Going fixed wheel on my Geoff Roberts - help please!

also I need a taller quill...that **Technomic Deluxe

showing my ignorance but '** making it ideally suited for raising the bars on any frame with a threaded fork'...how do I find out if I've got a threaded fork?

You have a threaded fork, most older bikes do.

You can tell this because the stem slides into the fork without anything visibly securing it. Unlike a more modern clamp on stem.

In the same way tubular tyres are known as 'sew-ups' many a old school mechanic will refer to a threaded fork as a 'sew-on'

Basically inside the headtube of your frame there is a weave of carefully knitted threads securing the headset, fork & stem together.