Advertise on Bikeforums.net



User Tag List

Results 1 to 12 of 12
  1. #1
    FalconLvr
    Join Date
    Jun 2006
    Location
    SW Virginia
    My Bikes
    62 Falcon, 58 Raleigh Lenton Gran Prix, 74 Raleigh Pro, 75 Raleigh Int, 75 Raleigh Comp, 76 Colnago Super, 75 Crescent, 80 Peugeot PX10, plus others too numerous to mention!
    Posts
    1,175
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    1/8" vrs 3/32" chains and freewheels

    OK, here is one I am ignorant on and would like some help from the knowledge guru's. What is the difference between 1/8" chain/sprocket setups a and 3/32"? I presume one is narrower than the other, does that mean they can not be mixed? Can you mix one way and not the other? I am currently looking at a freewheel that is marked as for 1/8", which is why the questions. Thanks for any enlightenment you guys can supply!

  2. #2
    Senior Member iab's Avatar
    Join Date
    Jun 2006
    Location
    NW Burbs, Chicago
    Posts
    7,092
    Mentioned
    18 Post(s)
    Tagged
    0 Thread(s)
    A 3/32" chain cannot be run on 1/8" freewheel or rings. A 1/8" chain will work on a 3/32" freewheel and rings, but it will be sloppy and wear the gears quicker. I would recommend matching things correctly. 3/32" is generally for the road and 1/8" is genearlly used for track (and bmx).

  3. #3
    surly old man jgedwa's Avatar
    Join Date
    Sep 2006
    Location
    Carlisle, PA
    My Bikes
    IRO Mark V, Karate Monkey half fat, Trek 620 IGH, Cannondale 26/24 MTB, Amp Research B3, and more.
    Posts
    3,291
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Hmmm. I have several bikes with 1/8 rear cogs and 1/8 chain, but 3/32 chainring. I have never noticed any sort of slop. I also rather doubt that there is any appreciable difference in wear rate.

    Fixed people have been mixing this way for a long time. Really does not seem like an issue at all. I suppose I would not go out of my way to set one up this way. (Why add a heavier chain if it is not needed?) But if you happen to have a mix of parts that you otherwise like, I would not hesitate one bit.

    jim

  4. #4
    Senior Member iab's Avatar
    Join Date
    Jun 2006
    Location
    NW Burbs, Chicago
    Posts
    7,092
    Mentioned
    18 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jgedwa
    Hmmm. I have several bikes with 1/8 rear cogs and 1/8 chain, but 3/32 chainring. I have never noticed any sort of slop. I also rather doubt that there is any appreciable difference in wear rate.
    My information is from what I read from somewhere - not too reliable - I have no experience with a 1/8" chain on a 3/32" chainring. I would go with your experience over my information.

  5. #5
    Senior Member
    Join Date
    Jun 2006
    Posts
    8,325
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    1/8" freewheels were from a time when common was also a fixed cog waiting on the other side of the hub to be switched to. a 3/32" chain will not work as stated, also, a 1/8" chain on a 3/32" freewheel will not work for the vast majority of freewheels, as the cogs are too close, unless is is a very wide range freewheel where the chain can offset into free space, closer ratios will have interference. Long ago we had a customer who almost made it work except for the 14/16 cogs, he added washers and longer fasteners to the jockey wheel cage too, resourceful, and would have saved the cost of a second (and third correct) chain and time if he came to us first.

  6. #6
    Senior Member
    Join Date
    Dec 2005
    Posts
    7,781
    Mentioned
    6 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by jgedwa
    Hmmm. I have several bikes with 1/8 rear cogs and 1/8 chain, but 3/32 chainring. I have never noticed any sort of slop. I also rather doubt that there is any appreciable difference in wear rate.
    jim
    I have found the issue to be in the other direction: running a 3/32 chain with 1/8 cogs. It's too narrow and is bound to cause trouble.

    Neal

  7. #7
    feros ferio John E's Avatar
    Join Date
    Jul 2000
    Location
    www.ci.encinitas.ca.us
    My Bikes
    1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
    Posts
    15,077
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    The only multispeed 1/8" cogsets I have seen were hybrid drive train adaptors for Sturmey Archer 3-speed epicyclic hubs, to give one 9 or 12 speeds. I used those with 1/8" chains and either 1/8" or 3/32" chainrings, which worked fine, as long as I had enough width in the rear derailleur cage. (Old Campagnolo Gran Sports, Cyclos, and Simplex TdFs worked fine.)
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
    Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
    Peugeot: 1970 UO-8, S/N 0010468
    Bianchi: 1981 Campione d'Italia, S/N 1.M9914
    Schwinn: 1988 Project KOM-10, S/N F804069

  8. #8
    Senior Member
    Join Date
    Dec 2005
    Posts
    7,781
    Mentioned
    6 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by John E
    The only multispeed 1/8" cogsets I have seen were hybrid drive train adaptors for Sturmey Archer 3-speed epicyclic hubs, to give one 9 or 12 speeds. I used those with 1/8" chains and either 1/8" or 3/32" chainrings, which worked fine, as long as I had enough width in the rear derailleur cage. (Old Campagnolo Gran Sports, Cyclos, and Simplex TdFs worked fine.)
    I have a four-speed block on my 1961 Raleigh Lenton Grand Prix, and it uses a 1/8" chain. But anything produced after the mid 60s would use a 3/32 chain, I'd imagine.

    Neal

  9. #9
    surly old man jgedwa's Avatar
    Join Date
    Sep 2006
    Location
    Carlisle, PA
    My Bikes
    IRO Mark V, Karate Monkey half fat, Trek 620 IGH, Cannondale 26/24 MTB, Amp Research B3, and more.
    Posts
    3,291
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by nlerner
    I have found the issue to be in the other direction: running a 3/32 chain with 1/8 cogs. It's too narrow and is bound to cause trouble.

    Neal
    This will not merely cause trouble, it simply will not work. At all. For even a second.

    ko,

  10. #10
    feros ferio John E's Avatar
    Join Date
    Jul 2000
    Location
    www.ci.encinitas.ca.us
    My Bikes
    1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
    Posts
    15,077
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by nlerner
    I have a four-speed block on my 1961 Raleigh Lenton Grand Prix, and it uses a 1/8" chain. But anything produced after the mid 60s would use a 3/32 chain, I'd imagine.

    Neal
    That's probably one of the very last 1/8" multicog freewheels. My 1962 Bianchi had a 5-speed Regina freewheel and a 3/32" Regina chain. Both Capos (1959 and 1960) came with 3/32" chains and cogsets, as well.
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
    Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
    Peugeot: 1970 UO-8, S/N 0010468
    Bianchi: 1981 Campione d'Italia, S/N 1.M9914
    Schwinn: 1988 Project KOM-10, S/N F804069

  11. #11
    FalconLvr
    Join Date
    Jun 2006
    Location
    SW Virginia
    My Bikes
    62 Falcon, 58 Raleigh Lenton Gran Prix, 74 Raleigh Pro, 75 Raleigh Int, 75 Raleigh Comp, 76 Colnago Super, 75 Crescent, 80 Peugeot PX10, plus others too numerous to mention!
    Posts
    1,175
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Actually the unit I was looking at acquiring is an old Cyclo 4 sp, which would agree with what nlerner has.

  12. #12
    Seņor Member USAZorro's Avatar
    Join Date
    Oct 2004
    Location
    Carlisle, PA
    My Bikes
    1954 Hetchins M.O., 1959 Viking Severn Valley, 1970 Raleigh Pro, 1972 Fuji "The Finest", 1974 Raleigh Superbe&Comp, 1976 Raleigh Team Pro, 1994 Trek 830 MTB, 2000 Bob Jackson Arrowhead, Unicycle
    Posts
    13,034
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    1/8" chains don't flex as well as 3/32". If you want to run a bunch of gears with a quiet drivetrain and not get flaky shifting, go with 3/32"
    The search for inner peace continues...

Posting Permissions

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