From memory LBSC produced 3 versions of his Hall design – Lickham Hall was an updated version of the original, Ivy Hall was the original and Lifford Hall was a version created for Reeves. (I am sitting about 1/4 mile from Lifford Hall as I type!)

Ivy Hall was described in Vol 113 of the ME and a quick look at the text says that LBSC wanted the crankpins made from silver steel – 1/4" for the leading and trailing so the coupling rod bushes need to be a running fit on that, eased to allow axlebox movement as necessary.

I suspect that will be a bit of a closer fit than clearance for a 1/4" screw or bolt – ream 1/4" perhaps?

Edited By Nick Clarke 3 on 22/02/2019 11:32:25

From memory the name Lickham Hall is a play on words. The engine is based on a GWR Class named after the homes of minor British aristocracy and I believe it was a popular prototype for modellers.

Rather than model an actual engine, in his usual style LBSC went for performance rather than scale accuracy and, to annoy the rivet counters, called his engine the "Lick 'em all".

Now I typed this in, I'm worried I dreamt the story and it's complete nonsense!

Dave