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

Rear Derraileur Just Falls Out - Nishiki Pueblo 2015

Notices
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.

Rear Derraileur Just Falls Out - Nishiki Pueblo 2015

Old 10-08-21, 08:42 PM
  #1  
OrangeJoe
Member
Thread Starter
 
Join Date: Jan 2011
Location: Philly
Posts: 32

Bikes: Ikea Xmas 2010 Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 2 Times in 1 Post
Rear Derraileur Just Falls Out - Nishiki Pueblo 2015

Hello Bike forum mechanics. I need some basic derailleur install help.


Context:

I picked up a used Nishiki Pueblo, seller listed it as "needs derailleur" and I saw it had a Shimano Tourney TX35, so in my mind I could 'easily' replace for $25.


Reality:

The derailleur hanger is built into the frame and was bent so I manhandled it back into shape. So far so good.

The rear derailleur itself was bent and I also bent it back (still thinking I can just replace for $20 if I break it). So far, so good.


Problem:

I can hang the derailleur and get the shifts working great but I can't seem to find a way to keep the derailleur on the bike. It looks exactly like this one walmart.com/ip/Shimano-TX-35-Derailleur/16539688 but the smaller bolt goes nowhere since that seems to be a feature for bikes where you hang the derailleur directly from the rear axle, meaning that additional screw to help secure the derailleur is not used in this bike.


If I put the derailleur on the derailleur hanger bolt, it can't possible go tight enough to hold it in place (the bolt is stepped so it's clearly meant to just stop at a certain depth. The derailleur just spins around and falls out after a few minutes. I don't want to blindly buy another derailleur because I can see the same problem occurring with any derailleur in this install unless there is a feature built in to keep it in place.


TLDR;

How am I supposed to "hang" a derailleur so that it does not get pulled out/rotated by the chain tension for bikes like mine which do not hang the derailleur directly to the rear axle (so no extra screw available to help hold it)? Is the version of the TX35 I have wrong for this application?

Maybe other derailleur versions have some sort of lip to prevent the unit from rotating itself off. I'm surely missing something since no install video I've seen even addresses this.

Am I missing a part? Rear looks EXACTLY as the rear of the bike looks in this old/closed ebay listing ebay.com/itm/353168855429?nma=true&si=4oBUdpPludU4wfbN6zsjfufKawY%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2 047675.l2557
If you google for images of the bike use "Nishiki Pueblo 2015" it's the silver/red bike.

Last edited by OrangeJoe; 10-08-21 at 08:48 PM.
OrangeJoe is offline  
Old 10-08-21, 09:01 PM
  #2  
cobba
Senior Member
 
Join Date: Aug 2006
Posts: 1,867
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 166 Post(s)
Likes: 0
Liked 52 Times in 41 Posts
Can you post some photos?
cobba is offline  
Old 10-08-21, 09:34 PM
  #3  
veganbikes
Clark W. Griswold
 
Join Date: Mar 2014
Location: ,location, location
Posts: 10,235

Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26

Mentioned: 42 Post(s)
Tagged: 0 Thread(s)
Quoted: 2991 Post(s)
Liked 2,218 Times in 1,467 Posts
Hopefully you got the bike for less than $20. I have a feeling the bike could use quite a bit of work and can get quite expensive. I would post some photos so we can see what exactly is going wrong but if you are "manhandling" things it doesn't sound good. A hanger is not designed to be man or woman or non-gender binaried handled.
veganbikes is offline  
Old 10-08-21, 09:50 PM
  #4  
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 3,970
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 295 Post(s)
Likes: 0
Liked 120 Times in 92 Posts
This pdf is probably for a more modern version of the Tourney TX35 but look at pages 12-13
to see if you can get a handle on which version you might have.
https://si.shimano.com/api/publish/s...001-24-ENG.pdf

If yours is the horizontal dropout variant (not BMX horizontal however) then you may have some missing parts.
OTOH with a vertical dropout it is possible it is an unthreaded type or that if
threaded they are thoroly stripped out. First figure out which type of dropout
and post some pix.
sch is offline  
Old 10-08-21, 10:17 PM
  #5  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 5,183
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1469 Post(s)
Liked 1,123 Times in 670 Posts
Sounds as if the threads in the derailleur hanger are stripped.
alcjphil is offline  
Old 10-09-21, 12:20 AM
  #6  
OrangeJoe
Member
Thread Starter
 
Join Date: Jan 2011
Location: Philly
Posts: 32

Bikes: Ikea Xmas 2010 Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 2 Times in 1 Post
Originally Posted by veganbikes View Post
Hopefully you got the bike for less than $20. I have a feeling the bike could use quite a bit of work and can get quite expensive. I would post some photos so we can see what exactly is going wrong but if you are "manhandling" things it doesn't sound good. A hanger is not designed to be man or woman or non-gender binaried handled.
Paid $10. Manhandled parts are straight so non-issue, the derailleur even shifts correctly through all gears but I have no intention of riding since I know it only takes a slight tap for it to fall off.

Originally Posted by alcjphil View Post
Sounds as if the threads in the derailleur hanger are stripped.
No, the bolt threads in perfect but the bolt itself is stepped, only half of it is threaded and the rest is much wider so it's clearly not meant to go all the way in. I can't see how that would be designed to hold a part that is being torqued counterclockwise. So either it's broken or I'm missing a replaceable derailleur hanger or I really don't know what I'm doing..

Let me see if I can get a decent picture, warning it looks exactly as the links I posted.

The hanger looks exactly as the picture on the ebay link (it's actually the same bike model/year/color as I have) and the derailleur looks exactly as the one in the Walmart link I posted. Pic here.

Last edited by OrangeJoe; 10-09-21 at 12:29 AM. Reason: Add picture
OrangeJoe is offline  
Old 10-09-21, 12:31 AM
  #7  
OrangeJoe
Member
Thread Starter
 
Join Date: Jan 2011
Location: Philly
Posts: 32

Bikes: Ikea Xmas 2010 Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 2 Times in 1 Post
Originally Posted by sch View Post
This pdf is probably for a more modern version of the Tourney TX35 but look at pages 12-13
to see if you can get a handle on which version you might have.
https://si.shimano.com/api/publish/s...001-24-ENG.pdf

If yours is the horizontal dropout variant (not BMX horizontal however) then you may have some missing parts.
OTOH with a vertical dropout it is possible it is an unthreaded type or that if
threaded they are thoroly stripped out. First figure out which type of dropout
and post some pix.
I added pic of my actual bracket and derailleur. Page 12 of your link makes sense, the shape of the derailleur couples with the shape of the hanger to prevent the derailleur from rotating. I'm beginning to think this deraileur was an improper replacement.

Can any of the bike mechanics figure out if that (the TX35 in the picture) should mate with that frame/derailleur hanger?
OrangeJoe is offline  
Old 10-09-21, 04:34 AM
  #8  
cobba
Senior Member
 
Join Date: Aug 2006
Posts: 1,867
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 166 Post(s)
Likes: 0
Liked 52 Times in 41 Posts
Your derailleur has the wrong type of attachment on it.

You have a derailleur with a dropout claw but you need a derailleur that attaches directly to the derailleur hanger.

https://bike.shimano.com/en-EU/produ...-TX35-SGS.html


cobba is offline  
Likes For cobba:
Old 10-09-21, 04:43 AM
  #9  
JoeTBM 
Droid on a mission
 
JoeTBM's Avatar
 
Join Date: May 2018
Location: Palm Coast, FL
Posts: 819

Bikes: Diamondback Wildwood Classic

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 252 Post(s)
Liked 184 Times in 131 Posts
You have a claw type DER where the claw is not removeable. The hanger is the claw but your bike has a built is screw hanger. The screw You are using for the hanging is really part of the proper type DER, see image below. The claw type DER is meant for an elongated dropout and used with a nutted axle not the QR axle you have there.

__________________
JoeTBM (The Bike Man) - I'm a black & white type of guy, the only gray in my life is the hair on my head
www.TheBikeMenOfFlaglerCounty.com




JoeTBM is offline  
Old 10-09-21, 06:10 AM
  #10  
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 3,970
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 295 Post(s)
Likes: 0
Liked 120 Times in 92 Posts
IIRC there is a T-nut that comes in from the inside of your hanger and engages the mounting bolt of the
derailler. If you can locate such a nut you should be able to use the standard RD such as JoeTBM
illustrates. Nut is 'standard', ie for bicycles though rarely used as the vast majority of frames have
threaded vertical dropouts these days or in decades past horizontal dropout with a threaded RD mount.

I believe such as these: https://wheelsmfg.com/ds-2.html
available for less elsewhere.

Last edited by sch; 10-09-21 at 06:19 AM.
sch is offline  
Old 10-09-21, 10:04 AM
  #11  
OrangeJoe
Member
Thread Starter
 
Join Date: Jan 2011
Location: Philly
Posts: 32

Bikes: Ikea Xmas 2010 Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 2 Times in 1 Post
Guys I think that's exactly it! I'll go to LBS to see if they happen to have the suitable RD-TX35, else I'll order online.

Current tally:
  • $10 bike
  • $12 QR rear axle (kit included both QRs but bike already had factory front QR wheel)
  • $6 Shimano shift cable
  • $9 Tri bike tool (all my hex tools where in inches) Already well used adjusting wife's Cannondale F6
  • 4+ Hours trying to figure out how everything should work, cleaning and oiling
  • 6 involuntary blood samples from punctures from the frayed shift cable

Not too bad even as just a project to practice bike repair skills, thanks again.
OrangeJoe is offline  
Old 10-09-21, 12:41 PM
  #12  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,198

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1524 Post(s)
Liked 813 Times in 593 Posts
Often you can figure things out by looking at another bike. (or 2)
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 10-15-21, 01:03 PM
  #13  
OrangeJoe
Member
Thread Starter
 
Join Date: Jan 2011
Location: Philly
Posts: 32

Bikes: Ikea Xmas 2010 Bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 2 Times in 1 Post
To close this out, I received the TX-35 now with the appropriate mounting option. Took all of 5 seconds to install, it even included the bolt. I just need to tweak it to shift correctly (will need to wait until the weekend) and should be set.

Updated tally:
  • $10 bike
  • $12 QR rear axle (kit included both QRs but bike already had factory front QR wheel)
  • $6 Shimano shift cable
  • $20 Shimano TX-35 with correct mounting option
Worth it so far if only for the chance to practice the bike mechanic skills. I took off tool costs as those are already in use on wife's Cannondale F6.
OrangeJoe is offline  
Likes For OrangeJoe:

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 - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.