Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 32
  1. #1
    Member
    Join Date
    Jun 2008
    Posts
    45
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    What does more teeth mean??

    On a singlespeed bike, i am looking for a cog but i havent decided how many teeth i want on it...what does it mean to have less or more teeth of your cog??

  2. #2
    Ths Hipstr Kills Masheenz cc700's Avatar
    Join Date
    Oct 2006
    Location
    seattle
    My Bikes
    tirove
    Posts
    8,543
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    it means it's harder to pedal the more you have, but the higher your top speed is per RPM and the slower your acceleration is.

  3. #3
    Nymphomaniactionhero RichPugh's Avatar
    Join Date
    Nov 2007
    Location
    Baltimore, MD
    My Bikes
    07' Specialized Langster Comp, 04' Bianchi Pista Concept
    Posts
    496
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The lower the number of teeth on a rear cog, the more development inches you create (the distance you can move your bike with each rotation of the crank) but it yields higher top speeds pedaling at the same RPM.

    Say your chainring is a 48 tooth and you have an 18 tooth rear cog (and youre running a typical 700x23 wheel/tire combo). One full rotation of the crank will move your bike 220 development inches and at 100rpm, you'd be going 20.8 mph.

    If you stayed with that same 48 tooth chainring but dropped down to a 16 tooth rear cog, you would have 248 inches of movement with the same single rotation of the crank/pedals and at 100rpm, your speed would be 23.5 mph.

    A good way to decide the number of teeth you WANT on a rear cog, depends on what size your chainring is. It also matters if youre in a predominantly hilly area or flat area or if you ride fast or casually slower. You create a "Gear Ratio" when you pair a chainring with a cog and that ratio is extremely particular to the individual. I run a 49x16 in a mildy hilly but predominantly flat area of Baltimore City with no brakes. Sucks on the hills but great for riding across the harbor area of town where its flat
    Last edited by RichPugh; 06-29-08 at 10:54 PM.

  4. #4
    NoGoSlow HelluvaStella's Avatar
    Join Date
    Dec 2004
    Location
    Philly
    My Bikes
    Stella fixy conversion, Trek 2300, Specialized Rock Hopper, Schwinn Collegiate 3, Mz Skorpion
    Posts
    862
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    more teeth = crowded mouth
    Quote Originally Posted by crushkilldstroy View Post
    I'm Irish. I'd get in a fight over a lukewarm coffee or an untied shoe.

  5. #5
    Senior Member bornagainst's Avatar
    Join Date
    Oct 2006
    Location
    Minneapolis!
    My Bikes
    2005 Surly Steamroller, 2003 Surly Pacer, 2009 Surly LHT, 2010 Surly LHT, 2007 Surly CrossCheck, 1988 Schwinn Prologue
    Posts
    189
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by solecal123 View Post
    On a singlespeed bike, i am looking for a cog but i havent decided how many teeth i want on it...what does it mean to have less or more teeth of your cog??
    Quote Originally Posted by cc700 View Post
    it means it's harder to pedal the more you have, but the higher your top speed is per RPM and the slower your acceleration is.
    Do you even ride a bike cc700?
    [SIGPIC][/SIGPIC]
    Quote Originally Posted by Catnap View Post
    maybe you sharted when you were straining to clear that last hill...

  6. #6
    Boooga BOO
    Join Date
    Jan 2005
    Location
    Down Under
    My Bikes
    Colnago for road, Fuji for track
    Posts
    243
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    the better to eat you with my pretty..no wait that's why they bigger

  7. #7
    jpdesjar
    Guest
    more teeth=more bite marks

  8. #8
    harrospokes! fetch's Avatar
    Join Date
    Jan 2007
    Posts
    1,263
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    less teeth in your smile more street credit!

    Charming Jawbone of the Messenger

    +2 Agility
    +1 Strength
    -2 Intelligence
    -1 year to your story of "i started riding fixed in 19XX" for each tooth lost while "messing".
    +10 DEF points to your story of why you ride CMs.
    +10 to stealth detection

    Charming Jawbone of the Messenger
    Fleeted Footpads of the Quick
    Burly Gloves of Pestilence
    Grinding Tunic of Regeneration


    Complete Set Bonus:
    upon riding through downtown 5% chance to spit on Car, 1% to puke on Lexus.
    Aura: All bike riding within 10 yrds have increased awareness to danger (2% increased counter-attack)
    100% more gold found on Delivery's.
    +50 DEF. to Tire Punctures. 15% Chance on Delivery to meet hot girl on Kalavinka Tarck Bike.
    Chance on Strike to deal 15-28 poison DMG to enemies around you.
    +20% delivery Speed
    +50 Hipster Resistances
    Chance on Hit to deal 100 arrospok lighting inertia DMG

  9. #9
    i can has tarck?
    Join Date
    Feb 2007
    Location
    new orleans
    My Bikes
    '07 BFSSFGIRO / '84 Trek 770
    Posts
    499
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fetch View Post
    less teeth in your smile more street credit!

    Charming Jawbone of the Messenger

    +2 Agility
    +1 Strength
    -2 Intelligence
    -1 year to your story of "i started riding fixed in 19XX" for each tooth lost while "messing".
    +10 DEF points to your story of why you ride CMs.
    +10 to stealth detection

    Charming Jawbone of the Messenger
    Fleeted Footpads of the Quick
    Burly Gloves of Pestilence
    Grinding Tunic of Regeneration


    Complete Set Bonus:
    upon riding through downtown 5% chance to spit on Car, 1% to puke on Lexus.
    Aura: All bike riding within 10 yrds have increased awareness to danger (2% increased counter-attack)
    100% more gold found on Delivery's.
    +50 DEF. to Tire Punctures. 15% Chance on Delivery to meet hot girl on Kalavinka Tarck Bike.
    Chance on Strike to deal 15-28 poison DMG to enemies around you.
    +20% delivery Speed
    +50 Hipster Resistances
    Chance on Hit to deal 100 arrospok lighting inertia DMG
    amazing.
    If you want to know about TARCK BIKES, pm me.

  10. #10
    we are one thirty eight truth138's Avatar
    Join Date
    Aug 2008
    Location
    Manhattan, NYC
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by solecal123 View Post
    On a singlespeed bike, i am looking for a cog but i havent decided how many teeth i want on it...what does it mean to have less or more teeth of your cog??

    It determines if your bike can eat bacon or not.

  11. #11
    Live without dead time
    Join Date
    Jun 2008
    Location
    Toronto
    Posts
    2,137
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fetch View Post
    less teeth in your smile more street credit!

    Charming Jawbone of the Messenger

    +2 Agility
    +1 Strength
    -2 Intelligence
    -1 year to your story of "i started riding fixed in 19XX" for each tooth lost while "messing".
    +10 DEF points to your story of why you ride CMs.
    +10 to stealth detection

    Charming Jawbone of the Messenger
    Fleeted Footpads of the Quick
    Burly Gloves of Pestilence
    Grinding Tunic of Regeneration


    Complete Set Bonus:
    upon riding through downtown 5% chance to spit on Car, 1% to puke on Lexus.
    Aura: All bike riding within 10 yrds have increased awareness to danger (2% increased counter-attack)
    100% more gold found on Delivery's.
    +50 DEF. to Tire Punctures. 15% Chance on Delivery to meet hot girl on Kalavinka Tarck Bike.
    Chance on Strike to deal 15-28 poison DMG to enemies around you.
    +20% delivery Speed
    +50 Hipster Resistances
    Chance on Hit to deal 100 arrospok lighting inertia DMG
    Dude, amazing.

  12. #12
    No plan. peabodypride's Avatar
    Join Date
    May 2007
    Location
    PA
    Posts
    2,744
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Mo Teeth Mo Problemz

  13. #13
    On-On! Dr.PooLittle's Avatar
    Join Date
    Jan 2008
    Location
    Chicago, IL
    Posts
    181
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When choosing chainringz and cogz, don't forget skid patchezz!!!
    [SIGPIC][/SIGPIC]

  14. #14
    Senior Member ZiP0082's Avatar
    Join Date
    May 2008
    Location
    Brooklyn, NY
    My Bikes
    2008 Mercier Kilo TT
    Posts
    1,703
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    is there a barspinz calculator?

  15. #15
    Kea
    Kea is offline
    Member
    Join Date
    Jul 2008
    Location
    Montreal Qc,
    My Bikes
    Old Spec Allez epic that i custom a bit, Old Velo Sport all custom and Rocky Mountain Switch sl 2004 for sale (like new):P
    Posts
    25
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fetch View Post
    less teeth in your smile more street credit!

    Charming Jawbone of the Messenger

    +2 Agility
    +1 Strength
    -2 Intelligence
    -1 year to your story of "i started riding fixed in 19XX" for each tooth lost while "messing".
    +10 DEF points to your story of why you ride CMs.
    +10 to stealth detection

    Charming Jawbone of the Messenger
    Fleeted Footpads of the Quick
    Burly Gloves of Pestilence
    Grinding Tunic of Regeneration


    Complete Set Bonus:
    upon riding through downtown 5% chance to spit on Car, 1% to puke on Lexus.
    Aura: All bike riding within 10 yrds have increased awareness to danger (2% increased counter-attack)
    100% more gold found on Delivery's.
    +50 DEF. to Tire Punctures. 15% Chance on Delivery to meet hot girl on Kalavinka Tarck Bike.
    Chance on Strike to deal 15-28 poison DMG to enemies around you.
    +20% delivery Speed
    +50 Hipster Resistances
    Chance on Hit to deal 100 arrospok lighting inertia DMG

  16. #16
    Senior Member
    Join Date
    Jul 2008
    Posts
    82
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HelluvaStella View Post
    more teeth = crowded mouth

  17. #17
    Ths Hipstr Kills Masheenz cc700's Avatar
    Join Date
    Oct 2006
    Location
    seattle
    My Bikes
    tirove
    Posts
    8,543
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bornagainst View Post
    Do you even ride a bike cc700?
    i thought he meant chainring. whatever.

  18. #18
    partly metal, partly real sp00ki's Avatar
    Join Date
    Aug 2005
    Location
    Philadelphia.
    My Bikes
    Hummer H2
    Posts
    3,597
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    the better to chew you with.
    Quote Originally Posted by bonechilling View Post
    Road [racing] is one of the only sports where adult men can compete in a non-scholastic setting, so inevitably 8/10 racers are fiercely-competitive nobodies. It's fun as hell, but it's also the foremost refuge of defeated and aging jocks, turned middle-management types.

  19. #19
    Junior Member
    Join Date
    Feb 2012
    Location
    California
    Posts
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by RichPugh View Post
    The lower the number of teeth on a rear cog, the more development inches you create (the distance you can move your bike with each rotation of the crank) but it yields higher top speeds pedaling at the same RPM.

    Say your chainring is a 48 tooth and you have an 18 tooth rear cog (and youre running a typical 700x23 wheel/tire combo). One full rotation of the crank will move your bike 220 development inches and at 100rpm, you'd be going 20.8 mph.

    If you stayed with that same 48 tooth chainring but dropped down to a 16 tooth rear cog, you would have 248 inches of movement with the same single rotation of the crank/pedals and at 100rpm, your speed would be 23.5 mph.

    A good way to decide the number of teeth you WANT on a rear cog, depends on what size your chainring is. It also matters if youre in a predominantly hilly area or flat area or if you ride fast or casually slower. You create a "Gear Ratio" when you pair a chainring with a cog and that ratio is extremely particular to the individual. I run a 49x16 in a mildy hilly but predominantly flat area of Baltimore City with no brakes. Sucks on the hills but great for riding across the harbor area of town where its flat
    After determining the number of teeth on both the chainring and the rear cog, how did you come up with those development inches?

    im at 49x17.....how can i determine if that is good for hilly or flat or somewhere in between?

    thanks.
    Last edited by phips; 04-16-13 at 01:04 PM.

  20. #20
    for dynamic hybrid logics prooftheory's Avatar
    Join Date
    Jul 2011
    Location
    Buffalo NY
    Posts
    2,204
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by phips View Post
    After determining the number of teeth on both the chainring and the rear cog, how did you come up with those development inches?

    im at 49x17.....how can i determine if that is good for hilly or flat or somewhere in between?

    thanks.
    Look here:
    http://www.bikeforums.net/showthread...imer-for-Newbs
    and here:
    http://www.sheldonbrown.com/gears/

  21. #21
    Cat 5 Mod Jandro's Avatar
    Join Date
    Oct 2010
    Location
    San Francisco, CA
    Posts
    3,059
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Less trolling, more answering his question.

    Teeth = the number of teeth on a chainring or rear cog. Also referred to the 'gear'. The greater the ratio between the number of teeth on the rear cog and the front chainring, the larger the overall gearing of the drivetrain. The larger the gearing of the drive train, the more effort you have to exert to turn the gear. The smaller the gear ratio, the easier it is to pedal.

    Thank you.
    Attack in the feeling because it says I'll win absolutely.

  22. #22
    Morton Nagrom_'s Avatar
    Join Date
    Dec 2011
    Location
    East Bay
    My Bikes
    Kilo TT, CAAD10
    Posts
    9,668
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jandro View Post
    Less trolling, more answering his question.

    Teeth = the number of teeth on a chainring or rear cog. Also referred to the 'gear'. The greater the ratio between the number of teeth on the rear cog and the front chainring, the larger the overall gearing of the drivetrain. The larger the gearing of the drive train, the more effort you have to exert to turn the gear. The smaller the gear ratio, the easier it is to pedal.



    Thank you.

    5 year old thread.
    Quote Originally Posted by seau grateau View Post
    No offense but you're an idiot.
    PedalRoom

  23. #23
    Junior Member
    Join Date
    Feb 2012
    Location
    California
    Posts
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Nagrom_ View Post
    5 year old thread.
    correct me if im wrong here but arent we supposed to search for old threads?
    isnt that what all you "veterans" tell new posters?.....

  24. #24
    Morton Nagrom_'s Avatar
    Join Date
    Dec 2011
    Location
    East Bay
    My Bikes
    Kilo TT, CAAD10
    Posts
    9,668
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by phips View Post
    correct me if im wrong here but arent we supposed to search for old threads?
    isnt that what all you "veterans" tell new posters?.....
    Absolutely. I'm glad you did.

    I'm pointing out that jandro is telling people to stop trolling... 5 years ago.
    Quote Originally Posted by seau grateau View Post
    No offense but you're an idiot.
    PedalRoom

  25. #25
    Senior Member
    Join Date
    Apr 2013
    Location
    North Attleboro, MA
    My Bikes
    Surly Steamroller
    Posts
    264
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'll shut up now.
    Last edited by OneGoodLeg; 04-16-13 at 03:16 PM. Reason: late post

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
  •