Iv a similar idea
but not for a while
I intend building a small free lance one first just to get some ideas to work and then build a true scale model of her as I did with Bat
I have some pics of her and some rough drawings but I dont have a scanner
I may have the museum drawings in the loft.
Did Mr Arnot not have some drawings for a vertical
I think she was is going to be about 40 inches just honestly cannot remember and will have to get into the loft to find them
The plant build will be on mem next year I hope. I keep muttering on about this engine build to George and really do need to get my backside into gear but those infernal Stirling engines keep saying build me