This is something that is mentioned on various bike reviews. What does it mean? What is its significance?
You mean how many teeth on the cog? A gear cog or the pedal cog?The T is the number of teeth on the chainring, more teeth for a given gear set means a higher gear, less a lower gear. 52 is on the large side, often found as the largest chainring on a road bike as part of a triple chainring set.
Faster but with less torque so harder to go up hills/stiffer to pedal.A larger chainwheel allows you to pedal faster for the same effort? Yes?