All Questions
19 questions
24
votes
2
answers
2k
views
Selecting the right crank length
What is the best way to determine the correct crank length for my height and more specifically my leg length?
- 353
22
votes
7
answers
4k
views
Are Z-shaped cranks a good idea?
I've stumbled across this kickstarter project, which promotes an original shape for cranks:
They claim a wider arc of useful push during rotation. While their main point is rendered moot by clipping ...
- 685
13
votes
4
answers
10k
views
Differences between Biopace and Rotor cranks
On mountain bikes of a certain age, "Biopace" chainrings are ubiquitous. These chainrings are (purposely) not circular. It seems that most people today agree that Biopace rings didn't live up to the ...
- 1,422
7
votes
1
answer
264
views
The spin of crankset creates periodic sideways wobble of the whole bike. What is the problem?
I have enountered a strange problem with a fixed gear build: when the wheel/crankset spin, the crankset's rotation creates a periodically pulsating sideways wobble on whole the bike. It can be felt ...
- 573
7
votes
3
answers
2k
views
5 arm cranksets versus 4. Which is better and why?
I'm looking to buy a Sora triple crankset. Shimano make two types, one eith 5 arms, and the other with 4 arms1. Which should I get and why would that be a better choice? I'm a slow-ish rider. I'm 50 ...
user41329
6
votes
2
answers
36k
views
Why does my non-drive side crank arm come loose?
I tighten the bolt super hard. Ride for a while. Then it comes loose again. I don't know if its my BB or the bolts. How can this be fixed??
- 61
5
votes
3
answers
342
views
High-end components [closed]
I'm wondering if anyone knows of any high-end components that are like Paul components. Not the pro-peloton stuff like SRAM and Shimano, but the, dare I say hipster components.
I'm looking for ...
- 593
4
votes
3
answers
2k
views
Does the front derailleur limit chain ring size?
Does the front derailleur have limits to which size chain rings can be used?
I have a groovy old 1988 Schwinn Prelude and for the most part it does just what I need. However there are some steep ...
- 89
4
votes
1
answer
187
views
Electric road bike - Compatibility questions
I am building an ebike on a road frame. I am using a Bafang G310 rear hub motor & 8 Speed Shimano cassette. I plan to use a long MTB rear 8 spd derailleur (either Acera or Alivio). For my crankset ...
- 143
3
votes
1
answer
832
views
Fuji bolt fell out please help!
Hi all. I have an old Fuji and there's a bolt that holds the crank in place. It fell out and is lost unfortunately and I am looking for a new one. Does anyone have any ideas? I'd really appreciate it!
3
votes
2
answers
11k
views
Can pedals not fit the crankset?
I just ordered and received my bike with FSA Tempo CK-200 crankset and Shimano Saint MX80 pedals (really good deal).
Just received and it seems that they do not fit with crankset! The spindle on ...
- 483
2
votes
1
answer
281
views
What is this crank part called?
I recently had a Shun SS-8001 crankset fail. When taking it apart, I saw that the right pedal has a sort of stop ring that prevents the pedal, presumably, from unscrewing itself:
Now I need to find a ...
- 1,067
2
votes
1
answer
121
views
crank arm with 15mm diamond holes
I have a stationary bike that was given to me. The threads for the pedals are stripped, so I was trying to replace the crank arms.
Both arms are diamond hole types, I managed to get them off, but I ...
- 123
2
votes
2
answers
214
views
Did I choose the right bottom bracket?
This is my bicycle.
I mounted a new Thompson 124mm bottom bracket (the narrowest of this kind I could find) and a new single-ring sqaure-tapered crankset.
When set as in the pictures, there is a ...
- 21
2
votes
1
answer
2k
views
How do I figure out what crankset replacement will fit my derailleur?
I have a bike with a Shimano FC-M560 crankset in the front which I want to replace. I naively bought a Shimano FC-TY301 crankset, thinking that there's norms and that 3-speed cranksets are more or ...
- 415
2
votes
1
answer
142
views
Changed chainset, bottom bracket, wheels and cogset and find these parts left over, and the rear wheel clicking?
I just changed the crankset, bracket, wheels and cogset (my first bike repair obviously) on my specialised tricross, and after my victory tea realised I had these three bits left over, and not sure ...
- 131
2
votes
1
answer
884
views
Cannondale Trail SL 3 component upgrades
I have a 2013 cannondale trail SL 3 and some parts have been worn and look beat up so I'm planning to replace them. I was wondering if I can use a 10-speed rear derailleur on a 9 speed cassette and ...
- 31
0
votes
2
answers
1k
views
How to avoid getting swindled when buying used cranks?
I'm looking for a cheap, used set of cranks for a bike that was fished out of the garbage :)
Because the cranks won't be on a bicycle when I go buy them, how can I tell if they're bent or not?
I'm ...
- 5,735
0
votes
1
answer
476
views
Crankset for SRAM Apex Groupset
I have SRAM Apex Shifters, FD, RD, and Brakes.
Can I use a SRAM Force BB30 Crankset?
Thanks
Paul
