Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the February Giveaway for a Reflective Backpack & Spine Protector from RiderBag


Problem with my Front Derailleur on my Bike
#1
I've got a problem with the front derailleur on my 21 speed mountain bike. The bikes chain keeps moving to gear one or even slipping off the chain entirely on the front when I try to ride it. I use this bike to get around my college campus, so I use this bike every day, so I need this bike to work.

The bike in question is a 1996 Marin bolinas ridge mountain bike I got at a garage sale years ago for $25. The bike has been working great so far, except for today.

After doing some research my bike uses a Shimano atlus bottom bracket Front derailleur. I think I figured out the problem, I just need to know what tools I will need to fix this or if it's even worth my time.

I believe the problem is the bottom bracket for the derailleur is not flush right up against the bike frame, so the whole front derailleur is at a weird angle. The derailleur cage then pushes the chain to a low gear of even off the gears entirely.

Here is the bottom bracket at the weird angle:

https://imgur.com/CdmUnEn

If I push my hand on the derailleur and make the bottom bracket totally flush, the cage no longer hits the chain and the bike shifts gears normally.

https://imgur.com/CvLAw7K

Also, this is my ghetto way of solving this problem for now:

https://imgur.com/eIE8HUt

Since I am in college, I have no tools whatsoever. I think I have a screwdriver in a drawer somewhere but that's it. All my tools are at my parents house right now. Now I had two things on hand that I could use to fix this, a wood chip and some tape. I shoved the wood chip in-between the derailleur cage to force the cage out of the way, so the cage no longer hits the chain. This will probably only last a few days, and Obviously I can't shift the front gears anymore.

How can I fix this? Also what tools will I need to fix this? Any help would be very much appreciated.
  Reply
#2
I'm going to say up front that I have no idea how you can fix your bike.

I just wanted to give you props for the wood chip solution. I've been experimenting with elastic bands and a golf pencil on my handlebars to keep my malfunctioning left thumb-shifter set to high gear - for I, too, am an impoverished university student with no money for tools or shop repairs Smile
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
What size bike should I get?
Yesterday 03:44 PM
How to stay safe while biking?
Yesterday 01:28 PM
Fausto Coppi Gilco frameset
03-04-2021 10:23 PM
Freehub body change compatibility
03-04-2021 12:17 PM
What kind of frame do I have here?
03-03-2021 01:07 PM
Sensah Empire road groupset
03-03-2021 08:47 AM
In need of a Hybrid of Road bike for com...
03-03-2021 08:40 AM
2021 Pro Road Cycling
03-03-2021 08:35 AM
Looking for bikes on Craigslist
03-02-2021 10:14 PM
Can you help me find out which Koga Miya...
03-02-2021 03:10 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
16 posts
no avatar 2. Painkiller
9 posts
no avatar 3. Criminal
7 posts
no avatar 4. ILv2MTB
7 posts
no avatar 5. JoJoJo
4 posts