Page 1 of 2 12 LastLast
Results 1 to 50 of 59
  1. #1
    mtbr member
    Reputation:
    Join Date
    Feb 2008
    Posts
    38

    Fastest speed for a bike?

    Hi all, I'm just wondering what the limits are for a bicycle as far as speed goes. My fastest on my mtb going down a pretty long steep hill is 40.6mph with knobbies and locked out shock. The bike felt pretty stable getting up to that speed... although I'm not sure I can pedal my legs much faster than I was.

    I've recently picked up a rigid, even lighter mtb from Craigslist and just put on some Forte 1.25 skinny slicks and was thinking about taking it down that hill for a new personal speed record!

    So assuming a long steep hill with safe conditions and no traffic, how fast can a bike be taken up to? Whenever I get up to 30mph and up, (not very often at all) I can't help but think of the video of that dude eating it on the volcano!

    Btw, first bike is a 2006 f400 and my current ride is a....I dunno what exactly but it's a Bud Light edition Cannondale...M-something, I think.

    Also, what are your fastest speeds commuting? Anyone else constantly trying to bump up their speed record?

  2. #2
    mtbr member
    Reputation:
    Join Date
    Aug 2007
    Posts
    192
    Some idiot cop gave my friends wife a ticket back in 1980 for going 42 in a 35
    on a BIG downhill. Sure glad the police don't have any real crimes to be out preventing!

  3. #3
    nnn
    nnn is offline
    mtbr member
    Reputation: nnn's Avatar
    Join Date
    Feb 2005
    Posts
    799
    Well the outright speed record is something ridiculous, but those are very special bikes.

    I've done 80km/h on my AM bike with 2.3 Nokians down Demandolx pass in the Alps and that was with some help from buddies so couldn't really go much faster and it was very steep
    "Life begins at 140" Richard Burns
    http://www.nikolay-k.com

  4. #4
    mtbr member
    Reputation:
    Join Date
    Aug 2007
    Posts
    4,674
    I spin out on my fixed gear around 45mph. Look up the hour records, for those the pedal actually pedaled. There are videos of idiots going down mountains on bikes to get the highest speed. Human powered machines also have high speeds.

  5. #5
    mtbr member
    Reputation:
    Join Date
    May 2007
    Posts
    358
    In college (many years ago), my steel road bike and I often hit 50-55 mph on a hill outside san diego. That was with skinny tubular tires, and now that I think of it, no helmet. I didn't start wearing one until I got hit by a car the first time. Young and stupid...

    I think that the T de F guys hit 60 mph, and those mountain stages have scary turns too. According to wired, 81 mph is doable (http://www.wired.com/culture/lifesty...ikerecord_0330) on FLAT ground. But, you have to go to extremes...

    There is a vid of a guy doing 163kph (about 100mph). Then is bike fails pretty catastrophically. http://www.bestofgooglevideo.com/video.php?video=116

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    1,034
    How about 57.3mph (92.3kph). It's possible that I was going faster, I'm not sure at what point a Cateye Velo8's sensor hits the wall.



    That's on the bike shown below, except with 1.25" road tires, no fenders, and no front rack/bags (and no snow either!), descending Charles Road south of Spokane, WA (not part of my commute, unfortunately). It probably helps that it's a very heavy bike even in summer trim However, I'm pretty sure my Paramount can beat that; I'll have to try it next Spring.



    The main things to worry about are cross-traffic and flat tires. So if you're going for a new PR, be careful, and check your tires for embedded glass and stuff first.

  7. #7
    I Tried Them ALL... Moderator
    Reputation: Cayenne_Pepa's Avatar
    Join Date
    Dec 2007
    Posts
    6,021
    I hit 57.9mph on a 5% downhill.......not really- my cyclometer will misread the front wheel speed, if I raise the front wheel, while going downhill(zero rolling resistance=outrageous speed reading). My personal best on that same downhill was 41.1mph. I ride a 19-pound Cannondale XC race bike:
    Attached Images Attached Images

  8. #8
    mtbr member
    Reputation:
    Join Date
    Feb 2008
    Posts
    38
    Heh, I guess I won't worry about my bike flying apart then!

  9. #9
    local trails rider
    Reputation: perttime's Avatar
    Join Date
    Aug 2005
    Posts
    12,228
    I don't have a computer, but during a group ride I was told that we did something over 60km/h (35 to 40mph) on mountain bikes down a street. Maybe it is lack of practice but I start feeling vulnerable at those speeds.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Feb 2008
    Posts
    2,529
    I hit 26 mph on a singletack descent and felt vulnerable. My personal best is 32 mph on flat, and that's on the cross bike.

  11. #11
    I'm SUCH a square....
    Reputation: bigpedaler's Avatar
    Join Date
    Jan 2007
    Posts
    1,950
    My old Schwinn 10-speed took me on a sweet downhil roll in '74...56mph w/ a mechanical speedo.

    I've never topped 31 on my MTB, but my riding bud has done 37.6 on his Epic going home from work. He also had a Schwinn road bike once...hit 39.9, couldn't quite do the 40, on his commute.
    A bike is the only drug with no bad side effects....

  12. #12
    Cut Casing Whisperer
    Reputation: Mr.P's Avatar
    Join Date
    Feb 2005
    Posts
    5,350
    I broke 55mph a few times on the road bike. But after going OTB on Third Divide at full speed (40+ mph) on the MTB during the Downieville Downhill (and breaking my back) I don't think I'll be pushing for the speed again.

    55mph, with only 18 pounds of bike underneath you is quite the thrill.

    P

  13. #13
    B A N N E D
    Reputation:
    Join Date
    Apr 2007
    Posts
    4,596
    Here's a rocket powered mountain bike that did 236kph/147mph:

    http://www.swissrocketman.com/ete09.html

    http://www.youtube.com/watch?v=-vyOwvEKms8

  14. #14
    Blind biker
    Reputation: harry2110's Avatar
    Join Date
    Oct 2008
    Posts
    296
    Ive done 66mph on my mtb it was very scary since at the end of the hill was a curb drop and then another curb you had to hop over. I didnt think the bike was going to stay together as it was waddling from side to side.
    Last edited by harry2110; 11-30-2008 at 07:59 AM.

  15. #15
    Double-metric mtb man
    Reputation: Psycho Mike's Avatar
    Join Date
    Apr 2006
    Posts
    4,483
    I've managed a little over 43mph on the mtb with knobbies pedalling down an incline (moderate slope....nothing long or steep enough to generate truly scary speeds)
    As if four times wasn't enough-> Psycho Mike's 2013 Ride to Conquer Cancer Page

    Moran? Let your opinion be free -> F88me

  16. #16
    Card-carrying wotmeister
    Reputation: rabidweasel999's Avatar
    Join Date
    Oct 2006
    Posts
    853
    I probably hit 35 descending a 7-story parking garage today.

  17. #17
    mtbr member
    Reputation:
    Join Date
    Oct 2008
    Posts
    7
    62.5 mph on a long, but not too steep, hill. Awesome tail wind. 1.125 slicks on a MTB.



    Funny thing is; I didn't feel like it was that fast until I had to stop for lights at the bottom of the hill. Checked the speedo and wow!

  18. #18
    Card-carrying wotmeister
    Reputation: rabidweasel999's Avatar
    Join Date
    Oct 2006
    Posts
    853
    Did the cars notice?

  19. #19
    mtbr member
    Reputation:
    Join Date
    Oct 2008
    Posts
    7
    I don't think there were any. I live almost in the middle of nowhere. There may have been somebody at the bus stop though. :S

  20. #20
    BIG and Bald
    Reputation: FireBallKY's Avatar
    Join Date
    Apr 2004
    Posts
    397
    I hit 38 MPH one time on my mtb. It was on a short, steep paved road that abruptly stopped at a main highway. Not sure if I was worrying about crashing or being able to stop at the stop sign and not skidding out into traffic. Thank God for disc brakes. Flashes of my front wheel coming out of the fork kept popping into my head.
    Eat to Live...not the other way around

  21. #21
    Frt Range, CO
    Reputation: pursuiter's Avatar
    Join Date
    May 2008
    Posts
    2,569
    - single bike, Canadian Rockies, 7% grade ~52mph frt/rear racks with 50lbs of camping gear

    - tandem bike, TOMROV by Galena, 25% grade, 68mph (wife had her eyes closed)

  22. #22
    mtbr member
    Reputation:
    Join Date
    Jun 2007
    Posts
    19
    Before I removed my outer chainring, I hit a little over 34mph on my bike, an Ibex Asta with knobbies on the local paved trail. I matched that on some roads in the Indiana dunes, and I know I could've hit 40mph if I had the outer ring on.

  23. #23
    pro
    pro is offline
    mtbr member
    Reputation:
    Join Date
    Oct 2007
    Posts
    645
    I've done 40 on my road bike. You just get these small hills that really can slingshot if you kick it into a lower gear and spin.

  24. #24
    mtbr member
    Reputation:
    Join Date
    Jan 2008
    Posts
    647
    50mph on Clipper St. in SF. Could have gone faster if it weren't for that pesky stop sign at the bottom.

  25. #25
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    594

    gone close to 60

    on a road bike
    never have slicks on my mtb so I've done close to 35 on a clean offroad descent

  26. #26
    mtbr member
    Reputation:
    Join Date
    Sep 2004
    Posts
    139
    FYI...

    "Bike Hits 130.7 mph. On Snow"
    - http://blog.wired.com/gadgets/2007/0...its-1307-.html

  27. #27
    MTB Addict
    Reputation:
    Join Date
    Jun 2007
    Posts
    761
    My best was about 36mph down a hill on my MTB with 2.0 Schwalbe Big Apples. Kept pace with the cars just fine. The one time I was glad I had the clipless pedals on (even though I don't use them on trails).

  28. #28
    Happy Trails
    Reputation: Scott In MD's Avatar
    Join Date
    Sep 2008
    Posts
    1,090

    42.6 Mph...

    ... on a Specialized Tarmac, downhill, on Maryland Route 40 near the Appalachian Trail crossing. And I chickened out or could have gotten to 48, probably.

  29. #29
    mtbr member
    Reputation:
    Join Date
    Oct 2008
    Posts
    526
    Hitting the high speed bell is not where its at. Average speed is.
    The future is not google-able. William Gibson

  30. #30
    mtbr member
    Reputation: OhioGuy82's Avatar
    Join Date
    Sep 2006
    Posts
    52
    34.5 on my MTB downhill with knobbies.
    27.4 Sprinting on the Utopia. Yet to get it down a hill.
    2002 Schwinn Aluminum Comp. Beater.
    2009 Gary Fisher Utopia - Commuter.
    2009 Trek 1.2.

  31. #31
    weirdo
    Reputation: rodar y rodar's Avatar
    Join Date
    Jul 2006
    Posts
    6,221
    Quote Originally Posted by MABman
    Hitting the high speed bell is not where its at. Average speed is.
    You`re probably right, but that isn`t nearly as interresting.

    My fastest was 52 point something going down Kingsbury grade between the Tahoe Rim trailhead and my truck, parked near Genoa NV. Panaracer Fire XC 2.1s. Surprisingly, it wasn`t scary. The scarriest descent was about 42 with a BOB going down a short steep grade in a ritzy subdivision out of Doyle, CA. The road was almost straight with a little bit of sand on the surface and I was afraid to brake. I could see that it leveled off, so I just bombed it.

  32. #32
    mtbr member
    Reputation: AkMJ29's Avatar
    Join Date
    Jan 2008
    Posts
    126
    On a long, downhill, dirt road, I hit 36.something on a Gary Fisher Utopia. It had 1.25 tires and a cheap sus fork. Honestly, I could have went faster, but I was scared. The road was full of potholes and I really didn't want to test the bikes components. Or wipe out downhill on a dirt road full of gravel. Yes, I had a helmet and might have been able to push it more, but I really enjoy not being in pain.

  33. #33
    occupation : Foole
    Reputation: Fuelish's Avatar
    Join Date
    Dec 2003
    Posts
    2,545
    Fastest I've ever gotten up to was maybe mid 40's mph, downhill on a roadbike way back when ('80's) ....fastest on my commute has been about 38 mph on my Fuel w/ slicks, downhill also, of course. Where I now live, there's not enough level ground to find out what max I can achieve by pedaling alone .... it's either up- or down-hill - I ain't complainin', just sayin'

  34. #34
    mtbr member
    Reputation:
    Join Date
    Jun 2007
    Posts
    209
    51.2 kmh on a cross bike!

  35. #35
    mtbr member
    Reputation: Team Fubar Rider's Avatar
    Join Date
    Sep 2003
    Posts
    540
    Hit 55 on our C'Dale mountain tandem on road (with 1.25" slicks) going down a fairly big hill.

    Hit 55 on my mountain bike on a gravel road...there was a bit of puckering going on there.

    Hit 56 on my cross bike.

  36. #36
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    163
    man there are some real speeds on here.

    Only really clocked it once with some roadies but I hit 36 mph on my single speed cruiser with 2.5 street tires on a really long hill.

    I would love to try it again with skinny tires,a helmet, and a front brake.
    Attached Images Attached Images
    Last edited by elvez; 12-29-2008 at 10:03 PM.

  37. #37
    mtbr member
    Reputation:
    Join Date
    May 2007
    Posts
    308
    One time, with 10mph tailwind on a flat road, I sprinted my ass off to the point of pain and managed to maintain 35mph on a road bike in a 50/12 gear for a mile. Thats as fast as I've ever gone. I was blown away watching Cancellara, Leipheimer and the other pros last year in Palo alto who do that speed up a slight grade for close to 3 miles and make it look easy.

  38. #38
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    287
    56 on a rigid mountain bike going downhill. It was scary when I looked down and my arms started feeling wobbly and was afraid my rim brakes would overheat.

    Anyway, why do you even care about a max speed? It's all about average speed when commuting or racing.

  39. #39
    mtbr member
    Reputation:
    Join Date
    Jan 2009
    Posts
    2

    human powered vehicles

    82.33 mph on a streamlined recumbent bicycle called the Varna Diablo III. About 8 feet long, 17 inches wide, with only 5 gears (top gear of over 240 gear inches). Rider had five miles of flat desert highway to build up speed before going through a 200-meter long (1/8 mile) timing trap. I was a witness to history several times at an event called the WHPSC World Human Powered Speed Challenge in Battle Mountain, NV.
    The above rider Sam Whittingham, is currently 36 years old, a former Canadian national cyclist, and has recently built a bike purchase by Lance Armstrong, however you won't see him riding it in the Tour de France. Sam generates about 500 watts of power during his run. Oh, did I mention, he won a prize of over $26,000 for going so fast..
    Event website: http://www.wisil.recumbents.com/home...isil/whpsc2008
    Discovery Channel special on the event: http://www.youtube.com/watch?v=5V2FgwN_re4

  40. #40
    mtbr member
    Reputation:
    Join Date
    Jan 2009
    Posts
    2
    Recumbents are faster! I've gone down a hill at 48 mph on a recumbent lowracer bike. On the same hill, I reached only 42 mph on my Cervelo time trial bike.

    On a MTB bike with 26x1.25 tires, a 48 x 11 top gear, bolt-on aerobars, a heavy backpack, I reached 42.2 mph on a downhill. I was spinning at what I calculate to be 129 rpm.

  41. #41
    mtbr member
    Reputation: shrpshtr325's Avatar
    Join Date
    Dec 2008
    Posts
    84
    well on my mtn bike w/ knobbies on a downhill i hit 45.x speed limit was 35 (went past a couple of cars, they DID give me looks ), got a followed by the cop that was sitting at the bottom for a little bit, but nothing came of it :/

    btw this was on my trek 3700
    I cant spell deal with it!

  42. #42
    mtbr member
    Reputation: scoodah's Avatar
    Join Date
    Sep 2008
    Posts
    6
    I hit 55mph. on a mtb going down the watershed hill in Lincoln Ma. just east of Walden pond. I want a recumbent with a fairing now to blaze the rail trail on cape cod. and try to average 30mph or so .

  43. #43
    mtbr member
    Reputation: liam2051's Avatar
    Join Date
    Apr 2008
    Posts
    849
    So far ive been 87.6KM/H on my Cervelo Soloist Carbon but ive got another hill in mind that could blow me well over the 100 mark possibly even over the 110 mark ill check it out and report with photos

  44. #44
    mtbr member
    Reputation: Hellrazor666's Avatar
    Join Date
    Oct 2008
    Posts
    470
    I have done 41.5 on my fs mtb with a set of holly rollers on. It is short hill but pretty steep and not a lot of room to build up speed. I also hit 31.5 on a flat road with speed bumps with fs mtb and man I'm beat after that and also with the holly rollers on. My old bike weighed in at 33 lbs and so doing that on flat road is not an easy task from what I have been told

  45. #45
    Devo
    Reputation: SelfPropelledDevo's Avatar
    Join Date
    Oct 2005
    Posts
    3,617
    www.AsanaCycles.com
    "Bicycle Lifestyle, realized." D.G.

  46. #46
    mtbr member
    Reputation: Ultra Magnus's Avatar
    Join Date
    Jan 2004
    Posts
    2,163
    Here in the high desert of Sunny SoCal with our wonderful prevailing winds coming from the SSW- I could regularly do 30 - 35mph on flat ground on my full knobbie mtb. The fastest I've gone is 45mph on short 5% downgrade, depending on the winds.


    BM
    "I've come to believe that common sense is not that common" - Matt Timmerman

  47. #47
    Blind biker
    Reputation: harry2110's Avatar
    Join Date
    Oct 2008
    Posts
    296
    Quote Originally Posted by pedalitup
    One time, with 10mph tailwind on a flat road, I sprinted my ass off to the point of pain and managed to maintain 35mph on a road bike in a 50/12 gear for a mile. Thats as fast as I've ever gone. I was blown away watching Cancellara, Leipheimer and the other pros last year in Palo alto who do that speed up a slight grade for close to 3 miles and make it look easy.
    Ive done 30mph on my HT with a full backpack for about a mile

  48. #48
    Blind biker
    Reputation: harry2110's Avatar
    Join Date
    Oct 2008
    Posts
    296
    I just went even faster. I just hit 70mph going down mosier knob road in New albany, In on my MTB with 1.75 slick on it. Its a 600ft descent over 1miles but the bottom it really drops out and becomes straight so I just went for it. I was wearing sony in-ear headphones( not the cheap ones) and they were about to be ripped out from the wind.

  49. #49
    Edibles
    Reputation: spongstick's Avatar
    Join Date
    Feb 2004
    Posts
    382
    Sounds likes some good fishing stories.
    My oem parts 14 screws 3 plates and two hip replacement.I hope that's enough upgrades.

  50. #50
    Devo
    Reputation: SelfPropelledDevo's Avatar
    Join Date
    Oct 2005
    Posts
    3,617
    Gordon McCall
    http://www.teammccallusa.com/

    the current land speed record is 166.9 MPH

    Gordon is trying for 180 MPH
    Attached Images Attached Images
    www.AsanaCycles.com
    "Bicycle Lifestyle, realized." D.G.

Page 1 of 2 12 LastLast

Posting Permissions

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