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Mmm, thanks for the input… The ring is pretty worthless anyhow as it is a very sloppy fit (hence the soldering bodge). But if the part is softened so much after soldering how would you explain that after last years season of about 2000-2500 miles of fast riding the bearing track itself still looks good with little noticable play?

I know I am not that good at knowledge on materials and hardening techniques, I simply tried to figure out a way of temporarily fixing the bigend to get me through the season. I expect to do about 1000 miles in May. I could have it fixed after that. I don’t think having the rings replaced before May 15th is an option.

Could I compare and check the hardness of both rings with a file or something?

I am glad my flywheel is ok…