March 7, 20179 yr Hi. I am looking at a Cube bike with Bosch performance CX drive unit and would like to calculate driving speeds for different gears and cadence. The problem is I can not find out what the ratio between pedal RPM and sprocket RPM for Bosch CX drive is? Thank you for any info!
March 7, 20179 yr 2,5 is the ratio, so a 16 tooth sprocket gives in effect a 40 tooth front sprocket.
March 7, 20179 yr Author Great! I could not find this anywhere! Thank you! Glad to see I will not have to pedal like crazy to go 20mph.
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