Shimano Dyna-Sys
A brand new redesigned drivetrain and 10 speed cassette from Shimano…
by press release
Shimano introduces a wide range of 3 X 10 Mountain Bike components with Dyna-Sys drivetrain. Available already around July will be the new DEORE XT and SLX groups, as well as a Dyna-Sys non-series crankset FC-M552 in black and silver. These products are an addition to the 9-speed components; they can easily be recognized by the Dyna-Sys logo. Visually, the components are identical to the 9-speed versions. Technically, they offer the new state-of-the-art in component technology: Dyna-Sys.
Shimano has changed the standard set-up of the drivetrain to increase the efficiency and achieve a remarkable stability. The current standard set up is 44-32-22 teeth chain rings combined with 9-speed cassette sprockets. This will change to 42-32-24 teeth chain rings combined with 10-speed cassette sprockets.
The advantages of a closer ratio front drivetrain with wider range cassette sprockets:
1. Increased efficiency
Ø A wider range 10-speed HG cassette means riders can spend more time in the 32T middle chain ring. And when they do have to drop to the granny, it’s a smoother, faster shift thanks to the more useable 24T inner chain ring. Also the 42T big-ring is easier to ride and smoother to get into so riders will use it more.
Ø Traditionally, riders have had to get used to making two or three recovery shifts in the rear every time they drop into the 22T granny. With Dyna-Sys, it’s just one recovery shift and it’s needed less often.
Ø Dyna-Sys makes shifting to the granny a seamless transition, letting riders deliver consistent, efficient power while maintaining cadence.
2. Remarkable stability
Ø An all-new directional mountain bike specific 10-speed chain means smoother shifts, lighter weight and greater overall performance.
Ø Closer gear ratios mean smaller jumps in between gears, more efficient chain movement and less chance of dropping a chain in rough conditions.
Ø Tighter cable routing and shorter rear derailleur housing make the system less prone to contamination, trail chatter or suspension movement.
Tags: dyna-sys
