I have several questions that arise from the fact that the current drivetrain on my old Peugeot road bike is pretty tough to ride when climbing up some steep hills: so I've got a 42/52 up front and 6 speeds (largest: 24) on the back.
So my first question: will changing the front to e.g. 39/52 setup make a noticable difference.
If so, can it be exchanged to e.g. some older/used crakset such as this Campa http://apro.bikemag.hu/files/4/2/listing_photo159024_555485241366650384.jpg
It has the same tapered square connection as the current one.