Originally Posted by
Darth Lefty
I was clicking around other people's links and came across this:
More here and here
Gear Theory for Bicyclists
My O.T.B. - Only The Best
This is a really big shift! 23 teeth. Obviously it's possible to install such a shift but how well could the upshift work?
The biggest shift on most common modern bikes is the 16 teeth between 50-34 on a compact. The MTB doubles have a bigger ratio shift at 36/22 but the number of teeth is smaller, 14.
SRAM has a new group out for E-bikes, it's the same range as an 11-speed MTB but has 8 speeds and bigger shifts. The shifts are uneven and I guessed the reason was to control the number of teeth between the gears. The upper shifts are all 8 teeth.
https://www.sram.com/sram/mountain/p...block-cassette
The Eagle 12-speed cassette also has a final shift of 8 teeth from 42 to 50.
What's the biggest shift you've seen? In ratio or teeth, at either end. Teeth are more impressive, I think.
Not sure exactly what you are asking but think I get the drift, here's 24,38,52 up front, and I think 12, 38 out back, maybe 36 9 speed Ultegra with Merz triple DA AX no close ups at the moment.
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