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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3
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1answer
981 views

Can I replace a 3-gear crankset with a 2-gear one cheaply and efficiently?

My commuter bike (a cheap-ish MTB) is in need of new gears. As I never use the "granny chainring", I was thinking about switching to a 2-piece crankset, to save tome weight. However, I am unable to ...
0
votes
2answers
3k views

New frame bottom bracket and crank compatibility and general stupidity!

I recently bought a Scott CR1 SL 2012 frame to replace a crash damaged frame on my 2009 Boardman Team Carbon road bike. The intention being to move as much as possible across from the old bike on to ...
2
votes
4answers
804 views

Replacing 42/52 crankset to 39/52 - will it make a difference?

I have several questions that arise from the fact that the current drivetrain on my old Peugeot road bike is pretty tough to ride when climbing up some steep hills: so I've got a 42/52 up front and 6 ...
3
votes
4answers
4k views

What cassete do I need to run with a compact crankset (50/36), to equal the same gearing as running a standard crankset (53/39) with a 11-28 cassete?

Every new bike in my price range comes with a compact crankset, which I want for climbing, but I race and I need to keep the same top speed that I've had for sprinting and descending (I live in the ...
1
vote
3answers
5k views

Clicking noise from crankset

A month ago I bought a Scott Aspect 60, and for about a week everything was ok. Then, I started hearing a noise coming from the crankset. First thought was that it was the front derailleur - after ...
0
votes
1answer
205 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
1
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2answers
2k views

Mountain bike crankset chainring compatibility

I have a Shimano Deore LX crankset. I would like to replace the outer chainring. What manufacturer chainrings are compatible with my crankset ? My outer chainring takes all of the abuse, due to ...
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2answers
6k views

How to fix a stripped pedal crank

The threads on my bike's pedal crank just became fully stripped and the pedal fell off, though the pedal itself is fine. Is there any way I can fix this without fully replacing the pedal crank?
3
votes
3answers
856 views

BMX gearing - for road / commuting

I have a 2010 Haro Pro Race, which I bought for commuting and general tomfoolery. I commute on it 2 miles a day, and I want to be able to go faster by changing the current single-speed gearing ...
3
votes
1answer
148 views

Should I grease pins when re-installing them on cottered cranks?

I'm restoring a vintage Peugeot with cottered cranks. When reattaching the cranks to the bottom bracket spindle, should I grease the pins or put them in dry?
0
votes
1answer
398 views

Shimano Ultegra chaninrings on Truvativ Elita Tandem crank

I'm attempting to replace the chainrings on my Cannondale Road tandem. The crankset is a Truvativ Elita Tandem (52-39 10 speed big/middle ring). The new rings are Shimano 6603 52-39 rings. I swapped ...
2
votes
1answer
224 views

Size of Pedal Threading on old German Glockenlager?

I removed the pedals of a Göricke bike from 1934 or 1935 (according to the bike number). It has a Glockenlager (What is that in English? Bell shaped bottom bracket?) as seen in the picture. The crank ...
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vote
4answers
270 views

Do I need to replace cranks after newly installed pedals torqued out along with some threads in my crank?

I must have crossed threads like an idiot when I installed pedals for my new SPD cleats. After several miles of riding (~100-200 m), I suddenly got this inexplicable rolly, bumpy motion in my foot. ...
2
votes
4answers
778 views

deore LH crank on 105 chainset

I have a 105 triple chainset (hollowtechII) and the left hand side has developed a crack. Now I can't find any replacement 105 LH cranks but there are some Deore ones on the ebays that aren't too ...
5
votes
2answers
2k views

Swapping cranks, but the new crank is wider, how do I compensate for this?

I was swapping the cranks and bottom bracket on my karate monkey from a Truvative stylo crankset (Mountain Double, GXP bottom bracket) to a Race Face Evolution DH (Mountain Triple, Race Face bottom ...
3
votes
4answers
5k views

Replacing Crankset. Do I need to replace chain? Then do I need to replace cassette?

Over the past year, my road bike's crankset has gotten pretty bent up and out of wack. Not due to abuse, just wear and tear I guess. It's pretty bent and has a nice wobble that I can see as I look ...
2
votes
1answer
4k 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??
3
votes
3answers
2k views

Shimano Hollowtech left crank arm getting loose

After 2 years of good use, left crank arm on my FC M542 crank set has started to get loose quite often (cca 500 km). It is usually indicated first by few now an then click-clanks somewhere in the ...
0
votes
1answer
119 views

What is a wireless crankset?

For example this (rather expensive) item: http://www.wiggle.co.uk/sram-srm-powermeter-pro-wireless-bb30-double-chainset/ What is actually wireless about it? Is this for a cadence meter? Wireless ...
3
votes
1answer
2k views

Shimano chainring / crankset compatibility

I discovered a Shimano FC-2300 Crankset (175-mm 52/42/30T 8 Speed) for $62 on Amazon - is this compatible to replace my old FC 3301/3304? The longer story is I need to replace my Shimano chain ...
2
votes
2answers
4k views

Things to consider when upgrading crankset

I am considering upgrading my crankset, or rather I am considering considering to upgrade it. I would like to gain a few teeth since I am permanently riding on the 48/13-15 making the 38 pretty ...
3
votes
1answer
236 views

Help me to attach inner ring

I have cranks with 4 holes for outer and middle rings attachment. There are no holed for inner ring attachment. On my other bikes crankset middlering has 8 holes 4 for cranks and 4 for inner ring. I ...
0
votes
2answers
511 views

FSA Gossamer Crank Spider cracked

I've got an FSA Gossamer pro MegaExo compact crank set. Lately, while tightening the bolts on the crank spider, it cracked (see picture). I know FSA has recalled the left crank because it turned out ...
10
votes
1answer
604 views

What's this? Photo of bicycle with pedals by the rear wheel

I just stumbled upon this photo of what appears to be a reasonably normal citybike, except it looks like it has a second set of pedals at the rear wheel. source Anybody knows what it is?
5
votes
3answers
978 views

Campagnolo 11 speed crank with 10 speed running gear

I currently have an older 10 speed Campagnolo Record group set with 52/39 cranks. I would like to get a compact group set. I can't get an equivalent 10 speed compact cranks now but I can get an 11 ...
2
votes
1answer
973 views

How do I re-attach a crank that has fallen off?

I have already read My crank fell off, how do I re-attach it?, but it did not answer my question. I was biking up a hill in first gear, and I felt my left crank was a bit loose. Never having had ...
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vote
2answers
961 views

Crank is slipping freely occassionally when pedaling; occasional “clonk” sound

Crank is slipping freely occassionally when pedaling; occasional "clonk" sound-not sure where sound is coming from-crank is tight, no movement or looseness
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votes
9answers
33k views

Why does my bike make a noise when I pedal hard?

When I pedal forcing a little with my right leg, the bike makes a noise that I don't know how to describe. I'll try to do it. It's like: a short "ting" a tiny bell if a small rock hits the down tube ...
4
votes
2answers
2k views

What chainrings are compatible with the Dura Ace 7900 crankset (apart from 7900 chainrings)?

I need to get a 52t chainring for my 7900 Dura Ace crankset but am not willing to spend 150 euro on a chainring. Would an Ultegra 52t 6700 chainring work on the 7900 Dura Ace crankset ?
2
votes
2answers
809 views

What are the current options for short crank arms?

I have knee problems, and I've noticed that the seat position that makes it possible for my leg to not be absolutely straight at the bottom of the stroke causes my knee to pop up a bit higher than my ...
2
votes
2answers
434 views

What do you call the crankset system type on the Sram Apex?

I see these everywhere, but no one can come up with a consistent name for them from company to company. GXP is the closest I can come to a name for the bottom bracket. ...
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vote
3answers
2k views

Removing bottom bracket from 79 peugeot frame

I would like to remove the bottom bracket from an old french peugeot race frame. I believe the frame was built in 79 judging by the decals and stamp on the bb. The bottom bracket and spindle at the ...
22
votes
7answers
2k 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 ...
0
votes
1answer
454 views

Right crank arm feels uncomfortable

After a loose bottom bracket and some prevailing knee pain I have made a few adjustments to the bike. I have managed to greatly reduce the pain in my left knee but the right still has some pain. I ...
2
votes
2answers
998 views

Attaching crank arm with Shimano SLX M660

Firstly, apologies if this question has tones of frustration, my new crank set and bottom bracket has never been installed correctly, so I am going to do it myself. Should the drive spline on the ...
7
votes
1answer
1k views

The pros and cons of crank self-extractors

I'd like to know more about the reliability of self-extracting crank bolts, but haven't found much information on how they perform (or how they don't). My interest stems from touring and ...
3
votes
1answer
789 views

Can't remove crank arm on older Mercier

I'm rebuilding an older Mercier and have decided to tackle the bottom bracket. I've read a few articles and watched a few videos on how to remove the crank but none of them look anything like what ...
1
vote
1answer
625 views

Lowering the gearing on a Shimano biopace double

My bike has a 52/38 Biopace pair on a 5 bolt 130 crank (Shimano 105). I want to reduce the pedal load because I'm getting older and live in hilly Wales, UK. I have bought a 42/28 Biopace pair. ...
7
votes
4answers
9k views

What should a big guy look for when buying a road bike?

I'm 6ft 4" (1.8m) and 22st (139kg). I do a fair bit of cycling, mainly spinning and mountain biking. I would like to get into road riding so I'm looking to buy a road bike. I want to spend between ...
6
votes
3answers
2k views

Solutions for pedals screwed in the wrong sides?

I have a Focale44 fixie with a single speed on the other side of the gear (this is called a flip-flop I think?) and I LOVE it so far! I've ridden it for about six months and haven't had to fix ...
2
votes
1answer
273 views

Problems with gears after re-attaching front chainring

I had to remove the pedal crank arm together with the front chain set when fixing a bottom bracket problem, but now that I've re-attached it, gear changes in my front derailleur are completely off. ...
4
votes
2answers
659 views

Converting crankset from 28-38-48 to 30-39-53

My current front setup is a 28-38-48 crank with Deore XT shifter & derailer. In addition to a FD-443 and top/bottom-pull converter, what else will need to be purchased for proper shifting? Also, ...
3
votes
1answer
447 views

Short cage derailleur: how to find out maximum sprocket differences?

I'm building a kind of new bike and would like to put a triple or compact crankset on it. I've still got this NOS huret derailleur set (front, rear and shifters) laying around which would match the ...
1
vote
3answers
918 views

Noise from crankshaft spindle and then the pedal falls off

In the last 6 months I have been getting really bad noises, creaks, clunks, etc coming from somewhere around the spindle connecting to the crankshaft. Every time I put pressure down on the left hand ...
3
votes
4answers
474 views

Trick or tool to help line up 48 splined crank arms

Besides eyeballing it and comparing the line to the seat tube, are there any tricks to getting 48 splined crank arms perfectly aligned? I must have spent a solid 15 minutes looking at them from every ...
0
votes
2answers
3k views

Can I use an “8 speed compatible” crank such as Shimano FC-2303 with a 7 speed Shimano MF-HG37 freewheel?

I have a 2004 Giant Cypress I use for commuting, and the entire drivetrain is very worn out (shark teeth and chipped teeth, front and back). I need to replace the Shimano MF-TZ20 7-speed (14-34t) ...
1
vote
4answers
13k views

Can any bike crankset be exchanged for another?

I have a Specialized HardRock from the '90s. It's seen better days, but I got it for cheap. I had a bike shop look it over, but for some reason the guys missed the rounded off teeth on the front ...
2
votes
1answer
465 views

What crankset should I buy to suit an 8 Speed Campy freehub?

I've just bought a pair of campagnolo/mavic wheels without a freewheel. I'm finding it very hard to understand what will fit on the rear hub. It's English thread, does this mean that any 8 speed ...
1
vote
2answers
3k views

Will 10 speed cranks work with an 8 speed freewheel?

I'm looking at building a road-bike, and I've just purchased some wheels with campagnolo hubs, with an 8 speed freewheel on the back. Can I use Campagnolo Daytona / Veloce cranks on the front? I ...
2
votes
1answer
756 views

Can if fit new 105 5700 cranks on my existing 5600BB?

I am refreshing my drive train. I have been running a full 105 5600 set for a couple years. I have an ultegra cassette and chain ready to fit, and I am consdiering crankset/chainring options. Is the ...