Advertise on Bikeforums.net



User Tag List

Results 1 to 13 of 13
  1. #1
    Junior Member
    Join Date
    Apr 2013
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Carbon wheel (specialized) question

    Hi,
    I have a set of speciailized tri-spoke carbon wheels(pretty old, but man they're in great shape!). One that seems obvious that is the rear has threads on it for freewheel and I honestly am lost about how I'm supposed to get this compatible with my bike's setup. I want to use them for racing only. I currently have dura ace 7700 RD. My questions are 1) will this even work and 2) what cassette/adapter/freewheel do I need to buy to get it working? Thanks in advance!

  2. #2
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,536
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    It might help if you told us how many speeds you were riding.

    In any case, this is a freewheel hub and freewheels exist only up to 8s, with 7s being more common. If your bike is 9s or more, you are SOL regarding this wheel, otherwise, it's simply a matter of getting a suitable freewheel (you need to masure the hub to know if it takes 7s or 8s, though it might be possible to respace for a different freewheel and/or axle width (you cannot re-dish).
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  3. #3
    Junior Member
    Join Date
    Apr 2013
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Dura ace 7700 wasn't always 9-speed?

  4. #4
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,536
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by cheyguy2308 View Post
    Dura ace 7700 wasn't always 9-speed?
    I have no idea, I don't see a need to memorize every iteration of every component ever made. Nor do it see it as my job to search out info that those asking for help could easily provide.

    But if you're saying you have a 9s drivetrain, then you are SOL regarding this wheel.

    Save it up to build yourself a nice 7s or 8s beater or city bike, or sell it on ebay to someone who can use it. Of course if you have access to a machine shop, it might be possible to core out the hub, and transfer the wheel to an adapted freehub of some kind. This could be a nice project if you have the skill and resources.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  5. #5
    Junior Member
    Join Date
    Apr 2013
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    likewise, I had no idea you didn't know what 7700 was. Thanks for your rock-solid, yet wickedly A-type relay of information...pull the plug, it'll feel better.

  6. #6
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,536
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by cheyguy2308 View Post
    likewise, I had no idea you didn't know what 7700 was. Thanks for your rock-solid, yet wickedly A-type relay of information...pull the plug, it'll feel better.
    No need to get upset or offended. I gave you the info you needed in my first post, without needing to know the specifics.

    You came for help regarding compatibility, providing details on half the issue (the wheel being a F/W type), and assuming we'd all know the other half -- what exact drive train you had -- when you could just as easily said it was 9s.

    Unfortunately, you're not the first not to provide clear and complete info, nor will you be the last. At least you didn't ask if it would fit your Black 2001 Trek R-xxx, bike.

    In any case, you're welcome.

    BTW- I hope you find a use for the wheel, it would be a shame for it to just ollect dust in your garage
    Last edited by FBinNY; 04-07-13 at 01:28 PM.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  7. #7
    Junior Member
    Join Date
    Apr 2013
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    currently, that looks like it is all it's going to do. My wife does, however, ride a sora component set with an 8-speed cassette, so if all fails and I can get an 8-sp FW on the thing, I can give it to her I think. I still can't decide which is worse....dust or letting the wife ride in style. How/what would I "measure the hub" to see if it accepts 7 or 8 FW?

  8. #8
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,536
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    Here's a link to a freewheel/cassette width chart. Don't forget to add 2-3mm for the clearance from axle face to first sprocket. So you need to measure the distance from the hub's thread shoulder to the axle face, and compare. Precision isn't needed, just enough to call it 7s or 8s, since it can't be in between.

    Also consider the overall axle width, to make sure it fits the frame, or you could simply fit it and see.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  9. #9
    Junior Member
    Join Date
    Apr 2013
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I took a spare skewer and flushed it up against one threaded end and marked the other as it came out the other threaded end of the wheel, measured that and it was 5.25 inches (133.35mm). I'm assuming it's 8sp. I did read somewhere that shimano 8sp FWs work with 9sp RD. I'm becoming increasingly desperate, aren't I?

  10. #10
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,380
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    It's not the length of the axle, but the distance between the faces of the lock nuts. Axles protrude a few MM (typical Shimano is 5.5mm each end) to engage the drop outs of the frame/fork.

    The RDER will work with either 8 or 9.
    It's the SHIFTERS that matter.
    Last edited by Bill Kapaun; 04-07-13 at 02:51 PM.

  11. #11
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,536
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by cheyguy2308 View Post
    I took a spare skewer and flushed it up against one threaded end and marked the other as it came out the other threaded end of the wheel, measured that and it was 5.25 inches (133.35mm). I'm assuming it's 8sp. I did read somewhere that shimano 8sp FWs work with 9sp RD. I'm becoming increasingly desperate, aren't I?
    As Bill said above, it's the width between the locknut faces that counts. I suspect this is a 126mm wheel, therefore most likely 7s. If you really want to ride this wheel, all is not lost. You can compress the spacing of 7s freewheels to match 9s spacing. Of course you still only have 7s. It takes access to a machine shop with a surface grinder to do this, but it's very possible.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  12. #12
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,961
    Mentioned
    22 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cheyguy2308 View Post
    I took a spare skewer and flushed it up against one threaded end and marked the other as it came out the other threaded end of the wheel, measured that and it was 5.25 inches (133.35mm). I'm assuming it's 8sp. I did read somewhere that shimano 8sp FWs work with 9sp RD. I'm becoming increasingly desperate, aren't I?
    Yeah, you are. Shimano never made 8-speed freewheels. Sachs made a few, but they were the last gasp of the freewheel era.

    The Specialized tri-spoke wheel with freewheel threads was interchangeable between front and rear just by changing the axle. When 8-speed became common, Specialized introduced a cassette rear wheel.
    Jeff Wills

    All my bikes.

  13. #13
    bike whisperer Kimmo's Avatar
    Join Date
    Dec 2009
    Location
    Melbourne, Oz
    My Bikes
    copy/paste links: http://velospace.org/node/36949 http://velospace.org/node/47746 http://velospace.org/node/47747
    Posts
    6,842
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cheyguy2308 View Post
    Dura ace 7700 wasn't always 9-speed?
    Your OP only said (specifically even) the RD was 7700... almost implying the shifters were not.

    A 7700 RD will correctly index with every Shimano road group except 8s 7400.

    Anyway, you can use your 7700 shifter with a 8s freewheel, via #2 Shiftmate.

    Quote Originally Posted by cheyguy2308 View Post
    I took a spare skewer and flushed it up against one threaded end and marked the other as it came out the other threaded end of the wheel, measured that and it was 5.25 inches (133.35mm). I'm assuming it's 8sp.
    Subtract the length of bare axle from that and I'd say you're pretty close to 126mm

    Also, two decimal places on inches makes sense in this context, but on mm? The nearest half-mm is plenty

Posting Permissions

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