Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Convert RD from hanger mount to direct mount

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

Convert RD from hanger mount to direct mount

Old 07-15-16, 05:28 PM
  #1  
Seizedpost
Bench vise user
Thread Starter
 
Join Date: Jul 2015
Posts: 530

Bikes: 2004 Orbea Marmaloda, 1982 S12-S LTD, 1956? Maino, 1985 Sagres

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 78 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Convert RD from hanger mount to direct mount

Hello all,
I have a Suntour V-GT rear derailleur that came with a clamp-on hanger mount. I installed it on a bike with a derailleur hanger integral to the dropout by unscrewing it from the hanger and screwing it onto the dropout. Unlike all my derailleurs that started life as direct mount, it cannot pivot at the hanger.

Am I missing something? Is there a bushing or clip that is needed to make it work properly?

Thanks!
Seizedpost is offline  
Old 07-15-16, 09:18 PM
  #2  
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 20,345

Bikes: Several, mostly not name brands.

Mentioned: 107 Post(s)
Tagged: 0 Thread(s)
Quoted: 1662 Post(s)
Liked 36 Times in 22 Posts
SunTour derailleurs used a thin nut behind the dropout to lock the mounting bolt in place on the hanger while allowing the derailleur to pivot on the mounting bolt. Are you perhaps missing this piece?
JohnDThompson is offline  
Old 07-16-16, 05:01 AM
  #3  
randyjawa 
Senior Member
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Posts: 9,083

Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, Rocky Mountain Cardiac

Mentioned: 142 Post(s)
Tagged: 0 Thread(s)
Quoted: 565 Post(s)
Likes: 0
Liked 15 Times in 13 Posts
I just went through this and found that the one fitted to the hanger bracket will not fit an integral hanger, the threaded section being too short to allow the thin nut to be installed and locked in place. Lucky I had a proper derailleur to install, and now I don't even need it. Found a NOS Suntour set that will be perfect for my Bianchi Touring.
__________________
Learn how to find, restore and maintain vintage road bicycles at... MY "TEN SPEEDS"
randyjawa is online now  
Old 07-16-16, 07:25 AM
  #4  
Seizedpost
Bench vise user
Thread Starter
 
Join Date: Jul 2015
Posts: 530

Bikes: 2004 Orbea Marmaloda, 1982 S12-S LTD, 1956? Maino, 1985 Sagres

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 78 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Randyjawa, are you saying there's no way to make this:
https://s-media-cache-ak0.pinimg.com...eb8e57235b.jpg

Into this:
http://velobase.com/CompImages/RDera...C5CD2251B.jpeg
?

I actually have the derailleur installed on a bike right now, and it works fine. It just can't pivot at the hanger, and I was wondering what I needed to make it do that.
JohndThompson, thanks for the tip. Maybe I just need that washer.

Edit: is there a nut on the back of a direct mount derailleur's bolt? If so, like Randyjawa said, the nut will not fit, but I would think that could be fixed with a longer anchor bolt.

Last edited by Seizedpost; 07-16-16 at 07:30 AM.
Seizedpost 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.