The rotor ever so silent

[Rubenonfire]

Originally Posted by Nick Hacko

7750 is unidirectional ball bearing rotor and it should wobble.

3135 auto rotor unit is bi-directional and rotor weight should not wobble.

But it is far away from being 'well engineered'.
It is actually quite opposite - pathetically under-engineered.

The Daytona 4135 is fitted with well made, bi-directional ball bearing rotor.

I agree and disagree with you on this one, Nick, but to some extent almost take exception. Not because of any Rolex loyalty, but more common sense than anything else.
Yes I agree that the 3135 is not the most innovative movement...that goes without saying, and I'm not singing the praises of its virtues or even defending it against other superior movements, but "pathetically under-engineered?" Do me a favor...
Nothing that runs for twenty years only with regular maintenance is either "pathetic" OR "under-engineered." Pathetically engineered are the bicycles from the 1800's with the one enormous wheel in the front and the little one in the back. Granted, it's not as advanced as some of the other movements you may find in say, a Patek or similar automatic watch, but give the movement its due credit. It's been put in literally hundreds of thousands of watches that run with better than acceptable accuracy and performance. Sure, a lot of Rolex owners might want an a better-engineered movement, but c'mon, the movement flat out works. Cut it some slack.