New: Take part in the April 2020 Giveaway for a brand new GIORDANO™ bicycle

Welcome guest! Register or sign in to participate in the cycling discussions.


Mongoose Gear Shifter/V Brake not going back past 4
#1
Hi, I'm new to the forum and this is my first post. I don't quite know how to explain it but will try to do the best I can.

I have a Mongoose mountain bike which I picked up for nothing. It had 2 broken spokes which I fixed quite easily. Bike works really well apart from the gears for the back sproket. It will change from 4 to 7 and back from 7 to 4 but then doesn't go any further. I have uploaded a Youtube video

http://www.youtube.com/watch?v=ht5nzhGsk88

I don't know what the parts are but there is a little cog that works like a ratchet. Once this gets to 4 it reaches the max for the lever. i.e. there are 3 more clicks it can go, but the lever has reached its max 'push'. I hope the video explains better and I hope someone can tell me if this can be adjusted or if I have to buy a new part.

Thanks.
  Reply
#2
How are you rotating the pedals when you are shifting? It is not obvious in the video that you are.

Derailleur systems REQUIRE that the chain and cogs be moving when gears are changed. If not, it will shift a gear or two each side of nominal, then jam. Any attempt to move beyond that point results in a damaged shifter and damaged derailleur - repair is not possible in that situation.
Nigel
  Reply
#3
Hi Nigel, thanks for the advice. I wasn't rotating the pedals in the video but prior to taking the video was riding the bike testing the gears. The situation was the same, I couldn't change past 4 back to 1. I dismantled the shifter today (don't know what I was going to achieve doing this), but after I put it back together it was worse!! Now the shifter lever is stuck and doesn't change at all. Back to the drawing board, might get a new part or take it to a bike shop. Thanks again.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
Ad

[-]
10 Latest Posts
Wheels too big for frame?
Today 09:39 PM
Giordano Bicycles | April 2020
Today 03:59 PM
Bianchi folding bike
Today 10:02 AM
New Bike Rider
Today 01:54 AM
One expensive lock vs two cheaper locks?
Today 12:38 AM
Trek 6500 ZX Update
Yesterday 11:35 PM
Using Evapo-rust for bolts
Yesterday 10:15 PM
Gear shift is stuck!
Yesterday 05:37 PM
Wheels stolen off my Nishiki Performance...
Yesterday 10:01 AM
New Member Intro
Yesterday 12:12 AM

[-]
Ad

[-]
Top 5 Posters This Month
no avatar 1. G_M
17 posts
no avatar 2. Jesper
14 posts
no avatar 3. CharleyFarley
10 posts
no avatar 4. JoJoJo
8 posts
no avatar 5. 8jk8
8 posts