Originally Posted by
02Giant
I purchased a press and the bearings from Wheels Manufacturing for my BB30 replacement. I went with the Enduro angular contact bearing based on Wheels claim they are more durable. I figure I am my biggest detriment to speed on the bike.
I was wondering about the angular contact options. I am not sure they add anything because a crank is all radial load. Also, I am am not confident the preload collar on my Sram cranks would provide sufficient preload for AC bearings.
I am also wondering about seal choices. Non content seals seem to reduce drag but do those marginal gains come at a durability cost because grit and water are more likely to get into the bearings?