Rivendell Silver Crank Low-Low

This is Rivendell's own design.

The little Low/low 34/24 ratio is fantastic if you'll be doing hilly rides, and you can shift it with any double front derailer ever made, or even just with a stick presumably. The Wide/low 38/24 might be the most versatile, for a mix of flats, rolling terrain, and steep hills. The Wide/high 42/28 is excellent for road bikes and quicker-paced riding.

There are two common aluminum alloys used in cranks. The strongest and best is 7075 T6 aluminum. That's what the SILVER is made of.

The SILVER crank is cold-forged. It's more expensive, but imparts a grain to the metal in a way that casting and machining doesn't. But nobody really casts cranks anymore (they used to). And some really fine cranks are machined. But they're machined because forging costs too much for small operations.

It’s compatible with JIS taper bottom brackets, which are most of them, and the chainline is about 47 with a 110mm Shimano BB, and 50mm with a 113. The Q-Factor with a 107mm BB is 154mm.

On road bikes with straight (normal) chain stays, mount it on a 107-110mm square taper BB (JIS). If your bike has bowed-out chain stays like most mountain bikes, it might need a 113mm. 

The chainrings are compatible with 10 speed and lower.