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  1. #1
    Senior Member BikeManDan's Avatar
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    Wheelbuilding went awry - spokes too long?

    I'm trying to build up my first wheel

    Alex TD17 700C rim to a Shimano Alfine hub
    TD17 is 605mm ERD according to their website
    Shimano Alfine has a flange diameter of 104.3mm and I recorded the hub center to flange as 25mm roughly for both sides. Specs here http://bike.shimano.com/catalog/cycl...=1187815175748

    Punching these numbers into a spoke calculator gave me 286mm for 32 spoke, 3 cross. I double checked the calculations by doing it in SpoCalc and also http://www.bikeschool.com/spokes/ . Both gave the same.


    So I put the wheel together and the spokes just weren't sitting right, they were too long. So I took all of the spokes out and am now back at square one. I then positioned the rim on the sofa and the hub in the cente of the rim with the axle in between the cushions so it remained upright and straight. I then laid a spoke across from the hub flange to the rim in the position that spoke would be in if it were laced and to me, it sure enough seemed like it was just too long by ~10mm.


  2. #2
    Senior Member FlatFender's Avatar
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    are you lacing 2x instead of 3x?
    Thats a mistake I commonly make

  3. #3
    Senior Member BikeManDan's Avatar
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    Fairly certain I did 3x

    First cross was over the adjacent spoke to the left (very close cross), then it was under another spoke, then it was over the final spoke
    Wish I took a picture before I dismantled it

  4. #4
    B-b-b-b-b-b-bicicle Rider orange leader's Avatar
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    Quote Originally Posted by FlatFender View Post
    are you lacing 2x instead of 3x?
    Thats a mistake I commonly make
    That's my first thought also. I second that!
    Rudimentum mendum menda
    Iudicium mendiosus
    Judicium per erratum
    Judicium et erratum!

  5. #5
    Guy on a Bike TreeUnit's Avatar
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    send a pic of what you've done so far. The third cross in a three-x pattern is very subtle and hard to see.

  6. #6
    Senior Member Alzonder's Avatar
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    Quote Originally Posted by dwoloz View Post
    Fairly certain I did 3x

    First cross was over the adjacent spoke to the left (very close cross), then it was under another spoke, then it was over the final spoke
    Wish I took a picture before I dismantled it
    The first and second crosses are supposed to be over and the third one is under. However it would 'not effect the length problems you are experiencing.
    I had similar problem where in my LBS they calculated the spoke length and I had to return 3 times, progressively getting shorter spokes until I finally got the right size

  7. #7
    Senior Member BikeManDan's Avatar
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    Well it was my mistake (surprise surprise)

    Alzonder, thank you for pointing that mistake out, it is over, over THEN under.

    The big issue was that I was connecting the "laced" spokes at too shallow of an angle. They needed to be one group further away than I was putting it. What threw me off was that to get it to its proper position like it is now, the spoke has to lay a good bit on top of the flange. I figure this must be how its supposed to be, just because the flange is so huge.

    So here she is all done, yay first wheel

  8. #8
    Senior Member Alzonder's Avatar
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    Dude, that's a sexy wheel
    Congrats

  9. #9
    Senior Member FlatFender's Avatar
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    where did you get the Alfine hub in the US?

  10. #10
    Senior Member BikeManDan's Avatar
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    Thanks


    I got the Alfine from an online store in Germany, was the only place I found to buy it. It may be available in the US soon but who knows. I was done waiting and just pulled the trigger

  11. #11
    Unique Vintage Steel cuda2k's Avatar
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    Sweet wheel. My last wheel build I had to take the rear apart twice before I got it right. First time the lacing was off one hole meaning the valve hole was blocked. Then I mis-laced *something* and end up with half too long / half too short of spoke situation.

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