Advertise on Bikeforums.net



User Tag List

Results 1 to 13 of 13
  1. #1
    Member
    Join Date
    Aug 2008
    Posts
    26
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    reverse brake lever help

    I switched out my drop bars for bullhorns with reverse/aero brakes. unlike my old brakes, these don't have any sort of spring in them, so when i brake I need to manually push the brakes back up, and the cables are really loose. If i tighten the cables, they rub on the wheels. I have the brake tension turned all the way up. Do reverse brake levers usually have a spring, or are they all like that? Thanks for the help!

  2. #2
    Senior Member CACycling's Avatar
    Join Date
    Feb 2008
    Location
    Oxnard, CA
    My Bikes
    '08 Fuji Roubaix RC; '07 Schwinn Le Tour GS; '92 Diamond Back Ascent EX
    Posts
    4,450
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The spring is in the calipers, cantis, etc. not the levers. You say you have the brake tension turned all the way up. What does that mean? Pics would help.

  3. #3
    hello roadfix's Avatar
    Join Date
    May 2003
    Location
    Los Angeles
    My Bikes
    thank you for asking
    Posts
    18,502
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sounds like you have too much friction within the cable housing or in the area where the cable exits the housing at the lever.
    .cinelli.olympic.surly.long.haul.trucker.kona.ku.surly.steamroller.
    .litespeed.classic.litespeed.firenze.bianchi.pista.dean.colonel.plus.more.

  4. #4
    Member
    Join Date
    Aug 2008
    Posts
    26
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I mean the little bolts on the calipers that you can tighten to adjust the tension on each side of the brake. I have those bolts screwed almost all of the way in. When I release the brake, it goes about 3/4 of the way back up, but not enough to keep the pads from rubbing...

  5. #5
    mechanically sound frankenmike's Avatar
    Join Date
    Jan 2007
    Location
    Dover, NH
    My Bikes
    rigid 29er moto, s-works stumpjumper fsr,black fixie,masi roadbike, ugly old hardrock commuter
    Posts
    1,260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    +1 There is definitely something wrong here, and it's not the lever lacking a return spring. Your cable slack should be taken up with the pinch bolt on the caliper, and shouldn't bring the pads closer to the rim.

  6. #6
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,255
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    sounds like a kinked cable or cable housing.

    regular calipers should have enough spring tension to return the cable and lever to it's original position.

    if these are V-brakes or cantis, use the next hole to make the spring open further.
    aero levers have a very weak spring in them, not as good as the one in the brakes.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  7. #7
    Old fart JohnDThompson's Avatar
    Join Date
    Nov 2004
    Location
    Appleton WI
    My Bikes
    Several, mostly not name brands.
    Posts
    13,134
    Mentioned
    14 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by holtzmanator View Post
    I switched out my drop bars for bullhorns with reverse/aero brakes. unlike my old brakes, these don't have any sort of spring in them, so when i brake I need to manually push the brakes back up, and the cables are really loose. If i tighten the cables, they rub on the wheels. I have the brake tension turned all the way up. Do reverse brake levers usually have a spring, or are they all like that? Thanks for the help!
    Return springs in brake levers are a relatively recent thing (last 20 years, say) and mostly came about because the convoluted cable routing under bar tape, through frame tubes, &etc introduced more friction into the system which the lever spring was intended to overcome.

    So, check your cable routing to avoid abrupt bends, make sure the cables and housings are in good condition, and in general do things to reduce friction in the system.

  8. #8
    Member
    Join Date
    Aug 2008
    Posts
    26
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My old brakes- springs and loose cables. new brakes- no springs and the cables are under the bar tape. Any suggestions for reducing friction? Thanks guys!

  9. #9
    hello roadfix's Avatar
    Join Date
    May 2003
    Location
    Los Angeles
    My Bikes
    thank you for asking
    Posts
    18,502
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Disconnect cable from brake caliper and feel to see if there's excessive resistance by squeezing the lever while pulling the caliper end of cable by hand.
    .cinelli.olympic.surly.long.haul.trucker.kona.ku.surly.steamroller.
    .litespeed.classic.litespeed.firenze.bianchi.pista.dean.colonel.plus.more.

  10. #10
    Member
    Join Date
    Aug 2008
    Posts
    26
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'll do that today, if there's a lot of friction but there arn't any kinks, besides redoing the brakes and hoping for less friction, is there anything else I can do? Buy coated coated cables or something?

  11. #11
    mechanically sound frankenmike's Avatar
    Join Date
    Jan 2007
    Location
    Dover, NH
    My Bikes
    rigid 29er moto, s-works stumpjumper fsr,black fixie,masi roadbike, ugly old hardrock commuter
    Posts
    1,260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Check for burrs at the ends of the housing, frayed cable, dinged ferrules, improperly seated housing. I've gotten good results by cleaning and lightly lubing the cables.

  12. #12
    Guest
    Join Date
    Jul 2008
    Location
    Grid Reference, SK
    My Bikes
    I never learned to ride a bike. It is my deepest shame.
    Posts
    3,769
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by holtzmanator View Post
    I'll do that today, if there's a lot of friction but there arn't any kinks, besides redoing the brakes and hoping for less friction, is there anything else I can do? Buy coated coated cables or something?
    My experience is that the extra friction after reassembling is usually caused by having the housing improperly seated in the cable-housing-stop in the lever. You can test for excessive cable friction (as noted above) by detachign your cable from the brakes and pull the cable with one hand and pullthe lever with the other... there should be almost no resistance.

    To fix:
    -Unwrap the bars, remove the cable and housing (look for any kinks or cripmed ends and fix),
    -Re-insert the cable, then the housing -making sure to fully insert and seat the housing into the brake lever... and I believe - although I am not sure - that you should not use a cable-housing ferrule on the lever end of the housing
    -anchor the cable housing in place with electrical tape at a few places along the bar where the housing will be under the bar tape.
    -test for cable friction by pulling the brake lever with one hand and pulling the cable back through with the other - there should be extremely little force necessary to pull the cabel back and open up the lever
    -attach your brakes and test again
    -re-wrap the bars

  13. #13
    Member
    Join Date
    Aug 2008
    Posts
    26
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    replaced the cables and shortened up the housing a bit, did the trick! Thanks a million guys!!

Posting Permissions

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