Cylinder boring without a cylinder borer.

[tonyfoale]

I've been thinking of boring in the lathe for a while but using a bar between centers

Between centres is fine, the only problem is making an easily and accurately adjustable tool. It the lathe is solid enough then the way I did it allows the use of a store bought boring head with fine adjustment. Both ways work OK.

BTW Tony,I've read a lot of your motorcycle stuff over the years, were you involved with the Suzuki 'NUDA' concept bike? It has similar steering set up to the GSX you built (pictures at Cadwell Park)

Maybe you are thinking of the Rusty Falcon which predated the Nuda. The Nuda had conventionally orientated handlebars whereas the Falcon had roughly vertical bars as did the QL and Q2 series of bikes that I built, the first versions predated both of Suzuki's concept bikes. I had nothing to do with of those. Both the Suzukis had FFEs (Funny Front Ends) as did those of mine which you mentioned. However, the mechanisms were quite different to mine.
For those unfamiliar with these concept bikes here are a picture of each



Here are more. showing a test bike converted to my FFE and upright handlebars from around 1980.