Burgtec Shimano Direct Mount Oval Thick Thin Chainring Iron Bro Orange 30T - Iron Bro Orange

Does a mechanical advantage of increased gearing sound Interesting? If so read on. Through research and testing of many different prototypes with varying amounts of Ovality we found 115% from the top centre to be the optimum. This shrank the dead spot suitably and gave the same flawless chain retention as our round rings. The shortening of the dead spot on the top and bottom of the power curve allows you to get back into the power phase of your crank rotation sooner. The benefit of this is twofold; increased gearing on the downward stroke and faster crank speed to get the crank propelled back around into the power phase continually. This is a significant gain because virtually all studies into pedalling performance suggest that a minimum 80% of your power comes from the downward motion. Ma...

Burgtec

Price: £49.49 from Cyclestore

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