The Problem Solvers Eccentric 46 is a bottom bracket designed for use with PressFit 30 frames. The E46 fits frames with 46mm ID bottom bracket shells and accepts 24mm spindle cranks. This allows for 16mm of fore-to-aft adjustment.
Fits frames with 46mm ID bottom bracket shells
Compatible with road or mountain (68/73mm) bottom bracket shells
Spacers included for Hollowtech II, MegaExo and X-Type cranks; GXP adaptor kit sold separately (CR0097)
Allows for 16mm of fore-to-aft adjustment
NOTE: due to the wide variety of manufacturers and their methods, we can't guarantee compatibility with all frames. Please check with the manufacturer. Problem Solvers won't take responsibility for your frame if it's damaged as a result of installing the E46
So, I have a Raleigh Tripper, which comes with an eccentric bottom bracket setup just like this one. The Raleigh equivalent, though, has no side-wall on one side of the cups. This means that if you over-tighten the bolts on the Raleigh equivalent (which I stupidly did), it deforms the aluminum and your bearings get out of alignment and it becomes impossible to ride. I bought this as a replacement, and I've gotta say, I don't think it's going to have the same issue. The cups have large edges that go all the way around the shell, and it fits great.
You may be wondering why it's $150 for two small parts that are so simple, just bearings and housings. I was too, until I took a look at the tooling marks on these. They are CNC milled, from a single block of aluminum, Macbook Pro style. The price is due to these being one-off carving jobs, rather than cast or molded or hydroformed.
It does exactly what it's supposed to, feels super durable, is lightweight and looks great. Would buy again, though hopefully I won't ever have to.
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