david_m213
New Member
Hi.
I have a trek mountain bike but I have a couple of problems with it.
It has 3 front sprockets and 7 rear ones.
The chain will not move onto the two smaller front sprockets.
The first 4 gears while on the largest front sprocket work perfectly fine. Gears 5, 6 and 7 rattle and slip while I'm pedalling.
By that I mean when I pedal standing up the pedals will suddenly have no resistance and then catch again. Does anyone know what this is?
I know my dérailleurs need setup and I've had a shot at doing it myself but I'm doing it wrong. I've watched instructional videos on youtube. It's a bit embarrassing as I'm used to working on motorcycles but I can't sort the gears on my pedal bike.
Does anyone know where I can get my bike sorted cheaply in the Glasgow area?
Thanks for any help.
I have a trek mountain bike but I have a couple of problems with it.
It has 3 front sprockets and 7 rear ones.
The chain will not move onto the two smaller front sprockets.
The first 4 gears while on the largest front sprocket work perfectly fine. Gears 5, 6 and 7 rattle and slip while I'm pedalling.
By that I mean when I pedal standing up the pedals will suddenly have no resistance and then catch again. Does anyone know what this is?
I know my dérailleurs need setup and I've had a shot at doing it myself but I'm doing it wrong. I've watched instructional videos on youtube. It's a bit embarrassing as I'm used to working on motorcycles but I can't sort the gears on my pedal bike.
Does anyone know where I can get my bike sorted cheaply in the Glasgow area?
Thanks for any help.