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


Question about gear changing
#1
Hi, whenever I've got a 6 speed mountain bike, but whenever I switch into the lowest gear, the chain slips off of the freewheel into the frame and is a paint to pull out again. When I put the bike up into the stand, it switches to lowest gear fine without coming off at all. It seems the pressure of my feet on the pedals makes it slip off. Just wondered if you had any suggestions? thanks.
  Reply
#2
The lowest gear is the largest cog in the back, so if the chain went off there it would go into the wheel, not the frame. Is it coming off the largest rear cog or the smallest, or off the front? The pressure of your feet should not make a difference. How old is the bike and when did the problem start - any accident or maintenance just before then?
  Reply
#3
Check the limit screws and to see if the derailleurs are bent, aligned correctly. It's not uncommon for a bike to behave better in the stand than on the road. But if you get the adjustments right, it should be fine for either.
  Reply
#4
(10-14-2014, 06:00 PM)cny-man Wrote:  The lowest gear is the largest cog in the back, so if the chain went off there it would go into the wheel, not the frame. Is it coming off the largest rear cog or the smallest, or off the front? The pressure of your feet should not make a difference. How old is the bike and when did the problem start - any accident or maintenance just before then?

Yea sorry I meant it's coming of off the largest cog in the back and into the wheel, it slides right in and jams behind the freewheel. It doesn't do it in the stand, it shifts up and stays in the highest gear but as soon as Im on it and shift up it comes off into the wheel. The bikes about 2 years old and the problem started about 6 months ago, since then I've never used that gear until recently and it happened again.

Nope, no accidents however the rear derailleurs has always had a wobble to it, it doesn't sit tight. I did replace the freewheel a couple of months ago and brought a new chain. I brought a 7-speed chain and the freewheel is 6 speed but they said that would be okay, thanks.
(10-14-2014, 06:00 PM)cny-man Wrote:  The lowest gear is the largest cog in the back, so if the chain went off there it would go into the wheel, not the frame. Is it coming off the largest rear cog or the smallest, or off the front? The pressure of your feet should not make a difference. How old is the bike and when did the problem start - any accident or maintenance just before then?

Okay thanks. I will check the allignment of the derailleur, it works fine in all the other gears, its just on the largest cog for some reason. Thanks
(10-14-2014, 06:00 PM)cny-man Wrote:  The lowest gear is the largest cog in the back, so if the chain went off there it would go into the wheel, not the frame. Is it coming off the largest rear cog or the smallest, or off the front? The pressure of your feet should not make a difference. How old is the bike and when did the problem start - any accident or maintenance just before then?

Okay thanks. I will check the allignment of the derailleur, it works fine in all the other gears, its just on the largest cog for some reason. Thanks
(10-15-2014, 11:54 AM)DaveM Wrote:  Check the limit screws and to see if the derailleurs are bent, aligned correctly. It's not uncommon for a bike to behave better in the stand than on the road. But if you get the adjustments right, it should be fine for either.

Okay thanks. I will check the allignment of the derailleur, it works fine in all the other gears, its just on the largest cog for some reason. Thanks
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
12,568
08-12-2013, 02:34 AM
Last Post: Joe_W
 
8,484
12-19-2011, 11:14 AM
Last Post: ghost
 
10,832
04-20-2010, 01:33 PM
Last Post: GeorgeET
 
Guest
9,292
02-09-2010, 08:20 PM
Last Post: Surly LHT

Forum Jump:

[-]
10 Latest Posts
Newbie
Yesterday 11:34 PM
What are the pros and cons of clip-on pe...
Yesterday 11:33 PM
Tubeless vs. tubes: What are the pros an...
Yesterday 11:03 PM
With several methods of shipping being p...
Yesterday 04:12 PM
Close call yesterday! Why are brakes not...
Yesterday 07:01 AM
E-Bikes: The Game-Changer for Cyclists
Yesterday 01:33 AM
Cycling is Anti-Aging, But There's a Cat...
Yesterday 01:09 AM
Wishing you an Awesome 2025 & many fun r...
Yesterday 12:49 AM
Tips for Cyclists
Yesterday 12:32 AM
Colnago Steelnovo, a 3D printed steel bi...
02-10-2025 10:53 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Flowrider
19 posts
no avatar 2. GirishH
15 posts
no avatar 3. SPINMAN
14 posts
no avatar 4. meamoantonio
14 posts
no avatar 5. enkei
11 posts