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

Broken adjustment drop screw?

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.

Broken adjustment drop screw?

Old 05-11-19, 02:53 PM
  #1  
bikemig 
Senior Member
Thread Starter
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 14,973

Bikes: A bunch of old bikes and a few new ones

Mentioned: 104 Post(s)
Tagged: 0 Thread(s)
Quoted: 3564 Post(s)
Liked 29 Times in 27 Posts
Broken adjustment drop screw?

I'm rebuilding a Belgian made Libertas bicycle likely from the early 70s (perhaps early 60s). The adjustment screw was rusted and broke as I tried to unscrew it. It is not frozen.

The easy peasy solution is to ignore it. I'm going to run 32c tires on this bike and sitting the wheel back a bit further in the drop out is not a bad thing.

Still I'd like to replace it if possible. Ideas?

Not a great picture but you get the idea:

bikemig is offline  
Old 05-11-19, 02:57 PM
  #2  
Crankycrank
Senior Member
 
Join Date: Jan 2009
Location: San Diego, CA
Posts: 1,329
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 178 Post(s)
Likes: 0
Liked 6 Times in 5 Posts
First try cutting a slot in the exposed end with a hacksaw and use a screwdriver to back it out. Probably be wise to put some penetrating oil on it for a day or so to make it easier to unscrew.
Crankycrank is offline  
Old 05-11-19, 04:18 PM
  #3  
Vintage_Cyclist
Senior Member
 
Vintage_Cyclist's Avatar
 
Join Date: Nov 2013
Location: Big Apple
Posts: 1,233

Bikes: yes

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 316 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I had one of those break off on an Ironman, the same way. I used a needle nose vise grip pliers to grab the end in the drop-out slot and turn it out from the slot side. Came right out.
Vintage_Cyclist is offline  
Old 05-11-19, 06:08 PM
  #4  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 4,975

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 647 Post(s)
Liked 39 Times in 32 Posts
https://www.google.com/search?q=remo...w=1366&bih=610
dedhed is online now  
Old 05-11-19, 06:16 PM
  #5  
Lemond1985
Sophomore Member
 
Lemond1985's Avatar
 
Join Date: Jan 2019
Posts: 1,271
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 689 Post(s)
Liked 81 Times in 64 Posts
New screw? Ten dollar.

https://www.ebay.com/itm/Dropout-adj...gAAMXQdx5RGN5P
Lemond1985 is offline  
Old 05-11-19, 07:49 PM
  #6  
3alarmer
******
 
3alarmer's Avatar
 
Join Date: Nov 2010
Location: The Big Tomato
Posts: 17,217

Bikes: old ones

Mentioned: 221 Post(s)
Tagged: 0 Thread(s)
Quoted: 14110 Post(s)
Liked 30 Times in 27 Posts
...I have carefully drilled out a couple of them with a very small diameter drill bit, and then used a 3mm tap to retap the hole and push out any remainders of the original screw, but it's a lot of work. Try the other suggestions about removal before you go this route.

If you screw up badly, you can always tap it out larger to accept a 4 mm machine screw, but you can't usually go any larger than that. And it probably weakens the dropout a little if you make the hole larger.
3alarmer is offline  
Old 05-11-19, 08:59 PM
  #7  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 4,975

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 647 Post(s)
Liked 39 Times in 32 Posts
Originally Posted by Lemond1985 View Post
I just go to the hardware store and get stainless screw, acorn nut, and a spring for a lot cheaper.

https://www.ebay.com/p/uxcell-M3-X-4...Pcs/1263452874

https://www.homedepot.com/p/Everbilt...2448/204814143
dedhed is online now  
Old 05-12-19, 09:15 AM
  #8  
bikemig 
Senior Member
Thread Starter
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 14,973

Bikes: A bunch of old bikes and a few new ones

Mentioned: 104 Post(s)
Tagged: 0 Thread(s)
Quoted: 3564 Post(s)
Liked 29 Times in 27 Posts
Originally Posted by dedhed View Post
I just go to the hardware store and get stainless screw, acorn nut, and a spring for a lot cheaper.

https://www.ebay.com/p/uxcell-M3-X-4...Pcs/1263452874

https://www.homedepot.com/p/Everbilt...2448/204814143
That's a winner in terms of price for a replacement for sure.
bikemig is offline  
Old 05-12-19, 09:21 AM
  #9  
bikemig 
Senior Member
Thread Starter
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 14,973

Bikes: A bunch of old bikes and a few new ones

Mentioned: 104 Post(s)
Tagged: 0 Thread(s)
Quoted: 3564 Post(s)
Liked 29 Times in 27 Posts
Originally Posted by Vintage_Cyclist View Post
I had one of those break off on an Ironman, the same way. I used a needle nose vise grip pliers to grab the end in the drop-out slot and turn it out from the slot side. Came right out.
I like any solution that involves buying new tools. The piece in the drop out is not frozen so finding the right set of mini needle nose pliers should do the trick.
bikemig is offline  
Old 05-12-19, 11:27 AM
  #10  
Vintage_Cyclist
Senior Member
 
Vintage_Cyclist's Avatar
 
Join Date: Nov 2013
Location: Big Apple
Posts: 1,233

Bikes: yes

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 316 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by bikemig View Post
I like any solution that involves buying new tools. The piece in the drop out is not frozen so finding the right set of mini needle nose pliers should do the trick.
I used a 6" pair of pliers, this one specifically - https://www.amazon.com/Tools-VISE-GR.../dp/B00004YO5N

Attack the screw by attaching the pliers along the length of the screw, not perpendicular to the screw. The slot limits the amount you can turn it, maybe a 1/4 turn at a time, so you have to reattach the pliers a few times while doing it.
Vintage_Cyclist is offline  
Old 05-12-19, 11:55 AM
  #11  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,464

Bikes: 8

Mentioned: 183 Post(s)
Tagged: 0 Thread(s)
Quoted: 6721 Post(s)
Likes: 0
Liked 139 Times in 117 Posts
I broke off the rest, and got along without it .. no racing pace wheel changes , so it does not matter..
fietsbob is offline  
Old 05-12-19, 12:12 PM
  #12  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 6,805

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 89 Post(s)
Tagged: 0 Thread(s)
Quoted: 1594 Post(s)
Likes: 0
Liked 36 Times in 29 Posts
Originally Posted by Lemond1985 View Post
I just go to a local hardware store and get nice SS screws and nuts. Drive in from the rear, going through the nut first. Use the nut as a locknut. Works. 50 cents?
79pmooney is offline  
Old 05-12-19, 12:17 PM
  #13  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 6,805

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 89 Post(s)
Tagged: 0 Thread(s)
Quoted: 1594 Post(s)
Likes: 0
Liked 36 Times in 29 Posts
Originally Posted by fietsbob View Post
I broke off the rest, and got along without it .. no racing pace wheel changes , so it does not matter..
Anytime you can keep one of the screws, you hae a much simpler task of locating and centering the wheel. With just one, you simple force the wheel back with your left hand on tire at the chainstay until it hits that screw, center the tire and close the release. Having a completely free wheel is a lot harderto both locate and center.

Ben
79pmooney is offline  
Old 05-12-19, 02:23 PM
  #14  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,464

Bikes: 8

Mentioned: 183 Post(s)
Tagged: 0 Thread(s)
Quoted: 6721 Post(s)
Likes: 0
Liked 139 Times in 117 Posts
<C> long slot dropouts on my mid 70's DIY ,self Built, light Touring bike frame,

and another set used for a repair of an old Stumpie.. * I've never had a problem ..


*never put any in ..

Just don't have many wheel changes to do..
fietsbob 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.