Before I move on with what's happening right now, perhaps I should explain what else had to happen to the Grange to get it to where it is...
Having got to the stage where the chassis ran smoothly by pushing, it was a case of adding the remaining parts to the chassis...the steam chests, connecting rods, brakes and all the other things that make a completed and competent model. As I've said the coupling rods came from Brassmasters. This brand prides itself on giving scaled products for the modeler to use. This is a great move forward, or is it? Having built the coupling rods, it was clear that the bosses on these rods was going to cause a problem when it came to fitting the connecting rods. Why? Because the screws in the wheels (Gibson) were not long enough to accommodate the extra thickness of a scale boss. In order to get the connecting rods to fit and then be locked in place I had to file down the boss on the connecting rods - severely! It took a while and I don't mind admitting that there was a period where I thought this was never going to work, but work it did.
Was this the end of the problems? Well, I wouldn't be asking the question if the answer was 'yes'.
Once the connecting rods were in place the space behind the cross head and the connecting rod wasn't sufficient to allow the rod to pass. More filing...this time I had to file away a complete lamination on the con rods in order to get a half decent clearance. In my haste to get on with things I forgot to file down the remainder of the screws and this is what is causing the engine to stop in the video in my last posting.
I still have not found the time in order to do this.
What have I been up to since then, well I've had an 'ongoing' project on my desk for over a year. A GWR Mink D with DC2 brakes. The chassis came from The Brian Morgan range and the body from Parkside.
The design chosen left me a bit mystified (it's a sprung chassis, I say sprung, it's only sprung on 3 axles (?)), so going my own way I cut out these axles and replaced them with Bill Bedford sprung units RCH 1907 pattern. The instructions provided on the S4 website are very substantial, lots of words and not much in the way of diagrams - which is what I prefer.
It has to be said the etches in the kit are excellent. 10/10.
This is what I built from what I've been able to find by way of photos and trying to decipher the instructions. If you can see any mistake (And I suspect there are some), please let me know so this can be put right.
And this is the finished model...
Having finished this - Mrs G goes on her hols in a weeks time, so no prizes for guessing what happens then - I started another pannier, A 94xx.
This one has has pedigree...High Level.
Today I finished the triple laminated coupling rods.

This will go under neath this...
One of Bachmanns' best models - in my opinion - as is usual with Mr Higgs chassis, there's a lot to do.
Stay safe
Mike.