Help me with some 'cassette math'.
Alakar1
Posts: 10
My current set-up is 53/39 with a 27/12 rear. I am moving to Compact 50/34. What rear gear will match the old 27, given the new 34 up front? Sram has several choices in their cassette choice.
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a 39/27 is equal to 34/23.5 ie between 23 and 24 tooth.Alakar1 wrote:My current set-up is 53/39 with a 27/12 rear. I am moving to Compact 50/34. What rear gear will match the old 27, given the new 34 up front? Sram has several choices in their cassette choice.
cassette wise a 23 block will be a smidgen higher and 25 will be significantly lower.0 -
Just for you future headaches let Sheldon Brown take the strain:
http://sheldonbrown.com/gears/index.html0 -
what rake said
34/24 is the closest to 39/27Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer0 -
There are also a couple of iPhone apps that provide the answer to various combination. Or you could knock up a spreadsheet. PM me and I'll send you the spreadsheet I knocked up.0
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Can you not do simple divisions dude?0
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Nice, easy app here:-
http://software.bareknucklebrigade.com/ ... pplet.htmlNorfolk, who nicked all the hills?
http://farm4.static.flickr.com/3013/243 ... 8d.jpg?v=0
http://img362.imageshack.us/my.php?imag ... 076tl5.jpg
http://img216.imageshack.us/img216/3407 ... e001af.jpg0 -
EXCELLENT!!!! This worked beautifully....markos1963 wrote:Nice, easy app here:-
http://software.bareknucklebrigade.com/ ... pplet.html0
