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

Wheel / rear derailleur help...

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.

Wheel / rear derailleur help...

Old 06-07-20, 10:23 AM
  #1  
Microfiche
Newbie
Thread Starter
 
Microfiche's Avatar
 
Join Date: Apr 2017
Location: Kelowna, BC, Canada
Posts: 19

Bikes: Giant Defy Advanced 3, Specialized Crosstrail

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 2 Times in 2 Posts
Wheel / rear derailleur help...

Preface - I don't know enough about my equipment - please be kind!
I am trying to provide as much info as I can so I can be schooled.

I have a Specialized Crosstrail that I use when I can't/won't take my Giant Defy Advanced 3 road bike out, usually late fall to early spring.
During those times, my road bike is mounted in the basement on a Tacx Vortex trainer.
I bought a cheap Alexrims ERTO 622 x 14 rim with a 700 x 23C trainer tire that I swap out for the S-R2 on the road bike when I put it on the trainer.

I decided this year to try to run the Specialized on the trainer while the road bike was out, but when I went to switch wheels to try to mount it on the trainer, I noticed that the 622 x 23 rims and 700x38C tires were too big to fit the trainer, so first I tried to mount a new 700 x 25C trainer tire on the existing rim. I could (just barely) get it to fit but it was so much trouble I guessed that maybe it wasn't meant to work so I gave up.

Then I tried using the cheap rim/trainer tire (noted above) that I use on the Giant onto it.
I could mount it, but I couldn't get it to shift properly, so pulled that off and put the original back on.
Then, when I put the original tire back on, I noticed that it looked (to me) like the rear derailleur was bent (photos.app.goo.gl/RqeAGxcZjkVESSCe8)
So now I don't know if the problem is the rear derailleur or my stupidity surrounding tire and rim sizes...

So a couple of questions for those more knowledgable than i (bar set pretty low ):
  1. Does it look like my rear derailleur is bent? From what I can see by eye - the hanger doesn't look bad.
  2. Should I be able to swap the trainer tire and rim between those 2 bikes?
I can't post a pic for some reason so it is here: photos.app.goo.gl/RqeAGxcZjkVESSCe8
Microfiche is offline  
Old 06-07-20, 10:36 AM
  #2  
Microfiche
Newbie
Thread Starter
 
Microfiche's Avatar
 
Join Date: Apr 2017
Location: Kelowna, BC, Canada
Posts: 19

Bikes: Giant Defy Advanced 3, Specialized Crosstrail

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 2 Times in 2 Posts
Here is an album with more pics: photos.app.goo.gl/5XSi7CG5qqy7U2KA8

Last edited by Microfiche; 06-07-20 at 10:37 AM. Reason: typo
Microfiche is offline  
Old 06-07-20, 11:45 AM
  #3  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,782

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1884 Post(s)
Liked 655 Times in 383 Posts
Not really enough info, like the year and exact model of each bike.

!. Rear cage looks bent, or hanger is bent, need better picture, and even good picture you cannot tell for sure.
2. Are you trying to swap tire on wheel or trying to swap wheel. Can't tell from your explanation. You don't swap a rim, but the whole wheel.
Possibly the Crosstrail dropout in 135mm and the Giant Defy is 130mm width.

Anytime you swap a rear wheel it needs to be readjusted.
trailangel is offline  
Old 06-07-20, 12:13 PM
  #4  
Microfiche
Newbie
Thread Starter
 
Microfiche's Avatar
 
Join Date: Apr 2017
Location: Kelowna, BC, Canada
Posts: 19

Bikes: Giant Defy Advanced 3, Specialized Crosstrail

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 2 Times in 2 Posts
Thanks - road bike is Giant Defy Advanced 3 bought in July 2016 and MTB is Specialized CrossTrail Disc – Mechanical bought April 2018 (2019 model p/n 82418-7403)
I am trying to mount the wheel that I use on the Giant when I am using the trainer onto the Specialized.
I know that adjustments are required when the wheel is swapped, as I have to adjust when I swap the wheel on the Giant.
However, I was completely unable to get that trainer wheel adjusted when I put it on the Specialized.
I was able to get the original stock wheel to work when I put it back on.
The rim and tire sizes were provided in case it makes a difference.

Last edited by Microfiche; 06-07-20 at 12:54 PM. Reason: update
Microfiche is offline  
Old 07-05-22, 08:22 AM
  #5  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 5,009
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1400 Post(s)
Liked 985 Times in 597 Posts
How many cogs does the Crosstrail have on its cassette? How many on your trainer wheel? If they are different you will never get that trainer wheel to shift properly unless you swap the cassette as well
alcjphil is offline  
Likes For alcjphil:
Old 07-09-22, 02:44 PM
  #6  
jo_lacs
Newbie
 
Join Date: May 2015
Location: Hampton Roads
Posts: 43
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Liked 6 Times in 4 Posts
+1 Anytime you swap a rear wheel the rear derailleur needs to be readjusted for that cassette/freewheel.
Your photo shows the derailleur on the largest cog (7 speed?), shifting to the smallest cog might help to see better if the derailleur is bent or not.
jo_lacs 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 - 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.