Posted: 28 Sep 2020, 1:59pm
Is the height difference, relative to the front mech., between a 50t and 46t chainring fractionally over 8mm ?
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Maths indicate the difference in radius of the 2 rings should be 8.1mm assuming the tips of the teeth are spaced at 1/2" or 12.75mm123malford wrote:Is the height difference, relative to the front mech., between a 50t and 46t chainring fractionally over 8mm ?
Hope my maths is right! I haven't those sizes of chainrings to measure. However I've measured the difference between a 34 tooth and a 46 tooth and the difference in radius is close to 24mm - maybe 23.5mm, but not easy to measure. It's approximately 2mm radius difference per tooth eg 4 tooth difference is 8mm.123malford wrote:That's good. Many thanks.