Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Redishing and spoke lenght. Can I do it?

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.

Redishing and spoke lenght. Can I do it?

Old 09-09-08, 05:09 PM
  #1  
huerro
Villainous
Thread Starter
 
huerro's Avatar
 
Join Date: Sep 2006
Location: Austin
Posts: 1,894

Bikes: Trek 420, Cyclops

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Redishing and spoke lenght. Can I do it?

I have a nice old that wheel that no one on CL wants, so I'm planning on putting in a solid axle and running it fixed as a suicide hub or maybe just ss. It's a 28h DA hub laced 2x to a Matrix iso cII rim. Right now it is dished for 7 speed. I ran the numbers in spokecalc and got a left length of 288.6 and a right length of 286.9.

Are those spoke lengths close enough to redish as-is or will I need to buy new spokes?

Thanks.
huerro is offline  
Old 09-09-08, 05:30 PM
  #2  
Ex Pres 
#39
 
Ex Pres's Avatar
 
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,058
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 324 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
NEI, but it will probably work. I've done it. You calculated the spoke lengths you need, but what's in there now?
__________________
72 Frejus, Holdsworth Record & special CNC / 74 Italvega NR / c80 ?French? / 82 Raleigh Intl MkII / 83 Trek 620 / 87 Centurion IM MV / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 10 Vassago Fisticuff

For Sale: Litespeed Classic 53cm / THIS POST
Ex Pres is online now  
Old 09-09-08, 06:52 PM
  #3  
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,321

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Bob Barker View Post
NEI, but it will probably work. I've done it. You calculated the spoke lengths you need, but what's in there now?
It also depends how much you're going to dish it over to get it to line up to wherever the crank/chainring is. Simplest answer would be to just do it. Two indications is that one the spoke tensions are way off or two you start running out of threads on one side.
operator is offline  
Old 09-09-08, 07:08 PM
  #4  
sfclearwater
Senior Member
 
Join Date: Jun 2008
Location: Canada
Posts: 207
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have taken a number of older wheels (usually with 5-7 speed freewheels) and re-dished them to run a single speed freewheel. The majority of them have 2mm longer spokes on the non-drive side, and this is usually close enough that you won't have a problem.

As operator said it depends how you re-space the axle (i.e. what chain line you choose) and the resultant re-dish necessary. If you don't want to mess with your bottom bracket or crank then you are stuck with whatever chain line they can provide, usually 41mm and 46mm for a road double I think; using the inner position (41mm) will make for less re-dish if you are worried about it.
sfclearwater is offline  
Old 09-09-08, 07:18 PM
  #5  
BCRider
Senior Member
 
BCRider's Avatar
 
Join Date: Mar 2008
Location: The 'Wack, BC, Canada
Posts: 5,466

Bikes: Norco (2), Miyata, Canondale, Soma, Redline

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Re-dish as much as the drive side spokes will allow. I wouldn't want to see the ends much more than 3 mm down the length of the spokes or there won't be a whole lot of threads still holding on. And if you see threads appear on the inside end of the nipple you've gone about 3 turns farther than you should.

But if you ease the drive side and take it up on the NDS and stay within 2 to 3 mm down from the inside end for the DS spokes and the NDS don't stickout by more than a couple of mm's and live with whatever dish yoiu have there you'll have reduced the dish by quite a bit and used the spokes you have. The only thing that would mess up this plan would be if the original builder used spokes on either side that are a little long or a little short the wrong way around which would mess up this plan.

So the first step would be to pull off the rim tape or whatever and have a look at how far the are recessed or sticking out right now.
BCRider is offline  
Old 09-09-08, 07:24 PM
  #6  
huerro
Villainous
Thread Starter
 
huerro's Avatar
 
Join Date: Sep 2006
Location: Austin
Posts: 1,894

Bikes: Trek 420, Cyclops

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I guess I'll just have to give it a shot then. I've done 5 speed wheels before with no trouble, but worried that 7sp might be pushing things.
huerro is offline  
Old 09-09-08, 08:04 PM
  #7  
BCRider
Senior Member
 
BCRider's Avatar
 
Join Date: Mar 2008
Location: The 'Wack, BC, Canada
Posts: 5,466

Bikes: Norco (2), Miyata, Canondale, Soma, Redline

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Why? It's no different. Just more turns of the spokes if they have the optimum lengths.
BCRider 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

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.