I just want to give a shout out to my personal favourite gear calculator. It's interactive! You can drag the cogs around! But there's a huge gap between 20 and 12 teeth on the back.
http://ritzelrechner.de/?GR=DERS&KB=32&RZ=12,20,28&UF=1330&TF=90&SL=2.6&UN=KMH&DV=speed
@Five-Hats started
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I just want to give a shout out to my personal favourite gear calculator. It's interactive! You can drag the cogs around! But there's a huge gap between 20 and 12 teeth on the back.
http://ritzelrechner.de/?GR=DERS&KB=32&RZ=12,20,28&UF=1330&TF=90&SL=2.6&UN=KMH&DV=speed