What does SRAM preload adjuster do?

What’s a Crankset Preload Adjuster? Essentially, a crank preload adjuster takes up any slack between your crank arms and your bike frame to ensure your bottom bracket doesn’t creak or wear out prematurely. It sits just inside your left crank.

What is crankset preload?

Crank preload is there to ensure that cranks are not over tightened so that they cause premature failure of the bearings. It allows the cranks to be “finger tightened” prior to the pinch bolts been done up to the right torque. It’s a way of ensuring the spacing is correct on the crank axle.

What is a preload ring?

“Thru-spindle” bottom bracket bearing systems pass a spindle through both left and right bearings. One design to eliminate movement is a preload ring built into the left crank arm that allows a precise setting of bearing preload.

What does SRAM dub stand for?

Durable Unified Bottom Bracket
Add To Cart From CSV In 2018, SRAM introduced mountain bike cranksets which use a new technology name DUB™ (Durable Unified Bottom Bracket). Meant to simplify frame BB and crankset compatibility across their product lines, it brought about yet another standard to understand.

Are SRAM cranks reverse threaded?

Keep in mind the threads are reverse threaded on the drive side.

Does SRAM dub bottom bracket come with spacers?

The new Sram DUB threaded bottom bracket requires a 12 point bottom bracket tool. The Sram DUB bottom brackets use spacers to align the spindle and the chain line on both the inside and the outside of the bottom bracket shell.

How much preload is too much?

A good indication that you’re relying on preload too much is if the bike has no sag at all under its own weight (with you NOT on the bike). Ideally, the bike will sag a small amount without you on it (5% or so) and then reach the desired 25-30% sag with you on the bike in normal riding position.

What does preload do on a coil shock?

The more preload force there is, the more force you have to exert on the shock to get it to move. So basically, more preload means less sag. When setting preload on a coil shock, you always want to keep a minimal level of preload on the coil to keep the coil from rattling around when the shock is uncompressed.