Advertise on Bikeforums.net



User Tag List

Results 1 to 19 of 19
  1. #1
    ogre
    Join Date
    Oct 2004
    Location
    arlington, va
    My Bikes
    surly steamroller fixie, '90 cannondale SR 800
    Posts
    399
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    ever tested your stopping distance?

    i was just curious if anyone's ever picked a riding speed and then tried to see how quickly they could stop -- skipping, powerslides, whatever it takes...

    i'm going brakeless (sometimes) and was interested

  2. #2
    i am sure that i hate you spud's Avatar
    Join Date
    Aug 2005
    Location
    703
    My Bikes
    'Cha-ruzu Fosuta Orusan Kein' Fuji Track (2005), Schwinn Tank MTB (?), Fuji Royale (1979)
    Posts
    3,230
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i did inadvertantly last week and was rather surprised how short it was, but i wasnt really cruising or anything.
    putting the pi back in pirate!
    It’s an upstanding member of the solar system
    Apply the laws of earth and make it a victim
    Of Proposition 187

  3. #3
    anarchy burger skelly's Avatar
    Join Date
    Jul 2005
    Posts
    969
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's hard to imitate (mentally) the need to stop suddenly. About a week ago I almost ate the front of a car and I had more distance to stop than I usually need when I test my stopping distance. Instead of putting my body into action to stop, my mind just sort of went "Oh ****" for about 4 feet. That doesn't happen in the comfort of an empty road.

  4. #4
    ogre
    Join Date
    Oct 2004
    Location
    arlington, va
    My Bikes
    surly steamroller fixie, '90 cannondale SR 800
    Posts
    399
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by skelly
    It's hard to imitate (mentally) the need to stop suddenly. About a week ago I almost ate the front of a car and I had more distance to stop than I usually need when I test my stopping distance. Instead of putting my body into action to stop, my mind just sort of went "Oh ****" for about 4 feet. That doesn't happen in the comfort of an empty road.
    yeah that's definitley true. that 4 feet of "oh ****" was enough to send me flying over the little moped-thing i hit a few weeks ago.

    i guess i was thinking more along the lines of the brakeless vs. braked stop, since some argue that you can stop just as quickly... i don't really believe it, but i wonder how much of a difference there is

  5. #5
    Bikes are Fun honduraz10's Avatar
    Join Date
    Jan 2005
    Posts
    188
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    ive developed an instinctive skid after alot of close calls so i dont have that four second period. and since my normal skid is seated i can stop from 20mph in 8-12 feet (somewhere in there- i measured it a while ago at 11 but ive gotten better)
    ride those things!!

  6. #6
    anarchy burger skelly's Avatar
    Join Date
    Jul 2005
    Posts
    969
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    theres a million brakes vs. brakeless arguments here if you search for them, no need for another.

    if you put time in on the bike and it will be more instinctive. or just ride behind your friends car and tell him to stop randomly...

  7. #7
    PS NOT STOLEN Mouton's Avatar
    Join Date
    Oct 2004
    Location
    San Francisco, CA
    My Bikes
    57cm NJS Bridgestone
    Posts
    631
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I do like the idea of a shortest-skid competition. I suppose from a given speed, lighter people would have an advantage?

  8. #8
    cxmagazine dot com pitboss's Avatar
    Join Date
    Jun 2003
    Location
    WI
    My Bikes
    Titus road, Fort CX
    Posts
    8,270
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    mine is auspicious.
    Deathlap - cyclocross, training, beer,...escape hatch

  9. #9
    Senior Member thatcher's Avatar
    Join Date
    Jan 2005
    Posts
    285
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    you can do a seated skid?

  10. #10
    Better than you since 83! junioroverlord's Avatar
    Join Date
    Oct 2004
    Location
    Up a big F'ing Hill
    My Bikes
    Fixed Gear 79 Schwinn Sprint
    Posts
    1,117
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I can do a seated skid as well as a one footed skid. I got to test my stopping distance today when an SUV decided to slam on thier brakes in front of me while I was riding to work. Luckily I can say my stopping distance is just right. Stopped two inched from his back bumper. Go me!
    "Riding bikes on the street is the fuggin jam!" Juvi-Kyle

  11. #11
    Senior Member jandops's Avatar
    Join Date
    Jul 2005
    Posts
    128
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by thatcher
    you can do a seated skid?
    oh man i fooling around doing some seated skids
    and i pulled the cleat right out of the clipless pedal
    now its ruined

  12. #12
    LF for the accentdeprived
    Join Date
    May 2005
    Location
    Budapest, Hungary
    Posts
    3,550
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Mouton
    I do like the idea of a shortest-skid competition. I suppose from a given speed, lighter people would have an advantage?

    No. It takes a bigger stopping power (like better brakes, if you have such a thing) to stop a lerger mass from the same speed on the same distance, but here the limitng factor is the grip of the tyre on the road. The bigger the weight of the rider, the bigger the force that presses the tyre onto the asphalt. So if you're twice as heavy as I am (not at all unlikely, BTW), you will need twice the grip to get the same deceleration, but you will automatically have twice the grip. Even field.
    Quote Originally Posted by dutret
    Do you deny that you are clueless or do you just think that "moron" didn't need to be tacked on there?
    Bike on flickr and on FGG

  13. #13
    roll'em high shants's Avatar
    Join Date
    Feb 2005
    Location
    columbus, ohio
    Posts
    2,392
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if you do a super-ridiculous skid into a sideways slide, you can stop on the quick. the issue, of course, is in remembering to do that when some ******bag in a uhaul decides to cut you off.

  14. #14
    Fear the banana YellowFixedGear's Avatar
    Join Date
    Apr 2005
    Location
    New York City (Uptown)
    My Bikes
    1950s EG Bates track & 1960s Frejus track
    Posts
    719
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by thatcher
    you can do a seated skid?

    im 185lbs. I tried to do a seated skid a few times and it just wasnt happening. I have to get my fat ass off the rear and into the front if I want to skid

  15. #15
    Frankly, Mr. Shankly absntr's Avatar
    Join Date
    Oct 2002
    Location
    Chicago
    Posts
    3,485
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    In an emergency situation, and you start to backpedal with all the power your legs can muster, you will find yourself in a seated skid. I've done that a few times and it works pretty well. Enough that I started practicing it and it's enough to slow me down to unclip and foot-down-stop if need be.

    I have found though, that even a little unweighting of the saddle -- even if you hover above it -- will produce a skid better than a seated one. So try that instead.

  16. #16
    Banned.
    Join Date
    Oct 2004
    Posts
    4,428
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I challenge any brakeless rider to a stopping contest.

    I have a brake.

  17. #17
    psn
    psn is offline
    Physics Junkie
    Join Date
    Aug 2005
    Location
    Cambridge, MA
    My Bikes
    Surly Steamroller, GT Pulse, Specialized S-Works E5
    Posts
    318
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    How about we do a *stoppie* contest? Then you'll *need* a front brake to compete.

    I can do those like a pro on my Giant (flat bars and canti brakes). Done a few on my Jamie Roy...it's kind of scary doing it with a long bike and road bars, but I guess I'll get the hang of it.

  18. #18
    Senior Member thatcher's Avatar
    Join Date
    Jan 2005
    Posts
    285
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    respect

  19. #19
    dead mileage techone's Avatar
    Join Date
    Aug 2004
    Location
    London U.K.
    My Bikes
    GT Mtnbike, PaulMilnes Trackbike
    Posts
    480
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The object is, not to stop.
    A hard (seated, even) sideways skid will give you enough of a second to go around the back or side of whatever is in your path.

    That's not saying to go out and bomb through every junction no matter what kind of traffic is crossing and think you can just skid around the cars! I stop at 80% of lights and bomb through the rest if it's clear.

    Pedestrians don't count since they're so small of a target!

    Eh, all that saying... it takes me quite a while to come to a complete stop. If I'm trying to, it just might be shorter than if you tried to use a rear brake alone to come to a stop.
    But as said above, in a do-or-die situatuion, I can stop on a dime! Can't re-create that for all the dimes in the world though.

Posting Permissions

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