All Questions
Tagged with derailleur shifting
8
questions
5
votes
2
answers
3k
views
(Automatic Bike Project) amount of torque required to change gears?
I am planning to build an electronically controlled automatic bike transmission for my senior design project. I'm personally more of an electrical guy, so dealing with the mechanics is somewhat new to ...
- 153
3
votes
3
answers
382
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 ...
- 133
0
votes
3
answers
2k
views
gears overshifting issue
As I have explained in my previous post here I have changed my rear shifter cable and housing. But I'm still having issues with shifting gears smoothly.
It overshifts at particular gear combinations ...
- 247
37
votes
13
answers
24k
views
Is there such thing as an automatic transmission for bikes?
Has anyone ever designed or manufactured an automatic transmission (or automatic shifter?) for cycling?
I imagine such a device would automatically change the gearing to allow the rider to maintain ...
- 1,321
6
votes
1
answer
7k
views
How to prevent shifting issues due to derailleur or cables freezing in cold weather
It's been fluctating in temperature between 0F and 20F in my area. I've been riding my 1x9 geared mountain bike to and from work. However, due to the cold weather, I'm having issues shifting.
It ...
- 18.3k
2
votes
1
answer
3k
views
Front Derailleur Chainring Size Tolerance
I'm rebuilding an old bike and have an existing crankset with 52-42-30 chainrings. I'm looking for a front derailleur. Most of the triple front derailleurs I've come across say they don't support a 50 ...
- 21.9k
1
vote
1
answer
883
views
One extra position on front derailleur besides trim
After I changed shift cables, I have 4 positions on my front derailleur. WTF?
I have a double chainring. I have a trim position as well, but after shifting to the big chainring, I can still move the ...
- 111
1
vote
3
answers
140
views
My bike shifting won’t surpass 6
I own a Scott Aspect 740. On the shifter it says it is on gear 7, 8 or 9 however in reality on the rear derailleur the chain is only on 6 and won’t go past this.
I’m looking for a fix as it is very ...
- 11