Go Back  Bike Forums > Bike Forums > Touring
Reload this Page >

Straight 15 gauge spokes?

Notices
Touring Have a dream to ride a bike across your state, across the country, or around the world? Self-contained or fully supported? Trade ideas, adventures, and more in our bicycle touring forum.

Straight 15 gauge spokes?

Old 03-15-14, 05:22 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Straight 15 gauge spokes?

Hi All, My back-up touring bike's wheelset is laced with this spoke size and is OEM. As this doesn't seem a more popular choice/option my question is why not?

TIA,
Brad
bradtx is offline  
Old 03-15-14, 08:14 AM
  #2  
Senior Member
 
Join Date: May 2006
Location: San Diego
Posts: 1,435

Bikes: IF steel deluxe 29er tourer

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
As you might expect, 15 ga is less popular because 14 ga is readily available. A thicker spoke will be a stronger spoke, and the weight penalty, within the context of unsupported touring, ultra light or not, is not meaningful.
Cyclesafe is offline  
Old 03-15-14, 09:03 AM
  #3  
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,357 Times in 863 Posts
Still occasionally riding my 36 spoke wheel pair , I built on the 70s with 15ga straight spokes ..

they're sorta light road wheels , though .. brass in spoke nipples is thicker because the threaded hole is smaller .


... seems if the pragmatic 14 straight is not used , people build with Butted Spokes

often 15 in the center . 14 on the ends.

touring, worrying about spoke weight is an odd thing , Butting does have a physical benefit

of taking some flexing stress off the ends , and absorbing it in the running length of the spoke.

not worrying about weight , I built relyable touring wheels with 14 ga spokes.. 88 of them in the set ..40/48.
fietsbob is offline  
Old 03-15-14, 03:52 PM
  #4  
Senior Member
 
Join Date: Sep 2008
Posts: 5,205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
Likes: 0
Liked 81 Times in 64 Posts
Originally Posted by bradtx
Hi All, My back-up touring bike's wheelset is laced with this spoke size and is OEM. As this doesn't seem a more popular choice/option my question is why not?

TIA,
Brad
Provide a generous margin for error with the bigger spoke. Cutting costs a bit with the thinner spoke. When I was young and 60lbs lighter all my wheels were straight 15g 36 spoke wheels, racing or touring with rim weight and tire size making the difference. Never broke a spoke but did damage wheels in use. At that time I saw folks who are now my size and came to the conclusion 15g just didn't provide enough meat on the drive side of the rear wheel.

Shaving ounces in spokes for touring application is really misguided.
LeeG is offline  
Old 03-15-14, 07:25 PM
  #5  
Senior Member
 
Join Date: Jan 2010
Location: Eugene, Oregon
Posts: 7,048
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 509 Post(s)
Likes: 0
Liked 9 Times in 8 Posts
Originally Posted by the Bicycle Wheel, 3rd edition pp46-7 by Jobst Brandt
...most fatigue failures occur at these places (elbows and threads of straight-gauged spokes)...[T]he most valuable contribution of swaging is that peak stresses are absorbed in the straight midsection rather than concentrated in the threads and elbow, thereby substantially reducing fatigue failures.
In short, there are fewer spoke failures by using swaged 14/15 gauge (1.8/2.0 mm) spokes than when straight 15 gauge or 14 gauge are used.
B. Carfree is offline  
Old 03-16-14, 05:30 AM
  #6  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Thanks for the replies.

My guess was that since most hubs accept a 2.0 mm spoke head, the 1.8 would be 'loose' and it just isn't an ideal match.

Because this is the first bike I've owned with the 15 gauge spokes I was curious as to why this size isn't used more often. There is no accounting if or how many may spokes have been replaced before it came to me, but this high mileage tourer is still equipped with them. With rust blush on the fork's low rider points it's possibly been loaded to a medium weight or more.

Thanks again for the responses!

Brad
bradtx is offline  
Old 03-16-14, 10:11 AM
  #7  
-
 
seeker333's Avatar
 
Join Date: Feb 2004
Posts: 3,865

Bikes: yes!

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 282 Post(s)
Liked 38 Times in 36 Posts
Originally Posted by bradtx
...My guess was that since most hubs accept a 2.0 mm spoke head, the 1.8 would be 'loose' and it just isn't an ideal match...
If it bothers you a lot, spoke washers are inexpensive (link per Mr Brown):

Brass Flat Washer, #2 Hole Size, 0.0890" ID, 0.0280" Nominal Thickness (Pack of 100) | AmazonSupply.com

However, I think I'd go ahead and respoke for the same amount of labor, using WS DB14:

Wheelsmith 2.0/1.7 x 260mm Silver Spokes. Bag of 50. @ eBikeStop.com

Note that WS SG spokes (DT too) are less expensive than DB at 60% of the cost (SG are option for those mostly ignoring previous discussion and simply want least expensive spokes from a reputable supplier):

Wheelsmith 2.0 x 262mm Silver Spokes. Bag of 50. @ eBikeStop.com
seeker333 is offline  
Old 03-16-14, 10:34 AM
  #8  
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,357 Times in 863 Posts
My guess was that since most hubs accept a 2.0 mm spoke head, the 1.8 would be 'loose'
not when there is any tension on them, in a built wheel,

the spoke nipple tightening of course pulls the J hook against the edge of the hole in the Alloy hubflange.

spoke thread is rolled in, so its bigger than 2.0mm anyhow.
fietsbob is offline  
Old 03-16-14, 02:05 PM
  #9  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by seeker333
If it bothers you a lot, spoke washers are inexpensive (link per Mr Brown)...
The bike doesn't have spoke washers and the spoke's gauge isn't a concern, rather just a curiosity. I also have to make a correction, it seems that Cannondale used 15 gauge spokes on many models in '96 and I owned a roadie, bought new, that was so equipped. Those wheels are still doing well on my daughter"s bike.

Brad
bradtx is offline  
Old 03-16-14, 02:59 PM
  #10  
Senior Member
 
Doug64's Avatar
 
Join Date: Mar 2009
Location: Oregon
Posts: 6,495
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 1185 Post(s)
Liked 842 Times in 438 Posts
Originally Posted by bradtx
The bike doesn't have spoke washers and the spoke's gauge isn't a concern, rather just a curiosity. I also have to make a correction, it seems that Cannondale used 15 gauge spokes on many models in '96 and I owned a roadie, bought new, that was so equipped. Those wheels are still doing well on my daughter"s bike.

Brad
Another curiosity: Cannondale used titanium spoke nipples in that era of wheels. Seems like the wheels were built to be a good balance of weight and strength.
Doug64 is offline  
Old 03-16-14, 03:08 PM
  #11  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by Doug64
Another curiosity: Cannondale used titanium spoke nipples in that era of wheels. Seems like the wheels were built to be a good balance of weight and strength.
I didn't know that, thanks.

Brad
bradtx is offline  
Old 03-16-14, 03:41 PM
  #12  
Senior Member
 
Doug64's Avatar
 
Join Date: Mar 2009
Location: Oregon
Posts: 6,495
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 1185 Post(s)
Liked 842 Times in 438 Posts
Originally Posted by bradtx
I didn't know that, thanks.

Brad
Access to Bikepedia can make anyone sound knowledgeable 1996 Cannondale T700 - BikePedia

Last edited by Doug64; 03-16-14 at 11:06 PM.
Doug64 is offline  
Old 03-16-14, 10:44 PM
  #13  
Senior Member
 
Join Date: Dec 2010
Location: Above ground, Walnut Creek, Ca
Posts: 6,681

Bikes: 8 ss bikes, 1 5-speed touring bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Likes: 0
Liked 4 Times in 4 Posts
don't know if anybody mentioned it, but be aware that spoke nipples for 15ga and 14ga spokes are NOT interchangeable. so if you plan to carry spares make sure you have the right size...
hueyhoolihan is offline  
Old 03-16-14, 11:47 PM
  #14  
Senior Member
 
Join Date: Jul 2011
Posts: 2,441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 33 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
One option is to use 15s on the rear wheel on the non-drive side. It is supposed to make a more durable wheel.

"In short, there are fewer spoke failures by using swaged 14/15 gauge (1.8/2.0 mm) spokes than when straight 15 gauge or 14 gauge are used."

It is hard to have fewer failures than zero. Spoke superiorities are largely folkloric when the wheels are properly built using quality components that are a good fit to each other.
MassiveD is offline  
Old 03-17-14, 05:43 AM
  #15  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by hueyhoolihan
don't know if anybody mentioned it, but be aware that spoke nipples for 15ga and 14ga spokes are NOT interchangeable. so if you plan to carry spares make sure you have the right size...
Originally Posted by MassiveD
One option is to use 15s on the rear wheel on the non-drive side. It is supposed to make a more durable wheel.



"In short, there are fewer spoke failures by using swaged 14/15 gauge (1.8/2.0 mm) spokes than when straight 15 gauge or 14 gauge are used."

It is hard to have fewer failures than zero. Spoke superiorities are largely folkloric when the wheels are properly built using quality components that are a good fit to each other.
I learned both of these points when I researched 15 gauge spokes before posting.

Brad
bradtx is offline  
Old 03-17-14, 06:01 AM
  #16  
Senior Member
Thread Starter
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 5 Times in 5 Posts
Originally Posted by Doug64
Access to Bikepedia can make anyone sound knowledgeable 1996 Cannondale T700 - BikePedia
Mine appear to be the standard brass, but the rims are Sun L18s rather than the catalog spec., which is sometimes different from production.

Brad
bradtx is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mjolniir
Clydesdales/Athenas (200+ lb / 91+ kg)
37
11-03-12 03:19 PM
bud16415
Touring
24
08-16-11 05:45 AM
Looigi
Bicycle Mechanics
7
08-01-11 08:49 PM
Lone_rider
Bicycle Mechanics
12
09-28-10 07:08 PM
dooodstevenn
Clydesdales/Athenas (200+ lb / 91+ kg)
4
07-27-10 06:28 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.