{"product_id":"burgtec-shimano-direct-mount-oval-thick-thin-chainring","title":"Burgtec Shimano Direct Mount Oval Thick Thin Chainring","description":"\u003cp\u003eDoes a mechanical advantage of increased gearing sound Interesting? If so, read on.\u003c\/p\u003e\n\n\u003cp\u003eThrough research and testing of many different prototypes with varying amounts of Ovality we found 115% (from the top centre) to be the optimum.\u003c\/p\u003e\n\n\u003cp\u003eThis 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.\u003c\/p\u003e\n\n\u003cp\u003eWe would recommend sticking to the current sized round ring that you are currently using when selecting your Oval size.\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eThick Thin Tooth Profile\u003c\/li\u003e\n\t\u003cli\u003e10, 11 and 12 Speed Compatible\u003c\/li\u003e\n\t\u003cli\u003e115 Degrees of Ovality\u003c\/li\u003e\n\t\u003cli\u003eFully CNC Machined from 7075 Aluminium\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe 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. Mainly because much larger muscle groups are used for this motion. The physics sorcery adds extra power in the downwards stroke for no extra effort by reducing the dead spot and adds a bigger gear for the now larger power phase in the downward stroke. Win, win.\u003c\/p\u003e\n\n\u003cp\u003eAll of our Chain Rings are + \/ - 2 Teeth so;\u003c\/p\u003e\n\n\u003cp\u003e30T Has a combination of 32T Increased Power Phase and 28T Dead Spot\u003c\/p\u003e\n\n\u003cp\u003e32T Has a combination of 34T  Increased Power Phase and 30T Dead Spot\u003c\/p\u003e\n\n\u003cp\u003eWe would recommend sticking to the current sized round ring that you are currently using when selecting your Oval size.\u003c\/p\u003e\n","brand":"Burgtec","offers":[{"title":"Burgtec Oval Shimano Direct Mount\nThick Thin Chainring ├é┬¡\nBurgtec Black ├é┬¡ 30T","offer_id":43951702147208,"sku":"BT-8741","price":129.99,"currency_code":"NZD","in_stock":true},{"title":"Burgtec Oval Shimano Direct Mount\nThick Thin Chainring ├é┬¡\nBurgtec Black ├é┬¡ 32T","offer_id":43951702179976,"sku":"BT-8742","price":129.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0363\/2958\/6824\/files\/cfe57f49f8a80acb4dfc9fba9aa63c2b.png?v=1755683121","url":"https:\/\/www.thebikestation.co.nz\/products\/burgtec-shimano-direct-mount-oval-thick-thin-chainring","provider":"The Bike Station Nelson","version":"1.0","type":"link"}