Humour me! gear rat...
 

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[Closed] Humour me! gear ratios and comparisons

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I have on my bike packing bike at the minute 11/42 with a  30T up front its on its last legs so considering 11/46 with a 32T now thinking 32  for a bit move varvar vroom on the flat how does the top gear compare when climbing easier on the 30 or 32  not a gear ratio wizard so any useful insight would be good


 
Posted : 13/03/2018 9:16 pm
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http://ritzelrechner.de/

Compare both setups side to side, all will become clear.

Also consider an oval ring - I reckon worth half a chainring size at either end in terms of effort.

http://ritzelrechner.de/?GR=DERS&KB=30&RZ=11,13,15,17,19,21,24,28,32,36,42&UF=2240&TF=90&SL=2.6&UN=KMH&GR2=DERS&KB2=32&RZ2=11,13,15,18,21,24,28,32,36,40,46&UF2=2240

There you go - a bit easier in the big sprocket and obviously a bit faster at the other end.


 
Posted : 13/03/2018 9:23 pm
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30/42 0.714

32/46 0.696 so easier gear


 
Posted : 13/03/2018 9:26 pm
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Cheers 🙂


 
Posted : 13/03/2018 9:38 pm
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Have a look at a Sunrace 46t cassette, less of a final jump between gears than Shimano.


 
Posted : 13/03/2018 9:45 pm
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Pondered the Sunrace option Scuff but heard of problems when back peddling and low on stock in the normal outlets!


 
Posted : 13/03/2018 9:47 pm
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What wheel size?

Ratios are sort of meaningless in isolation...


 
Posted : 13/03/2018 9:57 pm
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29 plus up front 😉

27.5 plus in the rear 🙂


 
Posted : 13/03/2018 10:03 pm
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Ratios are sort of meaningless in isolation…

If it's the same bike and just a swap it doesn't matter


 
Posted : 13/03/2018 10:06 pm
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Have you got clearance for the bigger ring. On my longitude I have to space the ring over so far to get a decent chain line that a 34 or 34 oval won't fit!


 
Posted : 14/03/2018 9:22 am

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