Builder's Spotlight The Paceline Forum Builder's Spotlight


Go Back   The Paceline Forum > General Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 08-16-2019, 08:13 PM
gibbo gibbo is offline
Member
 
Join Date: Jan 2019
Location: Tasmania
Posts: 55
32 spoke 2x or 3x

Any advise in the difference between lacing a 32 spoke wheel in 3x vs 2x other than looks?


Sent from my iPhone using Tapatalk
Reply With Quote
  #2  
Old 08-16-2019, 10:46 PM
bikinchris bikinchris is offline
Senior Member
 
Join Date: Mar 2004
Location: Broussard, LA
Posts: 2,945
Quote:
Originally Posted by gibbo View Post
Any advise in the difference between lacing a 32 spoke wheel in 3x vs 2x other than looks?


Sent from my iPhone using Tapatalk
3X spreads the load wider and will build a more durable wheel.
__________________
Chris
Broussard, LA
Reply With Quote
  #3  
Old 08-17-2019, 01:26 AM
osbk67 osbk67 is offline
Member
 
Join Date: Aug 2018
Posts: 57
32-spoke wheels were the mainstay in professional road racing from the 1970s or earlier until perhaps the mid-1990s, and lingered on at Paris-Roubaix until around ten years ago. I doubt 1% of them were two-cross.
Reply With Quote
  #4  
Old 08-17-2019, 02:34 AM
gibbo gibbo is offline
Member
 
Join Date: Jan 2019
Location: Tasmania
Posts: 55
Cool, sounds like 3x is the way to go! Thanks!


Sent from my iPhone using Tapatalk
Reply With Quote
  #5  
Old 08-17-2019, 02:47 PM
9tubes 9tubes is offline
Member
 
Join Date: Jul 2019
Location: Amazonville, WA
Posts: 34
Is this a mountain bike wheel?
Reply With Quote
  #6  
Old 08-17-2019, 03:01 PM
speedevil's Avatar
speedevil speedevil is offline
Senior Member
 
Join Date: Oct 2017
Location: western Kentucky
Posts: 199
If these hubs have been laced previously, following the previous lacing pattern is a good idea. You can determine the previous pattern from the impressions in the flanges made by the tensioned spokes. 3x will be more tangential than 2x.

FYI - I once laced a rear wheel 3x DS and 2x NDS and I don't think I'll do that again - not worth the effort. 3x DS and radial NDS - that I might try - once - but only on a new hub.
__________________
Dale, NL4T
Reply With Quote
  #7  
Old 08-17-2019, 08:03 PM
Mark McM Mark McM is offline
Senior Member
 
Join Date: Jun 2006
Posts: 5,550
Quote:
Originally Posted by gibbo View Post
Any advise in the difference between lacing a 32 spoke wheel in 3x vs 2x other than looks?
A lot of hypotheses and conjectures have been made about how the number of spoke crossings affects wheel strength, stiffness and durability, but in reality, it makes little difference. Henri Gavin (at Duke University) built and instrumented a set of wheels with differing numbers of crossing, and measured the stresses and strains in the spokes while they were in being ridden, as well as measuring their radial and lateral stiffnesses. He found that the number of crossings had no meaningful difference in spoke loading or fatigue, and only a minor differences in stiffness, which is shown in his published paper:

https://pdfs.semanticscholar.org/ba5...32b5450e4d.pdf
Reply With Quote
  #8  
Old 08-17-2019, 08:25 PM
Mikej Mikej is offline
Senior Member
 
Join Date: Nov 2004
Posts: 2,791
Nice study - thanks
Reply With Quote
  #9  
Old 08-18-2019, 01:56 PM
9tubes 9tubes is offline
Member
 
Join Date: Jul 2019
Location: Amazonville, WA
Posts: 34
Quote:
Originally Posted by Mark McM View Post
A lot of hypotheses and conjectures have been made about how the number of spoke crossings affects wheel strength, stiffness and durability, but in reality, it makes little difference. Henri Gavin (at Duke University) built and instrumented a set of wheels with differing numbers of crossing, and measured the stresses and strains in the spokes while they were in being ridden, as well as measuring their radial and lateral stiffnesses. He found that the number of crossings had no meaningful difference in spoke loading or fatigue, and only a minor differences in stiffness, which is shown in his published paper:

https://pdfs.semanticscholar.org/ba5...32b5450e4d.pdf
Thanks! I love seeing real data rather than folklore.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 01:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.