Featherbed swing arm-needle bearing mod
This needle bearing swing arm setup is in my 1966  Dunstall atlas replica racebike..
It took a  good part of an 8 hour day in front of the lathe for me to make this kit?
Off the shelf needle bearings and hardened races.  Two hardened steel races on the drive side and 1 on the right side.
It should be oil tight with the o-ring sealing against the end of the roller cages, and it IS extremely rigid with no play, but very easy and supple in it's travel axis.
I still need to add a zerk fitting to the swing arm for lube.
Very sweet rear suspension.