Is it the banjo you mean?

(Perhaps a mod would change the title)

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From Chris’s album photos … it would appear not

MichaelG.

My answer is probably

but needs to be checked

My lathe boss is 1.75" outer diameter

Round bed Pre B, Btype and M are all different. Your best bet is to keep an eye out for a donor lathe .

This is how I ended up with 6 1/2 B types but in the end it is an economical way of stocking up on spares .

theres a healthy market for anything you don't need.

Chris, if you haven't seen this page, it's worth a look in detail, particularly the photo about 3/4 of the way down whose caption begins 'Instead of a single slot L-shaped…' & which shows a compound reduction train for fine feed, which is likley to take up as much 'banjo-room' as you are likely to need – it's common to put one's largest wheel on the leadscrew, leaving the next largest pair and the next smallest pair to be compounded into two sets to fill the gap between the spindle and that – as the 'top' pair will be on the 'main leg' of your banjo, the length and angle of the lower slot will constrained quite narrowly by the need to mesh these to the leadscrew gear..

It's a rather complicated thing to describe, I hope the pictures help explain it better.. I notice that the ends of the banjo are shown in the picture, you may be able to approximate the lengths and angle by experimenting with cardboard templates or by drawing them up..

Lathes.co.uk – Drummond B-Type Lathe..