Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Senior Member
    Join Date
    Jun 2011
    Posts
    211
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Noob Gearing Question

    Hello,

    I downloaded an iPhone app called Shiftit! to help me understand the gears, rpm and speeds.
    I have a compact ultegra 6700 50/34 and 11-28 cassette

    I find myself often in 34/13 (rpm 90 - 18 mph), my question is should I switch be in the 50/19 instead of the small clog?
    Does it make a difference?
    Does the angle of the chain on the 34/13 pose a problem?

    Thanks

  2. #2
    Senior Member
    Join Date
    Sep 2007
    Posts
    8,381
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    They are almost the same gear. The 19 and the 50 are probably more aligned (by a bit at least). Thus, there would be a bit less wear/friction in the 19/50 (it would be slightly more efficient). The wear will also be less for a larger cog/chain-ring.

    If you are likely to need to shift to lower gears (for upcoming hills), then using 34/13 might be preferable. If you are likely to shift to higher gears, then 50/19 would be preferable.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •