Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Junior Member
    Join Date
    May 2008
    Posts
    23
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Lacing a 32h hub to a 36h rim

    Is this possible? I thought it was by skipping two spoke holes on the rim. You would have to lace the top half and bottom halves of the wheel separately. Any ideas?

    -- Boris

  2. #2
    AEO
    AEO is online now
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,246
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    http://www.sheldonbrown.com/rinard/

    the fun part is calculating the spoke length required for that.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  3. #3
    Newbie
    Join Date
    Apr 2009
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    why not just buy a 32h rim? dtswiss makes some nice ones

  4. #4
    Senior Member DannoXYZ's Avatar
    Join Date
    Jul 2005
    Location
    Saratoga, CA
    Posts
    11,496
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You'll need 8 different spoke-lengths...

  5. #5
    Luddite
    Join Date
    Jan 2007
    Location
    Portland, OR
    My Bikes
    Univega Gran Turismo, Cannondale Synapse, Bianchi Aquiletta Folder
    Posts
    276
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I wouldn't recommend it- assuming the rim isn't offset-drilled, you would still need to skip a hole every 8,which would leave 4 spots on the rim with no spoke. It would be murder to get it straight and tensioned and the spots with no spoke would be weaker. Better to lace a 32 hole rim to a 36 hole hub- then it's just a matter of getting the spoke lengths right. I once laced a 40 hole hub to a 36 hole rim- I needed 9 different spoke lengths (no dish on the wheel- otherwise it would have been 18 lengths). An interesting geometry problem.

  6. #6
    Senior Member
    Join Date
    Mar 2008
    Posts
    3,936
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by kristiancyclist View Post
    Is this possible?
    Possible, but inadvisable. I'm no stranger to experimenting, but I wouldn't try that unless:

    - I was desperate for something to do
    - I couldn't get any other parts
    - I really needed a wheel
    - That rim is also available in 20-24 H drilling, to have some indication that it'd survive the increased span between spokes
    - That the rim isn't drilled with a serious offset angle between spokes


    Quote Originally Posted by kristiancyclist View Post
    I thought it was by skipping two spoke holes on the rim.
    You "can't" skip two holes consecutively, you'd want them spaced out. but that means that half the wheel will be built with the spokes in lateral cross. Doable, but only if there isn't much offset in the drilling.

    Quote Originally Posted by kristiancyclist View Post
    Any ideas?
    - The other way around is much safer, if a bit tedious to build
    - Ride with extreme care and attention to changes
    - Don't expect too much
    - Assume full responsibility for your mismatched build

    If I was desperate to use those bits I'd make myself a pair of adapter flanges. Basically two big washers, with two rows of holes. The holes closest to the inside edge would let the washer be screwed onto the the 16H hub flange while the outside row would hold 18 holes to match the rim. Might require some extra tweaking if it's on the DS of an externally geared hub.

  7. #7
    Senior Member
    Join Date
    May 2005
    Location
    Terre Haute, Lafayette, or Indianapolis, IN, depending on the day
    My Bikes
    n, I would like n+1
    Posts
    1,916
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    First of all, you don't need 8 spoke lengths. I've done this with a Shimano high flange mtb disc hub and a 20" DX32 rim (temporary for a recumbent project if you were wondering), and I used the spoke length which was correct for 36 hole. However, you're going to have to do the hub in 4 groups, not 2 to avoid a huge gap in the rim. As a result, half of your spokes will enter eyelets on the wrong side of the rim. Also, it's going to look really bad and people are probably going to write you off as not being is the sharper half of the tools, no matter how good you are on a bike.
    So, in conclusion, and having actually done this myself, does it work, yes. Should you do it, no.

  8. #8
    Junior Member
    Join Date
    May 2008
    Posts
    23
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks to everyone for their responses! I appreciated the help. :-)

    -- Boris

Posting Permissions

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