Although progress has been slow since my last post, I haven’t been entirely idle.
First, I fitted the brake cylinder that Adrian made for me some time ago for which I am very grateful.

Then for some reason which I can’t recall I was looking at the GA of the pony truck in the Wild Swan book and realised that detailed as the MOK Pony Truck is it’s missing the side control spring.

I scanned the GA, imported it into Fusion and having scaled it, I then drew up the spring and it’s mounting.

From there it was easy to create a dimensioned drawing to allow me to attempt to make one.

I debated whether to make it in one piece and then wind wire around it to represent the spring or to make it in two pieces and thread the centre section 4ba (3.6mm) which is the nearest sized die that I have to the 3.5mm that I had worked out from the drawing. I decided to have a go at making the one-piece version first. If that didn’t look good enough, I would have another go.

There was a slight discrepancy between the GA and the actual width of my pony truck so I ended up turning a couple of thin spacers to fill the gap but it worked out okay in the end.

As you can see, it actually sits largely out of sight (when viewed from the front) but I enjoyed making it, and I know it’s there.