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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2answers
439 views

Left crank keeps coming loose

Often when I go to school on my bicycle the left crank arm starts to loosen up after one or two really gentle jumps. When this happens I just tighten it with the tool I have in my backpack. It went on ...
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23 views

SRAM AXS double to single

I'm looking at a road bike with SRAM Force AXS 2x crank but would like it as 1x. I see from photos that the spider is separate from the right crank. Which one is it: the 1x vs 2x arms are different ...
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1answer
55 views

How to remove a stuck SRAM AXS (Dub) crankset

I wanted to remove my relatively new SRAM RED eTap AXS crankset from my bike and I'm having problems trying to loosen (meaning: being unable to) the main 8mm hex bolt on the drive side, the step shown ...
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40 views

Converting an SRAM Apex 2x10 to 1x10

I want to convert my bike to a 1x drivetrain (and move to a dropbar). It's a Commençal Le Route from 2013, full specs are here: mostly a 2x10 SRAM Apex Groupset (34/48 at the front, 11/32 at the rear)....
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1answer
62 views

What is this crank and BB on this bike? And how do I take that sort of crank off?

I have a 2009 Cannondale Six Carbon 3, which supposedly has a BB30 bottom bracket and a FSA Gossamer non-BB30 crank set. It looks like this: I'm having some creaks when I pedal and I'm trying to ...
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1answer
72 views

Shimano Tiagra - Install smaller front chainring

I recently bought a used Trek Checkpoint ALR4, with which I'm very satisfied. The gearing is ok so far for going on plane ground an light uphills, but when going on long and steeper hills it gets ...
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88 views

Sram Red AXS Crank Bolt Cap missing - how to remove crank, if at all?

I've got an Sram AXS Dub Crankset on my bike and noticed a few days ago, that the black cover around the crankset bolt (chainring side.. where you tighten/loosen usally to remove the crankset) has ...
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29 views

Raleigh 300 Crank Bolt specs for replacement

I have a Raleigh 300 and the crank bolt fell off and was lost. I have no idea how to find out what size crank bolt I should get! Can anyone advise?
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1answer
145 views

Campanolo record power meter crank with veloce crankset

Can I use a Stages Campagnolo Record left crank with my Campagnolo veloce crankset, if the sizes are a match? Want a power meter of some sorts and it would be far cheaper than getting vectors.
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71 views

Is it ok to pair 11-36T cassette 11 speed with 50-34T Crankset?

Is it ok to pair 11 speed 11-36T cassette with 50-34T crankset? And is Shimano 105 RD compatible with this setup? I'm planning this setup for my Japanese vintage touring bike.
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Compatibility between Shimano 105 crankset and Shimano Deore derailleur

I have a wild idea to replace a crankset on my Merida Crossway 500 (2014) (which is now SR Suntour NCX-FX-10s 48A-36-26 CG) with Shimano 105 5750 cCompact 10sp (switch from 3-speed to 2-speed). The ...
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40 views

Does anyone here have measurements of SRAM's direct-mount spline interface?

The makerspace I work in purchased a new metal milling unit and I want to test its software's tolerances and mill a narrow-wide chainring. I'm guessing it just consists of a circle with square ...
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724 views

New pedal fell off maybe 50 miles after installation. Should I replace the entire crank, just the arm, or repair the thread?

Repair newbie here just getting back into mountain biking after a long absence. I recently bought a Cannondale Catalyst 4 from REI. It's a fine introductory bike for what I'm looking for, but I ...
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2answers
88 views

Not able to get crank bolt into bottom bracket spindle

I recently posted a question about changing my chainset, I was advised on this SRAM chainset which I could use which would fit my square tapered bottom bracket. I have attempted to fit the new ...
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1answer
63 views

Can I replace a 3x8 1999 Sora crankset with a Claris FC-2403?

I expect I would need a compatible bottom bracket too, like the one that this Claris crankset is frequently bought together with, here. The front derailleur is already a Claris, a few months old. ...
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3answers
117 views

How to remove hex crank bolt

I have been looking online for tutorials on replacing a chainring (or three) for my Scott mountain bike: https://www.thebikelist.co.uk/scott/aspect-40-2012 When trying to take off the chainset so ...
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3answers
73 views

How can I replace my front cog… or fix slipping off on folding bike?

I have a Faulkner folding bike and I notice often the 6th gear, high gear falls off switching to high gear. Someone mentioned that the cog might be a bad choice for the front of folding bike and may ...
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2answers
108 views

Worn out square taper bottom bracket spindle?

I got an used bike with a worn out left crank arm. I tried replacing with a new square taper crank arm and torqued it to 40nm; however, it started creaking soon after and the bolt had become loose (I ...
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1answer
48 views

Deore XT Power Crank

I have an Ultegra Crank set. I also have a Deore XT 175mm left side power crank. Can I use this on a road bike?
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1answer
78 views

Single chainring conversion issues

I've got a Specialized Crosstrail Elite. I want to get rid of the front derailleur and go for a single front chainring. Its a 68mm BB shell but needs a 73mm BB with spacers. It currently has a FSA ...
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1answer
117 views

Shimano Front Chainwheel FC-MC19 Replacement?

I have Shimano FC-MC19 22/32/42 175mm crankset on my MTB for 17 years and it's time to replace it but I find it difficult to figure out what new crankset will fit my bicycle. Two years ago I replaced ...
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1answer
88 views

Is the Shimano 2303 crank arm and the 2300 crank arm the same?

I bought a Shimano 2303 crankset (52/42/34 triple) by mistake although I should have bought a 2300 crank If I remove the inner 34t, will it have the same structure as 2300 crank? By structure I mean ...
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220 views

Can I grease a crank spindle/bracket without disassembling the crank set?

A bit of history: the grooves on the spindle are partially destroyed/skewed by cycling with a loose crank, so I applied a lot of force to a hexdriver to get the crank arm on. Now, it would be quite ...
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1answer
40 views

Will a bashboard and 3 chainrings require longer bolts?

Following on from Could I use a FD-M735 with a FC-MC3x?, I noticed that that the Shimano FC-MC36 crank with this unusual bash board fitted, only has one chainring. Would I be able to get the three ...
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1answer
43 views

Could I use a FD-M735 with a FC-MC3x?

I have a Shimano FD-M735 currently on my bike, and I would like to replace the aging FC-TY33 that I have, with a FC-M730 ideally, but they are too pricey. However, I have found a FC-MC36 and a FC-MC34 ...
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1answer
67 views

Crankset removal, Shimano FC-M361

I'm trying to save an old Trek and need to remove the bottom bracket. The crankset says FC-M361 but when I google that it says that's a square taper bottom bracket. This surely doesn't looks like a ...
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1answer
81 views

Shimano Sora FC-3503 chainrings

I want to change my 50T chainring of my Shimano Sora FC-3503 crankset. Do I have to buy the same one or other chainrings are also compatible with it? If yes could you give me some light which ones ? ...
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Shimano front derailleur compatiblity with FSA crankset

The front derailleur on my old bike is giving me some problems, it shifts only after 3-4 presses on the shifter, and the chain rubs on the front derailleur and makes this grinding noise. I was ...
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1answer
80 views

installing cotter pin cranks - pin isn't flush

So I managed to get the right sized cotter pins. Without installing the cranks onto the spindle, I could drop the cotter pin through the hole. However when I attached the spindle, the pin won't go ...
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1answer
92 views

Use 105 crankset on 9x2 Sora equipped bike

Want to ditch my basic square taper FSA Vero (50/34) crankset on 9x2 speed Sora drivetrain (2018 Devinci Silverstone 2) in favor of 105 compact crankset. I will attempt to get one in 50/34 not to mess ...
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109 views

Damaged pedal axle thread in crank arm [duplicate]

I'm brand new to cycling and I have an entry level Cannondale catalyst 3. I was riding my bike on a trail and when I got home I noticed my right pedal was wobbling around. I tightened it but the pedal ...
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2answers
194 views

I’m unsure what I need to change to 1x chainring

I’m looking into upgrading my bikes chainring to a single one, I took off the one I have on my bike currently and there is no way of transferring the crank arm to the single chainring, I’m unsure what ...
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1answer
192 views

Can you have an Ultegra crank arm on the one side and a 105 crank arm on the other side

I have an Ultegra groupset, but I also have a 105 left crank that has a power meter. Can you mix these two? I don't care about the weight difference, only talking about a geometry point of view. My ...
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1answer
151 views

Mixing Ultegra or 105 left crankarm with Shimano Sora support

I'm interested in buying this power meter: https://pl.aliexpress.com/item/XCADEY-Bicycle-power-meter-Crank-power-meter-Bicycle-GPS-Computer-Garmin-Edge-Bryton-IGPSPORT-Support-ANT/32798182129.html. I ...
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2answers
283 views

How to remove an older Shimano Hollowtech crank?

I'm getting some creaking in my crank/bottom bracket and a good first step towards fixing this is to remove and clean the cranks and chainrings. If I still have the creaking, the BB is almost ...
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1answer
154 views

Chain getting stuck between large chain ring and front mech when changing into big ring

15+ year old Scott MTB. When changing gear from mid to large chain ring the chain gets pinched between the mech and the large chain ring. Tried adjusting the max min screws, problem persists. Old bike ...
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2answers
118 views

What crank arm bolt is required here?

The crank arm on my Decathlon Triban 520 became loose during a cycle. On inspection the crank arm bolt is missing. What bolt do I need as a replacement? (Or how can I figure it out?) The manufacturer ...
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2answers
284 views

Can I replace a Shimano FC-MT500 26/36 crankset with a Shimano Ultegra FC-R8000 36/46 set?

On my Kross Level 10.0 MTB (2x10) used mostly on dirt roads and pavement I find I never use 1-10 and seldom go below 15th but I need more top end speed. Wondering if the Ultegra would be a straight ...
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1answer
80 views

swapping crankset and chainline compatibility

I'm looking into placing a power2max powermeter on my bike, which is full Ultegra equipped (R8000). Now, the chainline specs of the crankset from p2m are either 45mm or 46mm (depending on the brand of ...
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1answer
92 views

How to remove stuck Shimano Hollow-Tech bottom bracket cups?

When I tried to remove the bottom bracket bearing cups using the BB tool it was very hard to move or it's just stuck. Tried WD40 then slowly tapping the tool using a mallet didn't work. To cut the ...
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4answers
528 views

Shifting from a Tiagra BB to an Ultegra or Dura Ace BB?

So after about 10,000 miles with my bike I bought in 2015 the bottom brackets have had enough. I need to switch them out, and considering they're quite cheap in retail and also does a lot of the heavy ...
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2answers
105 views

Remove crankset when no bolts visible

I'm sure this is a very common question, but I need to remove the pedals and crank from a CCM mountain bike frame - however, the pedals have no obvious bolts - the pedal arms simply bend 90 degrees ...
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1answer
295 views

JIS and ISO square taper

I've read Sheldon Brown's page on JIS and ISO and have read exchanges in forums about the pros and cons of using ISO cranks on JIS bottom brackets. If my understanding is correct, these standards ...
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1answer
85 views

Front derailleur range suddenly has become very short

For a while when I was riding, there was a stiff feeling changing from medium to high on the crank. Yesterday it wouldn't change at all. I checked the adjustment of the High and Low screws by ...
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1answer
67 views

Stripped out bottom bracket

The bottom bracket of my bike was completely stripped to the point that when you push the left side crank arm, the right crank moves and you can see the bottom bracket lock move out the frame. The ...
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1answer
42 views

Crank tool threads for a BodyGuard R6X

I need to replace a circuit board on my Bodyguard R6X exercycle. Bodyguard sent me the circuit board but little else with respect to information/instructions. I need to pull a crank so I need to buy a ...
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3answers
130 views

What determines crank length?

Without getting really technical what determines the length of the cranks that you would use on your bike? I was wondering if longer cranks without being ridiculous would act as a fulcrum and make ...
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0answers
92 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 has 5 arms and the other only has 4 arms. Which should I get and why would that be a better choice? I'm a slow-ish rider. I'm 50 ...
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1answer
98 views

Is it safe to bolt my single-speed chainring to the other side of the crank?

Background: I converted a 21-speed bicycle to single-speed by removing the derailleurs and installing a single-speed freewheel and crankset. The chainline is no longer straight, and I would like to ...
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1answer
79 views

Changing my crank on a track bike and it wont turn

I bought a new crank for my bike, when fitted tight the crank is stiff to turn as I think it is rubbing against the bottom bracket housing. Any advice on what to do, have I bought the wrong crank?