Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-28-07, 06:59 PM   #1
fatbat
spinspinspinspin
Thread Starter
 
fatbat's Avatar
 
Join Date: Nov 2004
Bikes:
Posts: 880
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Proper spokes for 3-speed hub wheelbuild?

Hi folks- got a question for you. I recently built myself a new wheel using an old 3-speed coaster hub. I've had huge problems with broken spokes (always at the head of the spoke) on this wheel, despite it being reasonably true and correctly tensioned. Looking at a broken spoke this evening, i realized that the spokeholes on the hub seemed much larger than the 15 gauge DT spokes i used for this wheel.

Could this be causing my problems with spoke breakage? If so, what gauge spokes are typically used with these hubs?

thanks-
fatbat is offline   Reply With Quote
Old 03-28-07, 08:01 PM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Posts: 26,916
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 213 Post(s)
Too small spokes can definitely lead to breakage at the hub. I'd guess that a coaster brake hub would be particular subject because you reverse the stress direction on the spokes every time you put on the brake.

How big are the holes in your hub. If they're 2.5mm, I'd probably try DT Alpine spokes. If they're 2.3mm, I'd go with 14 gauge spokes.

I don't use straight 15 gauge spokes for anything.
Retro Grouch is offline   Reply With Quote
Old 03-28-07, 08:21 PM   #3
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I just switched from 165 cranks to 175, immediately had to lower my seat.
operator is offline   Reply With Quote
Old 03-28-07, 10:24 PM   #4
bravozulu
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I recently went through that. I bought triple butted spokes and used the little brass spacer washers. The steel Sturmey Archer hub has thinner flanges ad thus they do not support the neck at the bend. Use two washers for the inside laced and three for the outside. check this:

http://www.bikeforums.net/archive/in.../t-144161.html
bravozulu is offline   Reply With Quote
Old 03-29-07, 07:53 AM   #5
cuda2k
Unique Vintage Steel
 
cuda2k's Avatar
 
Join Date: May 2005
Location: Allen, TX
Bikes: Kirk Frameworks JKS-C, Serotta Nova, Gazelle AB-Frame, Fuji Team Issue, Schwinn Crosscut, All-City Space Horse
Posts: 11,486
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by bravozulu
I recently went through that. I bought triple butted spokes and used the little brass spacer washers. The steel Sturmey Archer hub has thinner flanges ad thus they do not support the neck at the bend. Use two washers for the inside laced and three for the outside. check this:

http://www.bikeforums.net/archive/in.../t-144161.html
lol, reading that thread, I have no idea what my original question was that spurred that thread.

A combo of spacers for flange width and the correct diameter spoke is likely going to be the ultimate solution for you. 15 straight gauge probably isn't the ideal choice for that wheel setup, 14/15 DB would be my pick.
cuda2k is offline   Reply With Quote
Old 03-29-07, 08:30 AM   #6
fatbat
spinspinspinspin
Thread Starter
 
fatbat's Avatar
 
Join Date: Nov 2004
Bikes:
Posts: 880
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the useful advice- what's the best place to get a bag of spacers?
fatbat is offline   Reply With Quote
Old 03-29-07, 03:34 PM   #7
bravozulu
Senior Member
 
Join Date: Sep 2005
Bikes:
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Another link with a pic of a hub:

http://beauty.nagog.smasher.net:81/b...te/index.shtml

Link for the washers:

http://www.biketoolsetc.com/index.cg...=Wheel-and-Rim

When you order spokes, don't be afraid to ask about the DT Swiss Triple Butted
bravozulu is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 08:04 AM.