Questions tagged [crankset]

The crankset is the combination of components that convert motion from the rider's leg movements into rotational motion to drive the chain and propel the bike. The crankset includes one or more chainrings (sprockets) and the two cranks, or arms, to which the pedals are attached.

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3answers
278 views

What are the advantages and disadvantages of the different chainset designs?

Over the decades there were many different crankset and especially spider designs: 4, 5 or 6 arm spiders, symmetric or assymetric, different BCDs, direct mount and probably many more. When looking at ...
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Which kind of crank arm for my bottom bracket

I'm trying to make my indoor bike smarter by fitting a crank arm power meter. The bottom bracket is a Tange bc 1.37x24t. Apparently it is of the English kind which is the most common. Since there are ...
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Alternatives to Crankset Shimano M523 Octalink 40-30-22T

I have recently purchased a Merida 2015 7500 One-Twenty 3x10. Link to bike specs: http://online.fliphtml5.com/pvouz/azox/#p=12 The crankset chain rings are very worn and need replacing. More Pictures ...
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Bottom bracket spindle length

I have a square taper (JIS) Shimano UN-55 bottom bracket with dimensions 68mm (shell width) and 110mm (spindle length) on my single speed (chainline 42-44mm). Can a set of Stronglight JIS track crank ...
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1answer
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Weird sounds from Sram GX crank / shifters?

When moving the chain backwards while bike is standing, I hear some weird sounds.. I made a playlist on youtube and would greatly appreciate some help :(. Video titles give more details. Should it ...
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Finding the right bottom bracket crankset combo

I need to change my bottom bracket and crankset. But I'm not sure what to buy. I know it's an eccentric botton bracket and I still need one because I use the internal gear hub Shimano Alfine. My ...
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68 views

Upgrading the crankset - Scott Aspect 960

First of all a big thank you for everybody who can help out with the question! The bike is Scott Aspect 960: https://www.scott-sports.com/gb/en/product/scott-aspect-960-red-bike Currently the highest ...
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2answers
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Crank arm loose (squared taper). Can it be fixed?

My problem is that my squared taper crank arm keeps on coming loose no matter how hard I tighten the bolt - it also starts creaking. Here’s a video of the problem https://giphy.com/gifs/...
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CDF touring build with mtb crankset and road shifters

I want to build a genesis croix de fer bike. The usage of this bike will be touring, with rear and front panniers, for an approximately 6 month autonomy travel. I am starting from zero, so there are ...
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49 views

Italian bottom brackets and modern cranksets - a compatibility guide?

I have an Italian frame (presumably a Moser) which I chose to repurpose as a single-speed/fixie with parts from another Single-speed/fixie of mine, with the exception of the bottom bracket and ...
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1answer
53 views

Bontrager crank removal

I'm struggling to remove the cranks from my bike. I have a 2005 or 2006 Trek 2100 road bike with Bontrager Race cranks (triple chainring, marked "9 Speed" and "ISIS Drive"). It ...
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Changing crank set

I’ve managed to totally knacker the thread on my crank due to a poorly fitted pedal and it’s looking like a new crankset is required. Will I also have to change the cassette and chain?
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Shimano EX Crankset Pedals Compatibility [duplicate]

I recently bought an old Shimano EX crankset, which I'd like to mount new clip-on pedals to (Shimano Dura-Ace PD-R9100). Does anyone have any experience with using new clip-on pedals on vintage cranks?...
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Replacement crankset for MegaExo BB 24mm on 8 speed bike

I have a Specialized Allez E5 from 2017 with Shimano Claris (8 speed) and I'm looking to replace my crankset. I believe this is my current crank. My specific and potentially stupid question - am I ...
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Standard to compact swap

I am looking to swap from a Shimano 105 standard 53-39 crankset to a 50-34 compact crankset. My question is: will I need to adjust the height of the derailleur when changing to the new crankset? And ...
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Should square taper cranks be greased before installation?

There’s a fierce debate over whether the interface between a square taper spindle and crankarm should be lubricated or not. Adding to that, everyone seems to have their own take on the issue. Here’s ...
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1answer
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Can I fit a RaceFace crankset with a SRAM bottom bracket (and how do I know)?

I have a bike with a SRAM BB https://www.sram.com/en/sram/models/bb-gxp-a1 I’d like to fit these cranks https://www.chainreactioncycles.com/race-face-ride-narrow-wide-10sp-mtb-chainset/rp-prod113370 ...
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1answer
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Clicking noise from drivetrain under load

So when I pedal under high pressure, one crank arm loudly clicks one time at position 1 or 2 (non-repeatable click) and when I continue, the other arm does the exact thing at the same position. The ...
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3answers
154 views

How do you compare chainsets on MTB? Which is better?

I'm looking at getting a decent mountain bike that will probably spend quite a bit of time on the road. I found that the most common types of chainsetsare either: Shimano Altus 2x9 Shimano Deore 1x10 ...
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1answer
72 views

What bike crank do I have and how can I re-attach?

So during quarantine i've picked up a hobby of bike riding. Recently while going for an afternoon bike ride I noticed one my pedals were shaking but I just ignored it. When I was finished riding I ...
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Custom/modified Drivetrain 2x/3x Considerations and Planning

Planning a drivetrain setup for a new bike: Currently running old Shimano 3x9 44/32/22t on 11-34t, which gives me 19-115 gear-inches (about 620%). I used 29x2.0, 170mm crank to calculate my current ...
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What if both wheels were powered by pedalling?

Only the rear wheel of a bike is connected to the drivetrain in order to propel the bike forward. I assume the choice of rear wheel instead of the front wheel is for stability (e.g. avoiding '...
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1answer
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Left-right play at bottom bracket

Today I noticed that there's a left-right play at the bottom bracket of my bike. You can see a video below. On the video, it looks like I am moving it with force, but I am not: it slides with ease, ...
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2answers
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Change Shimano Ultegra R8000 crankset

I'm considering getting a Canyon Endurace which use a 52/36 Shimano Ultegra R8000 crankset. As I plan using the bike for long, multi-days ride it would make sense for me to have an easier ratio. Is it ...
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564 views

Change Shimano GRX 1x to 2x

This may be a stupid and uncommon (definitely seems so) question. Also forgive me for potential etiquette violations, as this is my first one on bike stackexchange. I'm thinking about buying a gravel ...
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3answers
203 views

Measuring BCD & choosing right chainset

I bought a used bike whose chain keeps slipping, and I believe it is because either the chainring or the bottom bracket is bent. I tried to show this as best as I could in the below pictures. I am ...
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0answers
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Knee will only bend 90 degrees [duplicate]

My left knee will only bend 90 degrees. This makes it impossible to ride my bike as the knee needs to bend more than this on the upstroke. Is there a way to shorten the stroke circle so the knee will ...
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Can I swap in a 2x Shimano 600 FC-6400 crankset to replace a 3x RX-100 crankset?

I have a 2x Shimano 600 FC-6400 crankset. Can I just replace the 3x RX-100 crankset? Will I need a new BB? thanks in advance!
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1answer
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Converted to drop bar and dual brake/shift levers and problems with front derailleur

Hoping someone can help out here. I had originally had a 2016 Kona Deluxe hybrid. Over the years I changed to bullhorn bars with the original shifters etc. I love this bike, but I wanted drop bars and ...
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1answer
82 views

Conversion to single speed: crankset specs?

I picked up a cheap frame recently which came with bottom bracket, 3x speed chainring, crank arms and pedals, handlebars, forks, and front & rear rim brakes. I've removed the chainring and right ...
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1answer
69 views

Crankset compatibility: Specialized Stout XC vs. SRAM GX 1000 GXP

I need to replace the crankset on my Specialized Rockhopper 29 Expert (year 2017) due to damage. I would prefer not to replace the BB to minimize the cost/effort. The original crankset is described by ...
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1answer
63 views

Ultegra 6800 chainrings and Claris r2000

Does claris R2000 crank arms can fit ultegra 6800 chainrings?
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2answers
987 views

Replacing a crankset after 1 hour!

First time here! My brand new bike arrived this evening and I’ve broken it with an hour. It’s a Vitus Nucleus 27 VR Bike (Altus 2x9) 2020 I took it out and about 50 mins into the ride I noticed the ...
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1answer
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Left crankshaft arm broken - can I use a different manufacturer?

Good evening, My left crankshaft broke on my Voodoo Masala hybrid bike (Halfords). It has a Suntour XCT9 crankshaft. Frustrating it’s cheaper to buy and entire replacement Crankshaft than the left arm ...
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1answer
103 views

SRAM BB30 cranks - how to remove crankarm from spindle?

I have SRAM S2200 (X.0) cranks with a BB30/PF30 spindle. They are 3-piece ones, with the self-extracting mechanism on the right (drive) side, and a regular non-puller bolt on the left side. I want to ...
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1answer
74 views

What is the difference between 9sp and 10/11sp cranks/chainrings?

I have a 9sp setup I’m very committed to, mostly because I can’t find 10/11sp indexed downtube shifters (Dia Compe makes a non-indexed 11sp and that seems to be it). I want a new crank with swappable ...
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1answer
111 views

Crank Length 165mm or 170mm? mixed views

I have been doing a lot of research into crank length, I have a 172.5mm crank which I find my knees come up too high, and sometimes I get a bit of back pain. I have a Scott Speedstar 2017. I am 175cm ...
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1answer
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What kind of bb is this?

not sure what kind of bb mount this is for a crank? It’s like this on both sides
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1answer
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Chainring loose around drive-side crank arm / axle

The splined thing in the picture moves very slightly in relation to the chain rings - it seems to be worn. I don't know how to remove it, or if it is even supposed to be removed. This is an old bike ...
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3answers
397 views

How can I know if a crankset is compatible with my bike without physically seeing it?

I'm using Shimano Tourney TX right now and would like to upgrade. I can only shop online and can't visit physical bike shops. I'm leaning towards SORA R3000 but I'm not sure if it has the same BB size ...
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2answers
100 views

Can't thread crank puller

I'm in the process of replacing crankset and bottom bracket on my road bike - square taper type spindle. Bike is only four years old and bought from new, so all original parts with threads in good ...
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1answer
79 views

Replacing cranks on SRAM Force AXS

I've purchased some shorter cranks for my SRAM Force AXS eTap bike, and I'm trying to decide between learning and swapping them myself vs. bringing it into a LBS. Pros of doing it myself: learn for ...
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1answer
58 views

Bottom bracket and crank confusion for dirt jumper

I'm looking to build an NS Decade dirt jump bike. I'm super confused about purchasing the right bottom bracket and crankset. The frame specs says 73mm threaded. Ideally, I'd like to use 30mm Raceface ...
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3answers
793 views

Two broken teeth in Shimano 105 crankset

I have just received my new 105 7000 cranksets from a reputable seller in Aliexpress and I believe there are two broken teeth perhaps cause by mishandling of the shipment company or poor wrapping of ...
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1answer
37 views

Replacement from 3x Sugino cranks to any Shimano 3x

Specialized Sirrus with carbon forks, 9s peed Tiagra rear, 3sp front.
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3answers
589 views

What can I do to fix or replace this broken axle?

I cased a jump badly and I broke either my bottom bracket or crank, I’m not sure which. What can I do to fix or replace this? Picture is of my broken bottom bracket or crankset.
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1answer
116 views

Crankset replacement for TERN Verge D9 (9 gear folding bike)

I need assistance with replacing the crankset on my Tern Verge D9 folding bike. The pedals threads are ruined - presumably due to cross threading. Nothing immediate comes from googling - but I am ...
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1answer
114 views

Adapter for a Shimano 7000 Crankset to BB30 Pressfit

OK. I am confused with all these BB standards. I'd appreciate it if someone points out the correct adapter for my Opus Allegro 4.0 with a bb86.5 monocoque running on a Tiagra 4600 groupset and FSA ...
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2answers
90 views

Bottom bracket needing repacement more often in a single speed bike

I used to live in quite a hilly area but managed well with a single speed Mango aluminium bike on most of these hills. I wanted to know if it is possible that due to extra pressure being exerted on ...
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2answers
37 views

Can you interchange a FC7710 Octalink drive side crank arm with a FC7701 Octalink crank

I want to change to a 165 mm crank length on the drive side of my Dura Ace Octaplus FC7703 triple chain set. Can I use a drive side Dura Ace Octalink FC7710 track crank to do this? Are the two crank ...

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