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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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59 views

Crankshaft Replacement

So I have an old Schwinn Crossfit MTB that Ive loved and had for a long time and recently wanted to fix and upgrade it a bit. I wanted to know about the crankshaft compatibility for it, as ill im able ...
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2answers
916 views

What is the metric thread diameter of my crank arm pedal thread that's stripped

I'm in the market for a threading repair kit. I live in Australia so the closest options for me are to go to Supercheap Auto or Bunnings Warehouse (links to products from those stores). These repair ...
4
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1answer
2k views

Replace a 52/36 crankset with 50/34

I'm looking at purchasing a new bike with a 52/36 crankset on a 11-32 cassette. I've grown accustomed to a 50/34 crankset on the same cassete, and for the type of riding I do in the PNW (300-400ft ...
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2answers
67 views

What parameters should I consider when choosing a crankset?

I have to change the crankset on the quite old bicycle. I need to order it online so what parameters should I consider when choosing the right chainset? It's used 7 gear bike and I don't know what ...
2
votes
1answer
421 views

Spindle diameter on the FSA Gossamer TT MegaExo crankset

What is the spindle diameter on the FSA Gossamer TT MegaExo crankset? 24 mm or 30 mm? I can't find a direct answer anywhere. I have seen MegaExo described as 19 or 24 mm, but "Gossamer" as 30. I'm ...
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3answers
4k views

Crank Arm Compatibility - Shimano Ultegra 6800 and R8000

Does anyone know if an Ultegra 6800 left crank arm will work on an Ultegra R8000 crank? I'm looking at upgrading my road bike, and I'd like to move my current crank-arm power meter over to the new ...
2
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2answers
435 views

QUARQ DFour installation on Shimano bike

I'd like to replace my Ultegra 6800 crankset with QUARQ DFour powermeter. But I don't know how to choose between BB30 and GXP versions. I have Shimano Pressfit SM-BB92-41B bottom bracket. Do I need to ...
2
votes
1answer
450 views

Single to double chainset conversion

Can I change a single chain ring to a double? I have an old steel frame with a narrow bottom bracket shell 66mm and a single 50 tooth chain ring. I would like to add a 36/40 inner and want to know ...
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2answers
107 views

getting the crank arms off an old bsa bike

So I'm resuming work on restoring a bsa bike for my sister. The first thing I need to do is strip it as it's in need a of new paint job. I'm having trouble removing the crank arms. They appear to ...
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1answer
88 views

Using normal square bottom bracket on crankset designed for E type?

I am building a LHT 26" and I am planning to use a square taper bottom bracket. Also want to have triple chainring with a small chainring 22T so bought the Shimano Alivio FC-M430, about the best ...
2
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1answer
1k views

Loose crank exercise bike

I have an older Multisports EnduroCycle 550. The crank seems to be loose - the pedals wobble a bit side to side. How can I tighten that back up or do I need new parts?
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3answers
157 views

Is this crank usable or should it be replaced?

I've been suffering from weird noises while pedalling for a couple of weeks. Noise has been isolated to the left foot, its definitely not the right side. After an inspection revealed no cracks or ...
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votes
2answers
144 views

Replaced my crackset, chain keeps popping off the small chainring under load

Looking for a little lower gearing on my gravel bike, I replaced the crankset with a FSA Omega with 46/30 chainrings, along with a new bottom bracket & chain. If I stand on the pedals while on ...
3
votes
2answers
1k views

Cause and diagnosis of wobbling crankset/chainring

I was replacing the chain recently. When spinning the crank I noticed that the chainrings are slightly wobbling along the axis. I was able to see the wobbling with my eyes. First check I kind of ...
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1answer
94 views

Replace truvativ crank

I have a Shimano UN55 square BB. Within about a month of buying my new bike the Truvativ crank came loose and is essentially too rounded out to salvage. Any suggestions on an alternative crank to go ...
3
votes
1answer
116 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 ...
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votes
1answer
519 views

Must replacement crankset have the same number of teeth?

I have a Giant Boulder 520 (1996) and I am upgrading it bit by bit. I bought a new Shimano 7 speed cassette 11-28T. Now, I want to replace my crank set, however I do not know which size to buy. Does ...
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3answers
111 views

My chain slips despite new parts and tuneup

I use my bike for commuting, and so my knowledge of bikes is enough to make to work and back. I have a trek 4500 mb. I purchased it used, and from the very first day I have had this issue where the ...
3
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2answers
668 views

Fixed Gear crank arm slips

The crank arm on my fixed gear "slips" when I put large pressure on the pedals like when I take that first pedal to get the bike moving or pulling up hard on my toe straps to slow down. The slip is ...
3
votes
1answer
68 views

Can I add spacers to my cassette and crank to fit 3" tyres?

Can I add spacers to my cassette and crank to fit 3" tyres? The chain rubs on the tyre. I’m running a hope hub with SRAM 8 speed cassette and saint cranks. Can I just buy spacers to pull the cranks ...
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0answers
338 views

Compatible crankset for my singlespeed

i am planning to replace my current crankset and BB with this: http://www.jensonusa.com/Cranksets/Race-Face-Ride-1X-Crankset?cs=Blue Would like to know if this compatible with my bike. Currently ...
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votes
3answers
164 views

Measuring chainline without cranks?

I just bought a 1970s Peugeot Mixte UE-18 for $10 at my local bike co-op. It's in great shape, but is missing the bottom bracket and cranks. I'd like to upgrade to a cotterless crankset. However, I ...
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votes
3answers
343 views

Crank extractor not screwing in properly

I'm trying to insert my crank extractor into the crank of a square taper (Shimano Tourney). It won't really screw in properly. On several attempts it will go in a little bit (about 1 or 2 mm) and ...
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1answer
113 views

Will this all fit together? [closed]

Shimano BB-UN100 Square Taper Bottom Bracket 68/122 BSA Sealed Cartridge BB Sram / Truvativ PressFit BB30 /PF30 to BSA Bottom Bracket Adapter And maybe I need something else? Please help! Ordered ...
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votes
2answers
499 views

Bottom Bracket compatibility?

I have an older Wabi Classic cycle which comes with TH Industries BB-7420AL 68/103 that seems to creak. I believe its called squared tapered. Its a single speed. Missing Cranks I want to change the ...
0
votes
1answer
281 views

Wobbly bottom bracket on Radford, need guidance to replace

I have an aluminium frame Raleigh bike that's been stuck at the back of my garage for a few years now. It has a wobbly bottom crank. I assume the bearings have gone, but A; I don't have the tool to ...
2
votes
2answers
534 views

How does one upgrade a bicycle?

I am a total bike novice, I can ride them but have never done much as far as maintenance. Recently, I got my old bike out of storage, it is a 1991 Trek Multitrack 700, and I want to know if I can "...
0
votes
1answer
77 views

Will this crankset be a good replacement

I removed my 3 ring crankset from my old mountain bike and it was welded together so I have to replace the whole thing. The bottom bracket is square taper. The chainrings were 48, 38, and 28 teeth and ...
3
votes
1answer
107 views

Can I use adapter to adjust Q-Factor like curved cranks?

So I just picked up an FSA power meter that is 386 EVO compatible and I replaced my FSA crank , but then realized that my original FSA crank is curved and the power meter crank is straight so it hits ...
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votes
1answer
135 views

Clicking noise gets better with water

So here's my latest video checking the casette, you don't have to watch it all. This is the old video when running: My question is ...
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1answer
34 views

is a SRAM XX 1 crankset compatible with an XT 8000 BB

can I put a SRAM XX 1 2x10 crankset into the BB of an XT 8000 (also 2x10)
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1answer
185 views

Nukeproof Pulse SRAM PG-1030, 11/26, 10-speed to 11/36t, 10-speed

I'm a bit of an amateur but looking for advice at the moment. My cassette is 11-26t which is pretty hard for me (not that fit). I'm looking at changing to the 36t which I can see would be bigger, if ...
0
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1answer
852 views

Converting 3x to 1x Drivetrain

I have a new crankset (link) on the way as well as a chain guide/bash combo from OneUp. I am getting a 36T narrow-wide chainring also. The bike I'm working on has a SRAM 3x9 drivetrain with 11-34 ...
2
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0answers
88 views

Friction in newly installed bottom bracket

I could do with some help on a bike build... I've installed a BB86/92 Trivatuv pressfit GXP bottom onto my Production Privee Shan frame. I used a headset press and everything seemed to go smoothly. ...
0
votes
1answer
77 views

use with SHIMANO 105 FD-5504 Front Derailleur on crankset 26/36/48t [closed]

Can I use a SHIMANO 105 FD-5504 Front Derailleur with Crankset 26/36/48t? My Cogset Shimano HG-50, 11– 32t
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0answers
444 views

Is Shimano 36/24 double crankset possible?

I'd want to exchange my triple crankset with double. After playing with gear calculator and testing some double setups, I came to the conclusion I need 36/24 gearing. I have 10 speed drive, so I'm ...
3
votes
1answer
382 views

Square taper crankset develops play after changing bottom bracket

After replacing a bottom bracket with square taper I repeatedly have to tighten the screws that fix the crankset (on each side) to the bottom bracket axle or otherwise I can feel sometimes a slight ...
2
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1answer
357 views

What is causing strange resistance when pedalling forward?

I noticed today a strange resistance when cycling home. I've done some investigating and by removing the chain have isolated the issue to the bottom bracket area. When I move the pedals forward there ...
2
votes
3answers
2k views

the thread for screwing in the pedal has been stripped on right side. Any way to avoid buying a whole new crank? [duplicate]

Put a new pedal in, and followed advice not to screw it in too hard. Unfortunately, I made it too loose... and the thread on the right crank is now almost completely stripped because the pedal was ...
1
vote
2answers
130 views

When I pedal they keep shifting forward randomly but not moving the bike forward [duplicate]

When I try to pedal fast or hard or just put any sort of pressure to move the pedals foward they seem to give out, randomly jerking forward and not making the bike wheel move. https://drive.google....
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vote
1answer
142 views

Help identifying problem with bike crankset/bottom bracket

A few days ago I took a fall going down hill after hitting a large pothole. I fell on my right side, which if you didn't know is the side that contains the chain and gears on most bikes. Looking at my ...
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vote
1answer
164 views

FSA MegaExo crank tensioner bolt, can I use any 12mm bolt?

I have a FSA MegaExo (which just came with a bike I bought 2nd hand). As usual the bike needed service because the previous owner did not do anything before selling. Crank tensioner bolt FSA 12M was ...
1
vote
1answer
769 views

My new crankset is stiff

I just recently bought a new crankset that included the bottom bracket, a english threaded 68 mm bb. I installed the crankset and for some reason its stiff, it moves but doesn't spin at all, all it ...
1
vote
1answer
957 views

How often do you need to grease the crank?

Haven't done maintenance on my bike in years. Recently cleaned it up and repaired some spokes. Greased the front and rear wheel bearings and degreased the chain. Looks good but only thing didn't do ...
4
votes
2answers
130 views

Is my bike capable of swapping for longer cranks?

I have a cross-check at 52 cm with a casual drop handlebar set up. It's a relatively square frame compared to other bikes I've ridden in the past. The cranks feel very small, like I'm not using my ...
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0answers
151 views

Sudden, loud creak from BB area

I was on my way to a meeting, pedaling along, when suddenly there was a loud creak. I stopped, visually inspected the bike, manually revolved cranks both ways, and made sure nothing was sticking into ...
0
votes
1answer
1k views

How to remove and find a compatible chainring for my FSA Comet 1x10

I currently have a 30 tooth chainring on my Devinci Kobain. The gearing is a little too tough for my current fitness level. I am considering putting a smaller chainring on it (as per this question). ...
5
votes
2answers
983 views

Advice for buying a new crankset for my bike

Long story short: I recently bought a second-hand bike (good condition), but the guy who sold it to me screwed the pedals in the wrong sides. After two months of riding, the thread on the inside of ...
3
votes
2answers
395 views

How to tell if Hollowtech II bottom bracket cups are aligned?

I've heard all over about how important it is that you face a frame before installing a Hollowtech BB, as the cups not being aligned could be the difference between your BB lasting 1k and 10k miles. ...
0
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2answers
520 views

SRAM Red 53/39 10spd rings and 172.5 crank work with 11 speed cassette upgrade?

I want to upgrade my 10 speed to 11. Will my SRAM Red 53/39 10spd rings and 172.5 crank work with an 11 speed upgrade? Looking to upgrade to SRAM eTap with the "kit". I understand the need for a new ...