Page 1 of 6 1 2 3 4 5 ... LastLast
Results 1 to 25 of 139
  1. #1
    swag ho Administrator
    Reputation: francois's Avatar
    Join Date
    Aug 1996
    Posts
    18,233

    Calf meet chainring.

    Do you have the 3rd (aka big) chainring on your bike? Do you use it? Has it caused you great bodily injury? Do you plan to keep it?

    Or have you removed it? Do you miss it or is it better?

    I worked on a couple bikes today and will post them tomorrow. But meanwhile, here's a montage. I'm missing Ziscwig's shredded calf from a little Demo tumble.

    fc
    Attached Thumbnails Attached Thumbnails Calf meet chainring.-calf.jpg  

    Attached Images Attached Images    

  2. #2
    rho
    rho is online now
    Captain Pinchflat
    Reputation: rho's Avatar
    Join Date
    Dec 2007
    Posts
    1,603
    My bashguard saved me from one of those today!

    And then I promptly missed having a big chain ring when I got back to the 10miles of pavement to get home.

  3. #3
    newie
    Reputation:
    Join Date
    Jan 2009
    Posts
    191
    i've got a scar from a big ring, theres 6 or 7 teeth marks, i consider it a badge of honor

  4. #4
    Dirt Deviant
    Reputation: savagemann's Avatar
    Join Date
    Jan 2008
    Posts
    3,694
    I can spin pretty good, so I don't miss it.
    If I still had the large ring in place in downieville last weekend when I crashed on butchers ranch, it would not have been pretty.
    Getting tangled in a bike is not a good thing......especially with a large ring. Hot rotors are bad enough.
    I had a bad crash about 4 years ago and the bike scorpioned up into the air above me, I stepped back, and I reached out and caught it with my left arm as I didn't want the bike to hit the ground. Took a chainring in my bicept. There is not much of a scar, but it was bad at the time.
    Here is a pic that isn't too bad. The back of my ankle.
    Attached Thumbnails Attached Thumbnails Calf meet chainring.-snc00261.jpg  

    Look, whatever happens, don't fight the mountain.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    188
    I run on the big ring on all downhills. Having the chain on the teeth helps reduce the carnage.

  6. #6
    Air Pirate
    Reputation: Bokchoicowboy's Avatar
    Join Date
    Aug 2007
    Posts
    967
    My daughter got one of those "Chunk out of leg due to chainring" injuries riding her first mountain bike, a Speccie Hotrock 24", down the driveway at home. Her leg looked a lot like the first pic Francois posted. Don't know how she crashed, but she is a constant gravity test as it is. Anyway, since it healed she always is showing off her "mountain bike scar" to all the other kids, telling them that they arent real bikers until they sport one of those.

  7. #7
    Feeling a little taller
    Reputation: Dan'ger's Avatar
    Join Date
    Aug 2004
    Posts
    6,697
    I just changed the big ring on my wife's bike to a bash guard. She would get rookie marks every ride and she's not fast enough to need the big ring anyway.
    There are no stupid questions but there are A LOT of inquisitive idiots.


    Bicycle Trails Council of the East Bay

  8. #8
    swag ho Administrator
    Reputation: francois's Avatar
    Join Date
    Aug 1996
    Posts
    18,233
    Quote Originally Posted by savagemann
    I can spin pretty good, so I don't miss it.
    ....
    I had a bad crash about 4 years ago and the bike scorpioned up into the air above me, I stepped back, and I reached out and caught it with my left arm as I didn't want the bike to hit the ground. Took a chainring in my bicept.
    ...

    I think most people will not miss it. I think it is one of the worst inventions ever and Rensho and I will go on a crusade to eradicate it.

    'the bike scorpioned up'
    Awesome visual savagemann!!!! When that happens, it is time to run!

    fc

  9. #9
    swag ho Administrator
    Reputation: francois's Avatar
    Join Date
    Aug 1996
    Posts
    18,233
    Quote Originally Posted by Bokchoicowboy
    My daughter got one of those "Chunk out of leg due to chainring" injuries riding her first mountain bike, a Speccie Hotrock 24", down the driveway at home. Her leg looked a lot like the first pic Francois posted. Don't know how she crashed, but she is a constant gravity test as it is. Anyway, since it healed she always is showing off her "mountain bike scar" to all the other kids, telling them that they arent real bikers until they sport one of those.

    That's the thing man, you don't even have to crash. You can just have an unstable dismount and all hell can break loose. I think the calf doesn't have a ton of nerves so it don't hurt that much. The ankle on the other hand...

    fc

  10. #10
    mtbr member
    Reputation: jibmaster's Avatar
    Join Date
    Sep 2006
    Posts
    778
    Man, you people really suck. The big ring is all I use. Never had any problems.

  11. #11
    swag ho Administrator
    Reputation: francois's Avatar
    Join Date
    Aug 1996
    Posts
    18,233
    Here's the project yesterday. It was installing a Shimano guide on an SLX crank.

    To do it even better, change the middle ring from a 34 tooth to a 36 tooth or 38.

    To save weight use a Salsa chainring guard that is way lighter if you're not going to be bashing the guard on rocks.

    fc
    Attached Thumbnails Attached Thumbnails Calf meet chainring.-dsc_0001.jpg  

    Calf meet chainring.-dsc_0002.jpg  

    Calf meet chainring.-dsc_0007.jpg  

    Calf meet chainring.-dsc_0012.jpg  

    Calf meet chainring.-dsc_0025.jpg  


  12. #12
    It's the axle
    Reputation: Gregg K's Avatar
    Join Date
    Jan 2004
    Posts
    1,587
    What the...

    Total news to me. And that is some nasty result right there.

    Well, on the other hand, I'll admit that when I was a kid I welded up a tall unicycle. I still have sprocket marks on my shin from when the chain came off, and I came down from my perch.
    Note to self: 85% of FTP for 20 min.

  13. #13
    mtbr member
    Reputation:
    Join Date
    Aug 2008
    Posts
    3,438
    I still have my scar from last year. Looks a bit like the 3rd pic in the OP.

  14. #14
    Like a boss.
    Reputation: Piranha426's Avatar
    Join Date
    Aug 2008
    Posts
    655
    I never use my big ring except during fire road downhills at Sea Otter and Lemurian, so for most of the year I keep it off and put on a bash guard instead. This has made my lower extremities MUCH happier. My upper extremities, too - I once got stabbed in the arm by the big chainring when I fell trying to get my bike on top of my car (I'm exceptionally short).

    f u, big chainring.
    Quote Originally Posted by jbt56
    Are you a whiny Marin liberal, or a hand-wringing Berkeley liberal?

  15. #15
    mtbr member
    Reputation: nachomc's Avatar
    Join Date
    Apr 2006
    Posts
    6,523
    My chainring dug in to my tibia in 2007, pinning my leg in place as my body rolled and broke my tib/fib. I kept it on the bike, but moved to a single speed last year and am making the Epic a 1x9 now.
    :wq

  16. #16
    mtbr member
    Reputation: Broccoli's Avatar
    Join Date
    Jun 2008
    Posts
    5,769
    Putting on a BBG bashguard or another bash is the first thing I do to all cranks - especially if I plan to use them with platform pedals. That said, I currently have a big ring on my training and one other hardtail. Plan to switch them to 1x10 with a lightweight chain guide.

    Safety, ground clearance, lower weight, shorter chain and der. cage for better shifting and less chain slap. There is no need for a large ring, especially with modern wide range cassettes. Leave it for the roadies.

  17. #17
    old part timer
    Reputation: dabioman's Avatar
    Join Date
    Jan 2005
    Posts
    137

    Wink

    Since the move to bigger wheels several years ago the big ring did not get much use. It eventually was removed and replaced with a bashguard. No need for it since I can spin the 11 out and there are never any podium girls on my rides anyway.

  18. #18
    mtbr member
    Reputation: jeffh's Avatar
    Join Date
    Jun 2006
    Posts
    1,305
    This is my right shin after meeting a 44t Shimano chain ring at 2010 Napa Valley Dirt Classic, Quote from the EMT after the race, " I can see the bone "
    Attached Thumbnails Attached Thumbnails Calf meet chainring.-img_1451.jpg  


  19. #19
    dude with orange car
    Reputation: Plim's Avatar
    Join Date
    Dec 2004
    Posts
    2,588
    Yuck! Seeing pictures like those was one of the reasons I got rid of the big ring a couple years back.
    This is no time for levity. - Oliver Hardy

  20. #20
    iheartMTNs
    Reputation: eraSSerhead's Avatar
    Join Date
    Dec 2004
    Posts
    139
    On my geared bike (purchased several years ago) the big ring was removed and replaced with an ethirteen bash guard and the 32/22 rings were replaced by 34/24 rings before bringing it home from the shop.
    "EPO can turn donkeys into horses!" function

  21. #21
    jms
    jms is offline
    mtbr member
    Reputation: jms's Avatar
    Join Date
    Feb 2006
    Posts
    2,565

    Combo pack.

    Oh for the love of......

    Yaah, I use the big ring, used it yesterday on the way into Wanoga during the HC 100, and at the start to heading the first singletrack section and...

    Oh C'mon FC! Maybe you guy's can do some kind of MTBR ring guard, spoke guard, pedal reflector shoot combination-shootout-comparison test.

    And just to add fuel to this, what do you propose to with the new 2x drivetrains? Are you proposing to remove the outer ring on these too?

    Sigh, this board gets "smaller" every day.

  22. #22
    mtbr member
    Reputation: Broccoli's Avatar
    Join Date
    Jun 2008
    Posts
    5,769
    Quote Originally Posted by jms
    And just to add fuel to this, what do you propose to with the new 2x drivetrains? Are you proposing to remove the outer ring on these too?
    I propose the same thing as I do with current 2x drivetrains - buy a triple and add a bashguard. 24 - 36 is good for anything. It works - why change it?

  23. #23
    Obi
    Obi is offline
    mtbr member
    Reputation: Obi's Avatar
    Join Date
    Oct 2005
    Posts
    3,189
    FC, what's with the spider's web and home in the cross pipe in those pix? Maybe the bikes want revenge for lack of use?

    *Most of the guys around here have seen both my shins and calfs.. what wasn't caused by chainring has been done by eggbeaters and flat pedals. It's a part of the game, a price you pay for the pleasure, sort of like the Ti-hardware upgrades and scar to my left shoulder.

    Like I always say "Singlespeed..DUH!!"

    ..besides, consider the scars to be armor, only thing is if you hit it again, it tears off the entire patch instead of a slight cut.
    Last edited by Obi; 08-08-2010 at 03:32 PM.
    You have given out too much Positive Reputation in the last 24 hours, try again later.
    Awesome!

  24. #24
    swag ho Administrator
    Reputation: francois's Avatar
    Join Date
    Aug 1996
    Posts
    18,233
    some of the home projects... No big ring will be left unturned. Road bikes even?

    fc
    Attached Thumbnails Attached Thumbnails Calf meet chainring.-cimg0850.jpg  

    Calf meet chainring.-cimg0861.jpg  

    Calf meet chainring.-dsc_0020.jpg  


  25. #25
    Obi
    Obi is offline
    mtbr member
    Reputation: Obi's Avatar
    Join Date
    Oct 2005
    Posts
    3,189
    Quote Originally Posted by jeffh
    This is my right shin after meeting a 44t Shimano chain ring at 2010 Napa Valley Dirt Classic, Quote from the EMT after the race, " I can see the bone "
    That's what I'm talking about, you're not keeping it real until the bone shows!

    With the texture and makeup of the skin on the shin it honestly doesn't take much to gut someone there. Luckily it looks like you were stable with little blood loss and likely had the antibiotics for follow up..how many staples, 13? IIRC mine was around that #.

    Quote Originally Posted by Francois
    some of the home projects... No big ring will be left unturned.
    Hmmm, now I'm thinking more and more about milling down a XTR spider to fit on my ChrisKing-SS hubs. After seeing how well Jeff's worked for his Ti bikes I figure I can see how bad it would be on the Surly 1x1..

    Now all I'd need to do is also mill the drive-side BB or go convince Brent or Bernie to tig on some ISCG mounts for a front Guide, or make a call out to Paul Components for the guide.

    *What then? ObiFiveSpeedOnly?
    Last edited by Obi; 08-08-2010 at 03:45 PM.
    You have given out too much Positive Reputation in the last 24 hours, try again later.
    Awesome!

Page 1 of 6 1 2 3 4 5 ... 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
  •