Advertise on Bikeforums.net



User Tag List

Results 1 to 20 of 20
  1. #1
    Senior Member
    Join Date
    Feb 2008
    Location
    El Cerrito, California
    Posts
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Question about cogs/chains.

    Probably asked before (for fixed):
    If I change my 48/16 setup to a 48/19 setup will I need a new chain?
    Tired of lame track setup cause I have hills, and I'd like to ride up them.
    Anyone feel a difference when they switch out their cog for a lower gear?
    And it is true that unless you race track, you really don't NEED an even numbered cog? (14, 16, 18)
    Thanks for understanding my n00bey-ness.

  2. #2
    god Judge_Posner's Avatar
    Join Date
    Nov 2007
    Location
    SFC
    My Bikes
    cannondale f300, surly steamroller
    Posts
    411
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    nah you wont need a new chain, but just make sure your seatpost is compatible with your new cog.

  3. #3
    Team Beer Cynikal's Avatar
    Join Date
    Apr 2004
    Location
    Sacramento CA
    My Bikes
    Too Many
    Posts
    5,787
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I would assume you need a new chain because you current one might not be long enough. And about the gearing, you will notice a huge difference.

    I have no idea what you mean about the even numbered cogs. If you are talking about skid patches then maybe. If you have a brake and use it then don't waste your time thinking about it.
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  4. #4
    ?que? Live2Die's Avatar
    Join Date
    Jul 2007
    Location
    Portland Oregon
    Posts
    783
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Chain will be fine but like said before your seatpost is probably going to be swapped out. and I'd check your headset now too, new cogs can really eff up seatposts and headsets if you don't make sure they are compatible.

  5. #5
    superpredictable
    Join Date
    Nov 2007
    Location
    Madison, WI
    Posts
    193
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    48/19 is pretty low. I would try 48/18, or 42/16 - then you'll just be removing some links rather than buying a whole new chain.

  6. #6
    Senior Member
    Join Date
    Mar 2008
    Posts
    79
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i use a 42/17 and basically all i ride is hills.



    you've definitely gotta stand up and pump when the going gets steep, but it's pretty alright.

  7. #7
    Banned.
    Join Date
    Mar 2008
    Location
    tucson
    Posts
    271
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    42/16 is a good ratio if you're running into a lot of hills

  8. #8
    Senior Member MrCjolsen's Avatar
    Join Date
    Nov 2004
    Location
    Davis CA
    My Bikes
    Surly Cross-Check, '85 Giant road bike (unrecogizable fixed-gear conversion
    Posts
    3,954
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you switch to a 19t cog, you will very likely need a new chain unless it's one you installed and you still have the old links, or your dropouts are super long.

    Now if you went and got a smaller chainring instead, it might be cheaper than buying a cog and a chain. And for that, 42/16 is a pretty good ratio.

  9. #9
    ALL PARTY ryansexton's Avatar
    Join Date
    Dec 2007
    Location
    Niagara Falls, Ontario, Canada
    My Bikes
    Douglas Touring Cross Wise, Urbanite Fixed Gear
    Posts
    664
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My general knowledge - Cogs and chains are supposed to be changed at the same time, because you put wear in the chain, and you put wear in the cogs, and they fit to form eachother. If you change the cog, the chain will be wearing down the cog very fast, or will just not function as well.

    Spend the 11-25 dollars and get a new chain. I think a new lock-ring too.
    Quote Originally Posted by crushkilldstroy View Post
    This is SSFG. Nothing is logical here.

  10. #10
    Senior Member maddyfish's Avatar
    Join Date
    Jul 2006
    Location
    Ky. and FL.
    My Bikes
    KHS steel SS
    Posts
    3,945
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Maybe some of these people haven't been to Hawaii, but I'm suprised you can ride a 48-16 at all there.
    48-19 might be a start, you will notice the difference immediately, and don't be closed minded to 48-22 or 22 either.
    Not too much to say here

  11. #11
    Tell them I hate them Peedtm's Avatar
    Join Date
    Oct 2006
    Location
    Boise, ID
    My Bikes
    Specialized Allez Epic '91, IRO Mark V Pro, Schwinn Traveler
    Posts
    939
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ryansexton View Post
    My general knowledge - Cogs and chains are supposed to be changed at the same time, because you put wear in the chain, and you put wear in the cogs, and they fit to form eachother. If you change the cog, the chain will be wearing down the cog very fast, or will just not function as well.

    Spend the 11-25 dollars and get a new chain. I think a new lock-ring too.
    If you replace your chain frequently enough, it won't stretch enough to mis-shape the rings and cogs. Listen to your lbs, they're not upselling you.
    If you want to know about Tarck Bikes, PM me.
    [SIGPIC][/SIGPIC]

  12. #12
    Senior Member
    Join Date
    Feb 2008
    Location
    El Cerrito, California
    Posts
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Oh, I no longer live in Honolulu.
    Okay, so getting a new chainring would be a better idea?
    My LBS doesn't help me too much...one of them is cool, but the rest of them are mountain bike ******s.
    Let's see...my dropouts are pretty long (horizontal) but yes, I'm probably going to get a new chain with the cog, I'd prefer to get a new cog/lockring than a new chainring.
    Oh yes, and the main reason I want to make this change isn't just for hills it's for the fact that I've gone through 4 rear tires in the last two months due to the 48/16's one skid patch, and I'd like to avoid this problem by changing the gearing.

    Thanks for all the advice.

  13. #13
    ALL PARTY ryansexton's Avatar
    Join Date
    Dec 2007
    Location
    Niagara Falls, Ontario, Canada
    My Bikes
    Douglas Touring Cross Wise, Urbanite Fixed Gear
    Posts
    664
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Peedtm View Post
    If you replace your chain frequently enough, it won't stretch enough to mis-shape the rings and cogs. Listen to your lbs, they're not upselling you.
    This may be true, but it also works as a backing point for me. The dude should just get a new chain anyways. 12-20 dollars isn't really a big deal unless he is on track bike welfare.
    Quote Originally Posted by crushkilldstroy View Post
    This is SSFG. Nothing is logical here.

  14. #14
    Team Beer Cynikal's Avatar
    Join Date
    Apr 2004
    Location
    Sacramento CA
    My Bikes
    Too Many
    Posts
    5,787
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Then get a 17 tooth cog and a smaller chainring.
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  15. #15
    Senior Member pyroguy_3's Avatar
    Join Date
    Oct 2005
    Location
    Blo-no, IL
    My Bikes
    2005 Specialized Hardrock Sport, 1970's Miyata Liberty ala fixed gear
    Posts
    557
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by chore4n View Post
    Oh, I no longer live in Honolulu.
    Okay, so getting a new chainring would be a better idea?
    My LBS doesn't help me too much...one of them is cool, but the rest of them are mountain bike ******s.
    Ouch, that hurts me . I really hope you mean " are ******s" instead. My lbs guys ride mountain bikes primarily I think. They were pretty excited to see the finished product assembled from the parts I bought from them.

    On an on-topic note: I saw a couple references to putting links back into your chain. While it is possible to get this right, it is also possible to get the pin too far to one side, which can lead to some real fun chain failures. On my old mountain bike the chain didn't have a master-link, so after breaking it to do some sort of something (i don't remember what it was) I put it back on. About two hours into my ride met face to face with the ground because my chain exploded. Goooood times. So, just buy a new chain. Cheap ones for under 10$ and if you keep them maintained they can last a pretty long time. Good luck.
    Erwin Schroedinger will kill you like a cat in a box. Maybe.

  16. #16
    mauve avenger cheeva's Avatar
    Join Date
    Apr 2008
    Location
    San Rafael, CA
    Posts
    101
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Judge_Posner View Post
    nah you wont need a new chain, but just make sure your seatpost is compatible with your new cog.
    "Unfortunately, prohibitively expensive bicycles don't just come up to you and place themselves between your legs like friendly dogs or people with low self-esteem. You've got to purchase them with money--like pedigree dogs or people with low self-esteem who have turned to prostitution."

  17. #17
    Senior Member
    Join Date
    Feb 2008
    Location
    El Cerrito, California
    Posts
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So a new lockring would be needed too?
    I currently have an aluminum cog and lockring, that's the main reason why I need this change, I know aluminum will not last, judging on how I ride.
    I do not have a front brake, that's the reason for this gearing change, to add skid patches, and avoid the one skid patch with the 48/16 gearing.

  18. #18
    %#&*#%>?% Build your own's Avatar
    Join Date
    Feb 2008
    Location
    Mass
    My Bikes
    Pake,Shogun,Nishiki,Motobecane
    Posts
    845
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Get a dura ace lockring.

  19. #19
    Tell them I hate them Peedtm's Avatar
    Join Date
    Oct 2006
    Location
    Boise, ID
    My Bikes
    Specialized Allez Epic '91, IRO Mark V Pro, Schwinn Traveler
    Posts
    939
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by pyroguy_3 View Post
    Ouch, that hurts me . I really hope you mean " are ******s" instead. My lbs guys ride mountain bikes primarily I think. They were pretty excited to see the finished product assembled from the parts I bought from them.

    On an on-topic note: I saw a couple references to putting links back into your chain. While it is possible to get this right, it is also possible to get the pin too far to one side, which can lead to some real fun chain failures. On my old mountain bike the chain didn't have a master-link, so after breaking it to do some sort of something (i don't remember what it was) I put it back on. About two hours into my ride met face to face with the ground because my chain exploded. Goooood times. So, just buy a new chain. Cheap ones for under 10$ and if you keep them maintained they can last a pretty long time. Good luck.
    I effing hate master links and exclude them. I just use a chain breaker. Though I don't mtn bike, I do ride like a major jack-ass and I've yet to break a chain. Just make sure to look at it and see that the pin shows on each side equally.
    If you want to know about Tarck Bikes, PM me.
    [SIGPIC][/SIGPIC]

  20. #20
    Senior Member
    Join Date
    Mar 2007
    Location
    NYC
    Posts
    99
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Live2Die View Post
    Chain will be fine but like said before your seatpost is probably going to be swapped out. and I'd check your headset now too, new cogs can really eff up seatposts and headsets if you don't make sure they are compatible.
    yeah, but the problem is a new seatpost and headset can lead to problems with your handlebars. you could also get a new set of bars to work out these issues, but swapping out so many parts can get expensive

    id recommend just buying a kilo tt, or if you want, a 650 front wheel will eliminate the bar/seatpost/headset/cog incawmpedibillitie with your tarkbike.

    but maybe get some breaks? you might brake your face or something without them.

Posting Permissions

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