Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 27
  1. #1
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    What Just Happened??

    I've had quite a few accidents after riding for over 25 years, but my latest one has left me wondering how it happened. Maybe some of you can help me figure it out.

    I was riding down a busy, shoulderless road and started a slight acceleration since the traffic started moving from a stoplight (I didn't have to stop, since I was far enough away).

    I was standing up, during my acceleration, but it wasn't a strong acceleration, but this is where it gets confusing.

    I believe I felt my pedals lock up and there seemed to be a downward pressure placed on my right big toe and then all of a sudden I was thrown down to the pavement on my left side. Luckily the closest vehicle behind me was just far enough for me to jump out of the way and get on the curb.

    The damage to my bike base on a cursory roadside inspection: Broken mirror (mounted left side of bike); chain off chain ring (between frame and chain ring); rear wheel totally out of true; front brake needed adjusting; rear brake needed adjusting due to wobbly wheel. These problems found during cursory inspection, will complete more detailed inspection and repairs probably sometime today.

    I did a quick truing of the rear wheel and adjustments to the brakes and rode 5-miles home. As I was riding I was trying to figure out what happened, focusing on my right foot, since I felt that pressure come down on my big toe; I have no idea what that was. The accident kind of felt like what happens when you squeeze the front brakes at speed, but I wasn't slowing down, I was accelerating.

    Anyone ever have an accident that left you wondering what happened?



    Here are a couple of pics of some of my injuries, the other injuries are internal and show no external signs, such as some very sore ribs on my left side. All in all I'm ok and will be back on the bike as soon as I do a thorough inspection and repairs.

    BTW, my right big toe is also sore, so something did happen to it, but I just can't figure out what would have caused that downward pressure.


    http://i1128.photobucket.com/albums/m484/76gunner/Bike%20Accident%20Injuries/010_zps4964ebc2.jpg


    http://i1128.photobucket.com/albums/m484/76gunner/Bike%20Accident%20Injuries/ac464923-212d-44b1-b60f-bcaf7ed107f8_zpsec3b15b7.jpg
    Last edited by Siu Blue Wind; 08-02-14 at 01:47 AM. Reason: ewww nasty owie
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  2. #2
    Senior Member Looigi's Avatar
    Join Date
    Dec 2010
    Posts
    7,603
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Puzzling. At what position in crank rotation was your right foot when you felt the crank lock and pressure on your big toe? Was there any debris, sticks, etc in the road that might have gotten picked up and jammed the works? Judging from your description of the bike after the crash it doesn't sound like it was caused by something on the bike failing.
    Ride more. Fret less.

  3. #3
    Rhapsodic Laviathan
    Join Date
    Jan 2013
    Location
    Louisville KY
    My Bikes
    schwinn probe and henderson, lotus pegasus, sears&roebuck, mongoose deception, nishiki prestige, Trek 800 sport single track, Diamondback Drifter1
    Posts
    295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had a similar accident years back when I had a Mongoose xr250. I was standing pedaling down a hill, somehow my foot slipped off, I went down and the bike did something like flip over me, I cant remember, i think I fell to the right of it. All I remember is its crank cutting in to my leg, leaving seven gashes of different degrees, probably rolling accross my leg in the process, and it sliding some.

    I do remember some guy stopping o ask if I was okay, and promptly driving off before I could llift my head enough at him for a direct answer.
    The speed is break neck, faster than a high speed dual cassette tape deck.

  4. #4
    apocryphal sobriquet J.C. Koto's Avatar
    Join Date
    May 2008
    Location
    Star City, NE
    My Bikes
    2008 Surly Long Haul Trucker "The Truckerino"
    Posts
    902
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Did your foot slip off the pedal and hit the ground hence the feeling of pressure hitting your toe?

  5. #5
    Senior Member RPK79's Avatar
    Join Date
    May 2013
    Location
    SE MN
    My Bikes
    Fuji Roubaix Pro
    Posts
    4,165
    Mentioned
    31 Post(s)
    Tagged
    0 Thread(s)
    Attempted alien abduction.

  6. #6
    7-speed doomsday prepper ThermionicScott's Avatar
    Join Date
    Aug 2011
    Location
    CID
    My Bikes
    1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX
    Posts
    8,905
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    Did any spokes break, or did the wheel just spontaneously taco?

    If the rear wheel just locked up while you were pointing your right foot downward, perhaps your weight shifted forward enough that your right toes were pointing backward, and the pressure applied was from the toe of your shoe itself.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  7. #7
    Senior Member
    Join Date
    Sep 2012
    Location
    NW Arkansas, USA
    My Bikes
    2012 Giant Sedona Hybrid
    Posts
    765
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hope you mend well and soon!

    Could it be the chain slipped off the chain ring and the pedal rotated so rapidly you either stumbled or actually lost your footing and stepped through the frame?

    BTW: Anyone else have troubles wiht the second pic? I stared at it for like 3 minutes before I realized it was your elbow sticking out. I couldn't for th elife of the figure out what part of your anatomy it was at first.

  8. #8
    Senior Member
    Join Date
    Mar 2012
    Location
    Tallahassee, FL
    Posts
    1,473
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I didn't realize that second pic was any part of the human anatomy.

  9. #9
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Hey you all, thanks for the replies. Let me try to address them all, but I have to emphasize that I'm not sure of the exact sequence of events since it happened so quick, so my answers are the best I can recollect and I have to admit I'm starting to wonder if I'm creating false memories.


    Quote Originally Posted by Looigi View Post
    Puzzling. At what position in crank rotation was your right foot when you felt the crank lock and pressure on your big toe? Was there any debris, sticks, etc in the road that might have gotten picked up and jammed the works? Judging from your description of the bike after the crash it doesn't sound like it was caused by something on the bike failing.
    I want to say that I think my foot was in the 7-8 o'clock position (coming from the six o'clock to the 12 o'clock position). I've been wondering if there was possibly some foreign debris that got stuck in my drivetrain and I even entertained the thought that someone threw something into my drive train (I'm sure that's not true), but I don't know; I did go back to the scene today to see if I could find anything, but only found two pieces of plastic and three strips of what seems like the same tire (pics below).

    Quote Originally Posted by J.C. Koto View Post
    Did your foot slip off the pedal and hit the ground hence the feeling of pressure hitting your toe?
    I don't believe so, because I've had that happen before. -- I even had my foot slip into the front spokes and broke a few (separate accident) -- I bought new pedals after that accident, because those pedals were so old and could no longer be adjusted. I don't remember ever feeling my foot slip off the pedals. BTW, I ride around with SPD pedals and they are fairly new.
    Quote Originally Posted by ThermionicScott View Post
    Did any spokes break, or did the wheel just spontaneously taco?
    No spokes broke, just a very out-of-true rear wheel, but I don't know if that wheel taco'ed and caused the accident or the accident caused the wheel to be out of true. I have had both scenarios happen in the past and when either the wheel taco'ed or I when I popped spokes it never resulted in a crash like this, where I was so quickly thrown to the ground.

    And there was one time where a car pulled out in front of me and I T-boned it with my front wheel and surprisingly the front wheel was fine, but the rear wheel got taco'ed -- The bike and I hit the ground really hard that time.

    Quote Originally Posted by ThermionicScott View Post
    If the rear wheel just locked up while you were pointing your right foot downward, perhaps your weight shifted forward enough that your right toes were pointing backward, and the pressure applied was from the toe of your shoe itself.

    Yes, I've thought of that too, I just don't know. The traffic was very heavy at the time and I was very focused on the traffic. When I get my bike back up and operational I'm going to look at stuff like this some more.

    Quote Originally Posted by Rootman View Post
    Hope you mend well and soon!

    Could it be the chain slipped off the chain ring and the pedal rotated so rapidly you either stumbled or actually lost your footing and stepped through the frame?
    That's something else I've been wondering did the chain slip off causing a jam in my drivetrain or did the accident cause the chain to fall off...I don't know, but I feel confident that if the chain did fall off it did not freewheel, because I would of felt the freewheel effect, because I've felt that many times before.


    Thanks all, I'll continue thinking about this; I've been in quite a few accident, but never one I didn't know what happened. That's a disconcerting thought.


    BTW, here are the pics, don't mean anything to me now, but maybe after I look at my bike in more detail these pieces will make sense, but probably not...and the road itself was free of cracks and bumps....










    Most interesting of the three pieces of tire










    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  10. #10
    Senior Member brianmcg123's Avatar
    Join Date
    Oct 2002
    Location
    TN
    Posts
    456
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A similar event happened to a friend of mine. He was riding with a group and he heard a noise on his rear wheel. He pulled over to make sure everything was o.k and he didnt see anything. When he started back up he started to hammer to catch back up to the group then suddenly he flipped over his handlebars just how you described. He had a lot of damage to he rear derailer.

    The best we could figure something had happened to one of his rear jockey pulleys that made the chain seize. When this happened at the time of his acceleration he was putting down as much force as he could but all the force went into leveraging his bike over his head instead of pedaling in circles.

    Pretty weird.
    Everyone's a roadie, they just might not know it yet.

  11. #11
    Senior Member
    Join Date
    Apr 2010
    Location
    Vancouver, BC
    My Bikes
    2010 Surly LHT, 1999 Rocky Mountain Turbo
    Posts
    1,147
    Mentioned
    23 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by brianmcg123 View Post
    A similar event happened to a friend of mine. He was riding with a group and he heard a noise on his rear wheel. He pulled over to make sure everything was o.k and he didnt see anything. When he started back up he started to hammer to catch back up to the group then suddenly he flipped over his handlebars just how you described. He had a lot of damage to he rear derailer.

    The best we could figure something had happened to one of his rear jockey pulleys that made the chain seize. When this happened at the time of his acceleration he was putting down as much force as he could but all the force went into leveraging his bike over his head instead of pedaling in circles.

    Pretty weird.
    This sounds very plausible. I suspect he kicked something up and it hit his toe then into his RD and seized the pulley and events followed as described. I wonder if a piece of rubber hit your foot, "rode" the chain to the lower pulley and jammed it.

    I regularly (few times a week) kick up stones/stuff with my front wheel and they hit my feet. It does seem to be my right foot more often than my left one also? Maybe there are more road debris to the right of my line is the answer to that.

    I have experienced free hub body failures, but never anything so sudden or catastrophic.

    Heal up fast.

  12. #12
    Senior Member brianmcg123's Avatar
    Join Date
    Oct 2002
    Location
    TN
    Posts
    456
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by joeyduck View Post
    This sounds very plausible. I suspect he kicked something up and it hit his toe then into his RD and seized the pulley and events followed as described. I wonder if a piece of rubber hit your foot, "rode" the chain to the lower pulley and jammed it.

    I regularly (few times a week) kick up stones/stuff with my front wheel and they hit my feet. It does seem to be my right foot more often than my left one also? Maybe there are more road debris to the right of my line is the answer to that.

    I have experienced free hub body failures, but never anything so sudden or catastrophic.

    Heal up fast.
    I figure the extra pressure he felt was from the increased pressure on his foot because of the resistance when the chain seized up. I'm sure it feels weird at first if the pedal doesn't go down but instead brings the real wheel up.
    Everyone's a roadie, they just might not know it yet.

  13. #13
    Senior Member Looigi's Avatar
    Join Date
    Dec 2010
    Posts
    7,603
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jon c. View Post
    I didn't realize that second pic was any part of the human anatomy.
    It had me wondering too. It took me a while before I saw it was an elbow.
    Ride more. Fret less.

  14. #14
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,975
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't know about what happened to you personally, but that's a pretty common type of bicycle accident which can produce quite serious injuries.

    The issue is rolling off the edge of the pavement and trying to steer back. Oftentimes there's an edge on the side of the pavement. If you try to roll over that edge at an angle, your bike will tip you over to the left.
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  15. #15
    Senior Member
    Join Date
    Apr 2010
    Location
    Elevation 666m Edmonton Canada
    My Bikes
    2013 Custom SA tourster
    Posts
    517
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What's with the broken strap pics? It got caught in your wheel? That would explain everything.

  16. #16
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Retro Grouch View Post
    I don't know about what happened to you personally, but that's a pretty common type of bicycle accident which can produce quite serious injuries.

    The issue is rolling off the edge of the pavement and trying to steer back. Oftentimes there's an edge on the side of the pavement. If you try to roll over that edge at an angle, your bike will tip you over to the left.
    It's funny you should mention that, because that was my very first major bike accident way back in the mid-80's; even to this day if I get too close to the edge of the road I think of that day. It did throw me off the bike faster than I've ever been thrown before.
    Quote Originally Posted by GamblerGORD53 View Post
    What's with the broken strap pics? It got caught in your wheel? That would explain everything.
    I was grasping at straws... I went back to the scene of the accident yesterday looking for any possible debris that could have caused my accident; however, I just got done working on my bike and suffice it to say, those things have nothing to do with my accident and they have been thrown away.

    I'm posting my findings/theory in the below post...
    Last edited by work4bike; 08-02-14 at 03:18 PM.
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  17. #17
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    First let me list two important factors I didn't give enough mention to earlier, mostly because I hadn't done a thorough inspection as of the posting of this thread; the inspection I did along side the road was with me not the best frame of mind -- it was a super hard crash. I did not look at the bike yesterday, was just too sore.

    First factor: My front wheel was slightly out of true, enough to cause my front wheel to lock up as I was pushing the bike on the sidewalk. I simply assumed that was from brake damage from the accident -- it was not.

    Second factor: This is a brand new bike, only had 42 miles on it at the time of the accident.

    My Theory on cause of crash: Immediately after the crash I noticed that my front wheel was locked up, but at the time I assumed it was a result of brake damage from the accident; however, no damage to front brakes when I re-inspected it today.

    As I was truing the front wheel I noticed that the wheel was dished to the right side of the bike and I also noticed that the spokes on the right side were much tighter than the left spokes. Therefore, I believe that the front wheel slightly taco’ed and this was exacerbated by previously having my front brakes adjusted in such a way to require very little movement to apply a breaking force.

    The bike showed absolutely no permanent damage anywhere, not even the slightest of chipped paint; all damage was to non-bike components: Mirror, bar-ends and me.

    I believe most damage was avoided due to my panniers as I'm primarily a bike commuter.

    I can't really explain the feeling of pedal lockup and pressure on my big toe, like I said before, maybe I'm starting to manufacture memories of the sequence of events. All I can say is that I was going ~20 mph and the speed at which I was catapulted from the bike was much like that of a front wheel locking up; it was such quick all-of-a-sudden event.
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  18. #18
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    I just got back from a 21-mile test ride -- got up to a max of 36 mph going down the bridge of the intracoastal waterway; no problems.

    I was surprised at how comfortable I felt riding the bike, but I admit there were a couple times I had images of my front wheel taco'in, especially when I was going down hill, but those thoughts weren't enough to make me slow down

    Thanks for everyone's assistance.
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  19. #19
    Member
    Join Date
    Aug 2014
    Location
    Somewhere in Indiana..
    My Bikes
    Late 80's Miyata 512, 2014 Giant Escape 3
    Posts
    40
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I maybe showing my ignorance, but I'll throw out my crazy theory (no alien abductions or government cover ups though). Couple of quick questions: were you, or had you recently shifted gears? I made the mistake one time of momentarily cross-chaining a bike and it immediately threw the chain and locked up the pedals (remarkably I didn't crash, but almost hurt "myself" on the top tube). It sounds as if you ride with clipless pedals, but what kind of shoes are your cleats attached to? Do they have laces like some mountain bike shoes? Perhaps a shoe lace was momentarily snagged on something causing the sensation and subsequent crash that your describing.
    Otherwise, don't feel bad, I had a crash about 3 weeks ago that baffled me as well. 2 days later I returned to the mup and discovered a small branch that protrude at just the right height about 8 inches onto the path and I assume it snagged the derailer and caused the subsequent crash.
    "I ride just like Eddy Merckx: only not as fast, or as far."- My friend John

  20. #20
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    No I wasn't shifting gears, I was actually standing up and doing a small acceleration, because the red light (up ahead) had turned green; I was totally focused on the traffic at the time, because it was so heavy. It's an absolute miracle I didn't land on a car or get ran over, something in me automatically took over and I (without thought) jumped up, grabbed my bike and jumped off the road.

    I've locked up my gears also while shifting -- I know that feeling --, but like I said I wasn't shifting I was actually standing up. I do have SPD and they are laced with a velcro strap at top that covers the knot. Kind of like this model BONTRAGER SSR MULTISPORT SPD SHOES « Handsome Bicycles

    They were still secured.
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  21. #21
    Member
    Join Date
    Aug 2014
    Location
    Somewhere in Indiana..
    My Bikes
    Late 80's Miyata 512, 2014 Giant Escape 3
    Posts
    40
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    No clue then, those were just shots in the dark. It's unnerving to have something like that happen without explanation. You always wonder in the back of your mind if it is going to happen again..
    "I ride just like Eddy Merckx: only not as fast, or as far."- My friend John

  22. #22
    Senior Member
    Join Date
    Jun 2006
    Location
    Arkansas, Land of Opportunity
    My Bikes
    1984 Trek 620, Fisher Y-bike, Bike Friday NWT, Rans Rocket, Cinderella Cycles Model 1, Dahon Mariner & Boardwalk, Bike Friday tikit, 1977(?) Raliegh DL-1, Disc Trucker
    Posts
    69
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My pedal's bearings siezed once, and the first thing I felt with that was pressure on the top of my foot as the clipped-in shoe tried to rotate with the crank. But you probably would've noticed that later, unless somehow that broken strap was caught in the pedal.

  23. #23
    Senior Member work4bike's Avatar
    Join Date
    Jan 2006
    Location
    Atlantic Beach Florida
    Posts
    637
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Well, I've pretty much healed up, but I've noticed that my scars on my elbow and knee are still sensitive, but luckily it's just the flesh, not sensitive bone/connective tissue.

    However, the scar on my knee itches a lot, so today as I was scratching it, I took a close look at it and noticed that there seems to be a depression, which I can actually feel and see when I compare it to the same location on my other knee.

    Makes me wonder...How much meat did I leave in the road If I were to get it back, would it be a bite-size chunk of flesh
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

    -- Paul Dirac

  24. #24
    Senior Member
    Join Date
    May 2014
    Location
    Vught, The Netherlands
    My Bikes
    Van Nicholas - Rohloff hub, Gates carbon fiber belt; Brompton - 5 speed Sturmey-Archer
    Posts
    323
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GamblerGORD53 View Post
    What's with the broken strap pics? It got caught in your wheel? That would explain everything.
    That was my thought as well.

  25. #25
    Not racing. stanman13's Avatar
    Join Date
    Apr 2013
    Location
    SE Michigan
    My Bikes
    Couple old Schwinns, a Raleigh, a Univega, Giant... there's even an old Huffy in there.
    Posts
    93
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I wonder if you may have a defective bearing in the pedal which caused it to momentarily seize and force your foot to rotate. Disposable mentioned this theory above. That would explain the strange pressure on your toe. I've seen problematic bearings that would cause problems only when they were in a certain specific position and would behave normally at all other times.
    If they're Japanese components, it's not a gruppo. It's a gurūpu.

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
  •