove a Slaters wheel.
The lack of space around the brakes meant that for the
wheels to be removable the brakes need to be removable too. I did this by
adding a collar from microbore tube over the .9mm rods that the brakes hang from
on the frames. And at the moment the cross shaft at the front of the tender is
removable but I am sure that if this were fixed the brakes would pivot out of
the way to get the wheels out.
Just to prove that they are removable.
I also made the two quite hefty support rods for the water
Plus, a Blue Peter moment in that here’s one I did earlier.
I fitted the brake cylinder that I turned when I first got the Unimat 3.
A few general shots of the inner chassis, for no other reason than I got a bit carried away with the camera.