AFFINITY TOOL GEAR CALCULATOR AFFINITY TRACK GEAR ROTATING CHART GC1
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AFFINITY TOOL GEAR CALCULATOR AFFINITY TRACK GEAR ROTATING CHART GC1

AFFINITY
SKU:
10-610816
$17.03 $15.18
$23.18
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Description
Rotating chart for making track related gear calculations simple Rotating chart for making track related gear calculations simple Spin the perfect gear ratio, on the track or in the streets - reliable, accurate gear calculations for (700c wheel) track bikes Affinity did the math and created a simple, easy to use chart which generates 100% accurate calculations unlike inaccurate online calculators Rotate the chart to choose your chain ring size, the window then displays the results of your chain ring & cog gear ratio based on 3 different tire sizes 19 chain ring variants (47-65t) and 6 cogs (12-17t) for a total of 342 total calculations