Advertise on Bikeforums.net



User Tag List

Results 1 to 22 of 22
  1. #1
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Singlespeed - Fixed Gear Hub. Help Please.

    I also posted this in the mechanics forum but perhaps you can help too...

    I recently received a 1979 Falcon. The frame is Reynolds 531 and is in relatively good condition. It was originally a 10 speed with a Campy Velox group.
    I want to rebuild it into a single speed/fixed gear with a flip flop hub but I don't seem to understand the part about hub sizing. I measured the rear drop outs and got 102 mm. Is this correct? That doesn't seem like an available size for fixed gear/single speed hubs.
    Can anyone help shed some light on this for me? I just want to make sure I am measuring it correctly before I order any parts.
    Pictures to follow...

    Thanks,

    Dante
    In life there are no mistakes, only lessons. -Shin

  2. #2
    Iguana Subsystem dolface's Avatar
    Join Date
    Nov 2004
    Location
    san francisco
    Posts
    4,016
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    are you measuring the distance between the dropouts? (from the left one to the right one).

    they're prolly gonna be 126mm...

  3. #3
    live free or die trying humancongereel's Avatar
    Join Date
    Oct 2005
    Location
    where i lay my head is home.
    My Bikes
    bianchi pista workhorse, cannondale r1000, mountain bike fixed conversion
    Posts
    6,999
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    102? that's a really funny measurement. you should (i think, i haven't had to worry about this ever) be measuring from the center of each of the dropouts.
    have:ea50 flats, black, light, stiff.
    144 bcd 3/32" 49t sugino track chainring, possibly 75.

    want: risers, light, stiff, 1", black if that can be
    144 bcd 46t or 47t chainring any kind or width

  4. #4
    likes avocadoes
    Join Date
    Nov 2004
    Location
    oakland, ca
    My Bikes
    heh, like that info would fit here...
    Posts
    1,125
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    weren't all of the campy (and most other) 5 speeds 120mm spacing?

  5. #5
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I think I may have found a clue. Do the chain stays look bent to you?



    Dante
    In life there are no mistakes, only lessons. -Shin

  6. #6
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Here's a few more pics...







    Dante
    In life there are no mistakes, only lessons. -Shin

  7. #7
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    the dropout sure looks bent.

    the spacing, as already mentioned, should be 120mm for a 5-speed
    {o,o**
    |)__)
    -"-"-

    O RLY?

  8. #8
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Any ideas on how to bend the stays back into position?

    Dante
    In life there are no mistakes, only lessons. -Shin

  9. #9
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    {o,o**
    |)__)
    -"-"-

    O RLY?

  10. #10
    live free or die trying humancongereel's Avatar
    Join Date
    Oct 2005
    Location
    where i lay my head is home.
    My Bikes
    bianchi pista workhorse, cannondale r1000, mountain bike fixed conversion
    Posts
    6,999
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    heh, beat me to it. cold setting a la the man himself--sheldon.

    invaluable site if you haven't used it before.
    have:ea50 flats, black, light, stiff.
    144 bcd 3/32" 49t sugino track chainring, possibly 75.

    want: risers, light, stiff, 1", black if that can be
    144 bcd 46t or 47t chainring any kind or width

  11. #11
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Gentlemen, I want to apologize. I checked it again and remeasured. This time I got 122 mm measuring the inside of the dropouts. I'm not sure what mistake I made before but thanks for the help.

    New question. Can you recommend a wheel assy with a flip flop, free/fixed hub in the 120mm size?

    Thanks.

    Dante

    P.S. Yes, Sheldon does have a great web site.
    In life there are no mistakes, only lessons. -Shin

  12. #12
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    120mm is standard track spacing. so, basically anything will work.
    IRO is the obvious answer

    PS: get fix/fix. you can thread a freewheel on the fix side, and have a backup if you ever strip your lockring.
    {o,o**
    |)__)
    -"-"-

    O RLY?

  13. #13
    coasterbrakelockup lz4005's Avatar
    Join Date
    Nov 2004
    Location
    parts unknown
    My Bikes
    surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
    Posts
    825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Would the bike having asymetrical stays prevent him from using a flip-flop?

  14. #14
    don't pedal backwards... MacG's Avatar
    Join Date
    Jul 2005
    Location
    Minneapolis
    My Bikes
    Surly Long Haul Trucker set up for commuting and loaded touring, old Sekine road frame converted to fixed-gear, various beaters and weird bikes, waiting on the frame for my Surly Big Dummy build
    Posts
    754
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    nope. the stays can be whatever and as long as the chainline works on one side, it will work on the other side as well since the hub is symmetrical.

    You can get a pretty decent basic wheelset for $130 with a fixed/free Formula hubset and Mavic CXP-22 rims. I got mine from Nashbar recently, but there is some other place selling them for about $130 (cheaper than NB's price for apparently the same wheels).

    You'll be hard pressed to find a common modern track hub that isn't 120mm, so your stay spacing should work just fine. I wouldn't even worry about the extra 2mm, as the steel will *easily* flex that far just as you tighten the axle nuts by hand.
    from Minneapolis, with bike love

  15. #15
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by MacG
    nope. the stays can be whatever and as long as the chainline works on one side, it will work on the other side as well since the hub is symmetrical.

    You can get a pretty decent basic wheelset for $130 with a fixed/free Formula hubset and Mavic CXP-22 rims. I got mine from Nashbar recently, but there is some other place selling them for about $130 (cheaper than NB's price for apparently the same wheels).

    You'll be hard pressed to find a common modern track hub that isn't 120mm, so your stay spacing should work just fine. I wouldn't even worry about the extra 2mm, as the steel will *easily* flex that far just as you tighten the axle nuts by hand.

    actually, no.
    if the stays are assymetrical (I'm assuming he's asking if the stays are offset to one side), then you have to respace the hub over the corresponding amount, and dish the wheel.
    then the flop side won't line up.
    {o,o**
    |)__)
    -"-"-

    O RLY?

  16. #16
    don't pedal backwards... MacG's Avatar
    Join Date
    Jul 2005
    Location
    Minneapolis
    My Bikes
    Surly Long Haul Trucker set up for commuting and loaded touring, old Sekine road frame converted to fixed-gear, various beaters and weird bikes, waiting on the frame for my Surly Big Dummy build
    Posts
    754
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    I was assuming you would make chainline corrections with the cranks and BB. Respacing and dishing a symmetrical flip flop is pretty pointless.
    from Minneapolis, with bike love

  17. #17
    coasterbrakelockup lz4005's Avatar
    Join Date
    Nov 2004
    Location
    parts unknown
    My Bikes
    surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
    Posts
    825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by baxtefer
    if the stays are assymetrical (I'm assuming he's asking if the stays are offset to one side), then you have to respace the hub over the corresponding amount, and dish the wheel.
    then the flop side won't line up.
    Thats what I thought. From the first picture Dante posted, it looks like his stays aren't symetrical from the centerline of the frame, so a flipflop won't work. Unless the picture is taken at an odd angle or something.

  18. #18
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by MacG
    I was assuming you would make chainline corrections with the cranks and BB. Respacing and dishing a symmetrical flip flop is pretty pointless.
    ahh yes that too, but you can only do that if it's assymetrical in one direction.
    In any case, it's a moot point. if the stays are out of alignment the bike will ride like shiat regardless of chainline.
    {o,o**
    |)__)
    -"-"-

    O RLY?

  19. #19
    Senior Member DiegoFrogs's Avatar
    Join Date
    Feb 2005
    Location
    Lund, Sweden
    My Bikes
    Mostly old stuff.
    Posts
    1,927
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Dante- Where in the great Keystone State are you located? Someone may be able to come up with a local bike shop that can help you out with the wheel (at least...).

    Keep in mind that Tony of IRO fame is in Middleburg, so shipping may either be quick, or a local pick up. His rear wheel is $105...

  20. #20
    The Brave Descender High Fist Shin's Avatar
    Join Date
    Mar 2005
    Location
    S.E. Pennsylvania
    My Bikes
    Univega Viva Touring, Cannondale Six/13
    Posts
    2,074
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DiegoFrogs
    Dante- Where in the great Keystone State are you located? Someone may be able to come up with a local bike shop that can help you out with the wheel (at least...).

    Keep in mind that Tony of IRO fame is in Middleburg, so shipping may either be quick, or a local pick up. His rear wheel is $105...
    I live in Souderton, Pa. Nice little hilly town.

    I will be getting wheels from Tony and IRO. Too many great reviews on IRO, and he is somewhat local. I also found a guy who does frame repairs. He can fix the frame, bead blast and powder coat for about $200.00. This sound pretty good to me. Now all I have to decide on is which color... Candy Orange maybe.
    I'm going to drop off the frame next weekend for repairs and contact IRO the week after.

    I'll keep everyone posted on the progress and provide pictures when I get the frame back.

    Thanks everyone.

    Dante
    In life there are no mistakes, only lessons. -Shin

  21. #21
    Behind EVERYone!!! baj32161's Avatar
    Join Date
    Jan 2005
    Location
    Burlington ON, Canada
    My Bikes
    '11 Cannondale Synapsese 5 105
    Posts
    5,902
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Any news yet? Naturally....I am curious.

    Cheers,

    Brian
    A good teacher protects his pupils from his own influence.

    ― Bruce Lee

  22. #22
    Senior Member
    Join Date
    Jan 2006
    Location
    Austin TX
    Posts
    455
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Machin Shin
    I also found a guy who does frame repairs. He can fix the frame, bead blast and powder coat for about $200.00.
    well I'm jealous.

Posting Permissions

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