{"product_id":"tool-gear-calculator-affinity-track-gear-rotating-chart","title":"TOOL GEAR CALCULATOR AFFINITY TRACK GEAR ROTATING CHART","description":"\u003cp\u003eRotating chart for making track related gear calculations simple\u003cbr\u003e\nSpin the perfect gear ratio, on the track or in the streets - reliable, accurate gear calculations for (700c wheel) track bikes\u003cbr\u003e\nAffinity did the math and created a simple, easy to use chart which generates 100% accurate calculations unlike inaccurate online calculators\u003cbr\u003e\nRotate the chart to choose your chain ring size, the window then displays the results of your chain ring \u0026amp; cog gear ratio based on 3 different tire sizes\u003cbr\u003e\n19 chain ring variants (47-65t) and 6 cogs (12-17t) for a total of 342 total calculations\u003c\/p\u003e","brand":"AFFINITY","offers":[{"title":"Default Title","offer_id":47948909215958,"sku":"10-610816","price":20.87,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/2932\/6294\/files\/610816.jpg?v=1773688050","url":"https:\/\/carsoncitybikeshop.com\/products\/tool-gear-calculator-affinity-track-gear-rotating-chart","provider":"Carson City Bike Shop","version":"1.0","type":"link"}