Osymetric SS-56 Osymetric Chainring Shimano/SRAM 130mm BCD Black, 130x56Review
Osymetric SS-56 Osymetric Chainring Shimano/SRAM 130mm BCD Black, 130x56
- Material: [ring] 7075 Aluminum
Number of Rings: 1
Teeth: 56 T, 54 T, 52 T, 44 T, 42 T
Bolt Circle Diameter: 130 mm
Connection: 5-bolt
Compatible Components: Shimano, SRAM
Weight:
Recommended Use: road racing
Manufacturer Warranty: limited
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Osymetric SS-56 Osymetric Chainring Shimano/SRAM 130mm BCD Black, 130x56
If you watched so much as one stage of one Grand Tour this year, you saw some of the riders occupying the top spots riding the Osymetric Chainrings. But, if you're like most people, you were scratching your head every time the camera panned to the drivetrains. Not quite an oval, and certainly not an ellipse, the Osymetric Chainring is its own shape -- and we're happy for that. The Oysmetric delivers greater efficiency, increased power, and requires less user effort. Now, before we get into explaining the Osymetric, we want you to abandon any preconceptions or memory comparisons of failed experiments like Biopace. This isn't to say that those engineers were wrong to pursue these designs, they simply never perfected the technology. We think that this is due to a fear of breaking free from the parameters and presets of what cycling componentry is supposed to look like. However, Osyemtric has realized that the best look for a bike is crossing over the finish line in first place. That's why Osymetric isn't afraid to appear obtuse in its aesthetic. The concept behind Osymetric is relatively easy to grasp. On a standard chainring, power isn't applied equally throughout a revolution of the crankarm. For simplicity's sake, let's divide a revolution into four quadrants. We'll call twelve and six o'clock Top Dead Center (TDC) and Bottom Dead Center (BDC), respectively. The horizontal position of three o'clock can be called just that. It is within the angle between the horizontal position and BDC, that power is most predominately exerted. However, the acute radii between the horizontal position and TDC and BDC are relative dead spots for power. Osymetric's shape directly reflects this data. It works on the objective of minimizing the time spent in dead spots, while maximizing the time spent within the radii of efficient power exertion -- horizontal. Basically, this means that, as the operator, you can apply more force while spending less energy.
