I needed to put the Burrell crosshead guide in context. As in bolt it to the cylinder block and check it against the engine overall.
After making the crosshead guide I was nervous that it looked a tad large against the cylinder.
“However, I will reserve judgement until this is put in context with the traction engine. Also, there may be some ways to remove ‘weight’ from the design and essentially make it look slimmer.”
Marking Bolt Locations
One of the first challenges was marking bolt positions so that this crosshead guide could be fixed to the cylinder.
A fundamental requirement of the bolt locations was they need to work around the steam ports. Also, I needed to ensure I still had room for the cylinder cover bolts.
Essentially this meant bolts had a wider spacing where they located near to the steam port face of the cylinder.
The 8mm carbide slot drill was positioned in the slot it had cut. This gave me a reference surface. Placing the guide on a surface plate and using a square I marked the flange of the guide either side of the 8mm slot drill.
Now I could mark the flange at the centre of the slot. I had a good reference to start.
The 10BA cheesehead brass bolts are not quite correct, but for now these 4 bolts will do.
Crosshead Guide In Context
When you stand back and put the Burrell crosshead guide into context, it actually looks about right.
The wall thickness could be reduced a bit. This might not be the easiest item to machine now, but worth a go.