Results 1 to 10 of 10
  1. #1
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    11

    help: different calculator, different spoke lengths

    could someone please double check my math?

    front wheel
    hub: hope pro II evo 15mm

    (lf 56/rf54/lftoc19.5/rftoc34/hole 2.6)

    rim: velocity blunt sl 26"
    holes: 32
    lacing: 3x

    pwb is giving me 263.1 and 265.2 using a 544 erd, and

    through edd and bike school, i get 262.3 and 264 using the mfg's 544.6 erd.

    this will be my first wheel, so i want to give myself all possible chances for success.

    thanks,
    robert

  2. #2
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    45,248
    Quote Originally Posted by alternaklaus View Post
    could someone please double check my math?

    front wheel
    hub: hope pro II evo 15mm

    (lf 56/rf54/lftoc19.5/rftoc34/hole 2.6)

    rim: velocity blunt sl 26"
    holes: 32
    lacing: 3x

    pwb is giving me 263.1 and 265.2 using a 544 erd, and

    through edd and bike school, i get 262.3 and 264 using the mfg's 544.6 erd.

    this will be my first wheel, so i want to give myself all possible chances for success.

    thanks,
    robert
    why did you use different ERDs? That is likely where most of the differences are.

    Ask stated in dozens (hundreds?) of threads here, you need to measure the components yourself. Then use just one calculator so you know what works for you in the future. Too many variables otherwise.
    mtbtires.com
    The trouble with common sense is it is no longer common

  3. #3
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    11
    i used velocity's erd on the other two calculators. that's how i first noticed that the pwb number was different. the change is erd between the two doesn't explain the difference, considering the pwb recommended length is smaller with the smaller diameter rim..

    i was hoping to order everything at the same time. i'm also not sure that i would be able to measure the parts with any more accuracy than the measurements i've found online.

    i was hoping this was going to be the easy part

  4. #4
    transmitter~receiver
    Reputation: meltingfeather's Avatar
    Join Date
    May 2007
    Posts
    6,880
    don't use the prowheelbuilder calc.
    it's whack.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  5. #5
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    11
    bah. i had assumed, for no apparent reason, it was the most reliable.

    i guess i will do what i can to ensure my #'s are right and use the other calculators.

    so... should i use brass nipples or aluminum?

  6. #6
    mtbr member
    Reputation: crclawn's Avatar
    Join Date
    Sep 2010
    Posts
    886
    I used to go for the bling bling aluminum. I just use plain old black nips now. Half the cost and strong.
    When the **** did we get ice cream?

  7. #7
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    11
    i gave up trying to justify al. plus, i'm doing a blue rim, so i don't know that the color would be any benefit, or i would probably compromise. a guy at the local trails told me his frame glows in the dark and i almost $%^ my pants..

  8. #8
    transmitter~receiver
    Reputation: meltingfeather's Avatar
    Join Date
    May 2007
    Posts
    6,880

    help: different calculator, different spoke lengths

    Quote Originally Posted by alternaklaus View Post
    i gave up trying to justify al. plus, i'm doing a blue rim, so i don't know that the color would be any benefit, or i would probably compromise. a guy at the local trails told me his frame glows in the dark and i almost $%^ my pants..
    They weigh 1/3 of brass and come in colors. How hard is it to justify? I've never had a problem with aluminum nipples. Must be the Central Texas climate or something.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  9. #9
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    45,248

    help: different calculator, different spoke lengths

    Quote Originally Posted by meltingfeather View Post
    They weigh 1/3 of brass and come in colors. How hard is it to justify? I've never had a problem with aluminum nipples. Must be the Central Texas climate or something.
    I have never had an issue with aluminum nipples, either. Must be the WEsTern Oregon climate (now central Washington)

    I use aluminum for the colors. The weight difference is too small to care about.
    mtbtires.com
    The trouble with common sense is it is no longer common

  10. #10
    mtbr member
    Reputation: One Pivot's Avatar
    Join Date
    Nov 2009
    Posts
    4,048
    Never had a problem with alu either... I use them because I have a giant massive surplus of them!

    I wont lie though, brass does build up easier.. even if using anti seize. But alu builds up just fine and isnt a problem, so thats nearly irrelevant too I suppose.

Similar Threads

  1. FatWheel spoke calculator
    By endorfin in forum Fat Bikes
    Replies: 1
    Last Post: 02-13-2013, 09:31 AM
  2. How accurate are Stan's Spoke Lengths
    By anderson76 in forum Wheels and Tires
    Replies: 4
    Last Post: 12-17-2012, 09:25 PM
  3. Spoke Lengths
    By Macbeth in forum Fat Bikes
    Replies: 4
    Last Post: 03-15-2012, 10:58 AM
  4. are these spoke lengths correct?
    By brankulo in forum Wheels and Tires
    Replies: 4
    Last Post: 07-30-2011, 11:04 AM
  5. DT Swis spoke calculator
    By rav400 in forum Wheels and Tires
    Replies: 4
    Last Post: 01-28-2011, 09:27 AM

Posting Permissions

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

Hot Deals

Contests

Latest Mountain Bike Articles

Videos

MTBR on Facebook