Tagged Questions

1
vote
3answers
159 views

Gear up-shift not smooth

When I am pedaling hard and shift to a larger sprocket, the shift is not smooth or sometimes doesn't happen at all. Sometimes even double up-shifts don't work. There is no problem shifting when I test ...
1
vote
0answers
155 views

skating on my cassette [closed]

I recently replaced the entire drive train (ie. chain rings, cassette, chain) of my old steel road bike, which has a shimano 105/600 mixed group (14 sp). While I did this work, I also serviced my rear ...
15
votes
5answers
1k views

Is there such thing as an automatic transmission for bikes?

Has anyone ever designed or manufactured and automatic transmission (automatic shifter?) for cycling? I imagine such a device would automatically change the gearing to allow the rider to maintain ...
0
votes
2answers
197 views

Unable to change from 14th to 7th

I've got a bike that I have had for about 8 weeks and it has already been back to be serviced twice. It's just returned from the second service and I've noticed that it is not shifting from 14th to ...
3
votes
3answers
224 views

Gear shift adjustments

I recently had to replace the shifters on my bike. The replacement was easy enough, but now when I shift the derailleur either jumps too far or too short. I've tried using the adjustment screws on the ...