On 06/04/2021 19:05, Chris Green wrote:

Is there any sensible way to tighten SWA gland earthing ring nuts?
Even on the smallest size (20mm hole) the gland nut is 24mm or 25mm
and I've never managed to find a spanner of that size that has any
chance of getting at the nut.

I guess a short stub of a box spanner with a tommy bar welded on might
do the job but I doubt if you can get a socket onto the nut, it's too
thin. I don't have any box spanners this big anyway.

Sounds like something in the style of a plug spanner for single-cylinder
Velocettes:

https://www.groveclassicmotorcycles....-Handle---14mm

The BSA plug spanner is similar. I'm sure the ones I had were shorter,
but we're talking sixty years ago...

--
Spike