Cycling Equipment · Public discussion

Off-road braking techique/equipment

Started by Doug Taylor · · Last activity · 3 posts · 183 views

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Cycling Equipment
Published
25 September 2007
Last activity
25 September 2007
Original author
Doug Taylor
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3
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  1. Here's a new rbt topic to heat things up and beat to death, now that
    jambo v. beam is history.

    The cycling club I am in has regular road rides every Wed. eve, and
    Sat. and Sun. mornings, from spring through fall each season. I do at
    least two a week, sometimes 3 depending.

    We have an off-road group which ventures out twice a month +/- in the
    spring and summer, and more frequently in the fall (including evenings
    with lights).

    When riding on the road, the gospel of braking technique is found
    here:

    http://draco.acs.uci.edu/rbfaq/FAQ/9.17.html

    and here:

    http://www.sheldonbrown.com/brakturn.html

    On the above, all agree. Right?

    Off road, we add this to the mix:

    "In loose terrain, use more back brake than the front. The front has
    less traction because it is being "plowed"."

    "Never brake when flying. If you are flying in the air (off a jump,
    drop off, ruts), do not touch the front brake. If you land with your
    front tire stopped, you can expect a huge endo."

    Subject: 2C. Braking,
    http://www.faqs.org/faqs/bicycles-faq/mountain-bikes/

    and

    "Slippery surfaces. On good, dry pavement, it is generally impossible
    to skid the front wheel by braking. On slippery surfaces, however it
    is possible to do so. It is nearly impossible to recover from a front
    wheel skid, so if there is a high risk of skidding, you're better off
    controlling your speed with the rear brake.

    Bumpy surfaces. On rough surfaces, your wheels may actually bounce up
    into the air. If there is a chance of this, don't use the front brake.
    If you apply the front brake while the wheel is airborne, it will top,
    and coming down on a stopped front wheel is a Very Bad Thing."
    http://www.sheldonbrown.com/brakturn.html

    I have two off-road bikes: 1) full suspension with front and rear
    disc brakes; 2) fully rigid single speed geared at 32:17, formerly
    with front and rear V-brakes.

    My single speed was out of commission all last season, due to decrease
    in off road riding because of unusually high wet trail conditions.

    This season it has been dry as a bone, and off road riding frequency
    has been way up, both alone and with the group.

    After a few rides on the dualie, I took the single speed out in July,
    and having not ridden with the V-brakes for over a year, I immediately
    noticed how they noticeably and substantially under perform as opposed
    to discs, particularly and especially in terms of modulation. STOP.
    This in not the topic under debate in this thread; the superiority of
    discs is accepted as fact in the off-road world.

    My single speed frame and forks are trusty old school steel with no
    disc tabs. So I decided to replace the front forks, wheel and brake
    calipers from V-s to disc, and leave the back with V-s, avoiding
    having to add some sort of disc mounts to the seat or chain stays, and
    finicking with adjustments with the horizontal drop outs.

    I figured that front modulation was more important than rear, and
    that the stopping power of v-s on the back would suffice when the
    terrain demanded a rear brake.

    I love the new set up and think I made the right choice.

    Took the bike out with the boys over the weekend, and received the
    comment that I should have done it the other way around: v-s on
    front, disc on rear.

    Topic under debate: Who's right and why?

    P.S. "It makes no difference inasmuch as discs and V-s are equivalent"
    is not an acceptable comment.

  2. Doug Taylor said:

    Took the bike out with the boys over the weekend, and received the
    comment that I should have done it the other way around: v-s on
    front, disc on rear.

    Topic under debate: Who's right and why?

    P.S. "It makes no difference inasmuch as discs and V-s are equivalent"
    is not an acceptable comment.

    No point in a rear disk only, unless you want to slide your rearwheel
    all the time which tears up the countryside

    Frontwheel lockup is often recoverable on the loose
    Modulation is pretty important when braking hard or going down a steep
    incline

    --
    /Marten

    info(apestaartje)m-gineering(punt)nl

  3. Per Doug Taylor:

    Quoted message said:

    I figured that front modulation was more important than rear, and
    that the stopping power of v-s on the back would suffice when the
    terrain demanded a rear brake.

    I love the new set up and think I made the right choice.

    Took the bike out with the boys over the weekend, and received the
    comment that I should have done it the other way around: v-s on
    front, disc on rear.

    Topic under debate: Who's right and why?

    I'm with you. Modulation is the most important on front - not
    only because it's the "heavy lifting" brake, but also because
    it's the one with the greatest penalty for washing out.

    Dunno about the locking up the rear wheel thing. Maybe it's
    different where those guys are riding, but around here it tears
    up the trails.
    --
    PeteCresswell

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