Self-aligning rear main

[Charles P]

Are we talking about a normal deep-groove ball race or a self aligning bearing?
As Tony Press observes the self aligning bearing has little thrust ability, so I'd expect a normal AC pair at the front with a bearing lip.
A deep groove ball race, fitted with a spacer to the flywheel (as Zeto said) could live without a lip.
A self aligning rear with no front restraint via AC bearing/lip is not a combination I'd try


Charles