Originally Posted by
imobilinpedalus
Just one more thing. Is there such a thing as cross compatibility between say Shimano and Sram etc etc.as far as shifters and derailleurs go?
In my instance, what i am asking is if the SL-R460 shifters would have any chance of working together with my Sram Apex 2x10 RD (&FD) or is the cable pull too sensitive/specific for each brand that such a thing would be out of the question?
Could someone also (please) elaborate on the pull ratio chart and what this means:
CAPACITY,
MAX FRONT DIFFERENTIAL,
MIN LOW,
CAPACITY refers to the total amount of chain the derailleur can handle, which is calculated by determining
a) the difference in tooth counts between the biggest and smallest cogs, and
b) the difference in tooth counts between the biggest and smallest chainrings (if more than one.)
and adding those two numbers together. Also known as Total Gear Capacity or TGC.
MAX FRONT DIFFERENTIAL is the maximum value for the second number (b) described above that the rear derailleur can handle. This is dictated largely by cage length.
MIN LOW refers to the smallest low gear cog the derailleur will reliably shift to. Note that some of the derailleurs in the chart have mathematical expression for low gear range; the MIN LOW is the number on the left of the expression, smaller than which you should not use.