Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Letís talk about UWMHPE (dyneema) spokes.

Notices
General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Letís talk about UWMHPE (dyneema) spokes.

Old 10-31-22, 09:23 PM
  #1  
rosefarts
With a mighty wind
Thread Starter
 
Join Date: May 2015
Posts: 2,267
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 912 Post(s)
Liked 654 Times in 388 Posts
Letís talk about UHMWPE (dyneema) spokes.

How cool of an idea are these. Definitely a pain to build but I love that someone thought about this.

In the rock climbing world​​, ​​​a super light 8mm runner of this material is stronger than a 1Ē nylon runner. This is long tested technology that has been in use there for 20 years.

Of note, a well used but not rotten nylon sling is as strong 10 years old as the day it was new. The UWMHPE is half strength.

Iím not a beta tester but I really want to ride these. Sounds so fun.

https://berdspokes.com/

https://youtu.be/XTSJ2gmrkpo

Iím sure Iím too cheap to find out.

Last edited by rosefarts; 10-31-22 at 10:38 PM.
rosefarts is offline  
Old 10-31-22, 09:27 PM
  #2  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,938 Times in 1,261 Posts
Long running thread on MTBR. Started out with a guy eager to duplicate the Berd spokes. He got a C&D from Berd about their patent, which is mainly about how the spokes attach at the ends, but the thread continued. People have also had trouble sourcing the correct cord which seemed to be some kind of embargo arranged by Berd, but lately seems like the pressure is off or people are sourcing it overseas. I tossed out a lot of free ideas but never actually built anything. In the last year a guy in England has gone through and tried a lot of the old ideas for real and done a great job, and posted some videos, which brings it all to reality.

https://www.mtbr.com/threads/make-yo...pokes.1091276/
__________________
Genesis 49:16-17

Last edited by Darth Lefty; 10-31-22 at 09:32 PM.
Darth Lefty is online now  
Likes For Darth Lefty:
Old 10-31-22, 09:35 PM
  #3  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,938 Times in 1,261 Posts
Since this video in the spring, the person who posted it has discovered one problem he has, one the Berd patent avoids, is chafing between spokes at the hub. He has also tried some funny loop shapes for spoke ends going between two holes, that I really don't understand what he's trying to accomplish.

__________________
Genesis 49:16-17

Last edited by Darth Lefty; 10-31-22 at 09:53 PM.
Darth Lefty is online now  
Old 10-31-22, 09:56 PM
  #4  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,938 Times in 1,261 Posts
oh and sorry to point this out, your title acronym is out of order. UHMWPE: Ultra-high molecular weight polyethylene
__________________
Genesis 49:16-17
Darth Lefty is online now  
Old 10-31-22, 10:39 PM
  #5  
rosefarts
With a mighty wind
Thread Starter
 
Join Date: May 2015
Posts: 2,267
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 912 Post(s)
Liked 654 Times in 388 Posts
Originally Posted by Darth Lefty View Post
oh and sorry to point this out, your title acronym is out of order. UHMWPE: Ultra-high molecular weight polyethylene
Dang. I tried to edit the title and nothing changed.
rosefarts is offline  
Old 11-01-22, 05:55 AM
  #6  
chaadster
Thread Killer
 
Join Date: Aug 2008
Location: Ann Arbor, MI
Posts: 11,800

Bikes: '15 Kinesis Racelight 4S, '76 Motebecane Gran Jubilťe, '17 Dedacciai Gladiatore2, '12 Breezer Venturi, '09 Dahon Mariner, '12 Mercier Nano, '95 DeKerf Team SL, '19 Tern Rally, ‘21 Breezer Doppler Cafe+, ‘19 T-Lab X3

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 2238 Post(s)
Liked 1,304 Times in 797 Posts
Originally Posted by rosefarts View Post
Iím not a beta tester but I really want to ride these. Sounds so fun.

Iím sure Iím too cheap to find out.
You can get a taste of the ďfiber spoke lifestyleĒ much more affordably with Spinergy wheels.

Though a different material than Dyneema, PBO is similar and shares many of the same properties with regards to bicycle wheels, like lower weight and higher tensile strength than steel spokes, and better vibration damping.

Because of the target market, Spinergy wheels aren't as light Berd, but they cost 1/3 of what Berd do.
chaadster is offline  
Old 11-01-22, 10:57 AM
  #7  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,938 Times in 1,261 Posts
Berd has a couple of things making their spokes expensive. One is the time it takes to make the bury splices. That's time consuming and I can see how some special hand tools or experience could speed it up but not how a machine could do it. Another is the time it takes to build a wheel since the cord takes a set and has to be re-tensioned a few times over a few days. Finally is that it's just weight weenie stuff and they can charge by inverse of weight. I don't think the material itself is costing a lot per spoke
__________________
Genesis 49:16-17
Darth Lefty is online now  
Old 11-01-22, 12:08 PM
  #8  
rm -rf
don't try this at home.
 
rm -rf's Avatar
 
Join Date: Jan 2006
Location: N. KY
Posts: 5,638
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 860 Post(s)
Liked 292 Times in 211 Posts
Originally Posted by rosefarts View Post
How cool of an idea are these. Definitely a pain to build but I love that someone thought about this.

In the rock climbing world​​, ​​​a super light 8mm runner of this material is stronger than a 1” nylon runner. This is long tested technology that has been in use there for 20 years.

Of note, a well used but not rotten nylon sling is as strong 10 years old as the day it was new. The UWMHPE is half strength.

I’m not a beta tester but I really want to ride these. Sounds so fun.

https://berdspokes.com/

https://youtu.be/XTSJ2gmrkpo

I’m sure I’m too cheap to find out.
Not exactly aero for a road bike.

Ha, I started watching the youtube link.
His wheel weight comparison:
1. "they are pretty much like the best alloy wheels you can get". 2040 grams.
2. the Berd wheels: 1410 grams.
I bought some moderate priced aluminum wheels back in 2005 or so. 1550 grams. They replaced my original inexpensive stock wheelset, which was around 2100 grams.
~~
nice ride review. "that feeling just I don't know, feels different"
rm -rf is offline  
Old 11-01-22, 12:27 PM
  #9  
GhostRider62
Senior Member
 
Join Date: Apr 2021
Posts: 3,487
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 2048 Post(s)
Liked 1,709 Times in 1,094 Posts
I have a Dyneema tent and backpack, light and strong. It is also used for personal protection like in plates.

I am not sure what they are made from but the Farspot Ventoux use some sort of composite spoke that is about 4 mm x 1.2 mm. Very strong. A light fell off the rear into the spokes and steel spokes would have broken but these carbon spokes sheered the light into two pieces. One dislike is the whooshing sound almost like old disc wheels and the hubs are crap.
GhostRider62 is offline  
Old 11-01-22, 02:38 PM
  #10  
rosefarts
With a mighty wind
Thread Starter
 
Join Date: May 2015
Posts: 2,267
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 912 Post(s)
Liked 654 Times in 388 Posts
Originally Posted by rm -rf View Post
Not exactly aero for a road bike.

Ha, I started watching the youtube link.
His wheel weight comparison:
1. "they are pretty much like the best alloy wheels you can get". 2040 grams.
2. the Berd wheels: 1410 grams.
I bought some moderate priced aluminum wheels back in 2005 or so. 1550 grams. They replaced my original inexpensive stock wheelset, which was around 2100 grams.
~~
nice ride review. "that feeling just I don't know, feels different"
Fwiw, wheels are a lot heavier now than 2005. The hubs are heavier due to disc brakes, the wheels are wider, and the wheels are generally stronger.

That said, it was a stupid comparison. I really wanted him to have identical wheels with the only difference being the spokes.

I still find the idea pretty interesting. Does anybody remember the Tioga MTB disc that was so friggin cool when I was 14?
rosefarts is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.