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  1. #1
    RoadBikeReview Member
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    Question about Tiagra flat bar brake levers (BL-4700)

    I am converting a drop bar road bike to flat bar, so I am looking for inexpensive brake levers that will work with road calipers.

    I was looking at the Tiagra BL-4700 levers. It is a road group so I assumed they work with road calipers.

    However, I am a little hesitant due to the claim that they are compatible with V-Brakes AND road calipers (and road disc brakes). How can it work well with both? They have different pull ratios.

    Do the levers have some sort of pull-ratio adjustment? Or is the pull just somewhere in between the two brake types (and sucks at both)?

    Thanks.

  2. #2
    RoadBikeReview Member
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    Not sure, but the product description on Amazon says "adjustable lever reach and transmission ratio." Some other sellers say adjustable "pull ratio," so I guess that's the deal. Shimano could have been a little more informative on their website.
    "Lay me down like a stone, O God, and raise me up like a loaf." Platon Karataev, War and Peace Book XII

  3. #3
    RoadBikeReview Member
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    I have used the BL-4600 with both road and V brakes, the adjustment is easy. I can't imagine the 4700 are any different.

  4. #4
    wim
    wim is offline
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    Shimano calls it "mode switching." Under "General Safety Information" in the tech doc.
    http://bike.shimano.com.sg/media/tec...9830753102.pdf

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