David
Thanks for that – I have made the bogie, and on my plans the guard iron (on sheet 5) are 3/32″, and that seems OK.
My father used to live in Chesterfield, and many years ago on a visit to his parents (I am ashamed to say about 30) he went to Norman’s house and bought my plans (I think they cost £25!!!).
As I was a poor teacher (pause for violins please) the plans sat in the cupboard for years, and now I have retired I have started in earnest. Hope to finish before I pop my clogs!!!!
I agree with your comment about a coupler – that would make sense. I spoke to a chap at Ally Pally exhibition who had a 5″ Brit on display – and he has simply drilled down through the piston – bored a seat – placed a ball bearning in the seat and then installed a small rod across the top. He said that as the top of the cylinder filled with water, the ball “floated” and the water drained out.
Please get in touch if you think I can be of any help – I have just started the cylinders – Oh how I HATE cast iron.
Bill