Questions tagged [chainline]

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votes
2answers
59 views

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 ...
1
vote
1answer
97 views

BB spindle length standard for single speed bike?

Is there a common spindle length for typical fixie/single speed bikes? Namely a bike with: a 68 mm BSA bottom bracket shell a square taper bottom bracket cartridge bearing 120 mm dropout distance ...
1
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1answer
80 views

Shimano R7000 front derailleur height adjustment

I’ve been getting a little bit of chain rub on the extreme opposites but that’s to be expected, however when looking at the front derailleur this morning after a quick clean, it appears it may be ...
0
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1answer
255 views

Ultegra R8000 crank spacer

Does the Hollowtech II Ultegra R8000 crankset need to use spacers? I just converted my bike from Praxis to Shimano (finally I have the whole groupset!). I had to replace the BB and cranks (duh) for ...
1
vote
1answer
42 views

Will my chain line be affected if I use a BB386EVO crankset on a standard cartridge BSA frame?

https://www.ebay.com/itm/324064544587 FSA sells this which allows you to use BB386 cranks with BSA frames. Is the offset different enough between the two standards to cause problems with my chain ...
0
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2answers
548 views

Need to choose crankset for 135mm rear hub of MTB

I replaced older 8 speed cassette on my Cannondale Trail with new Shimano Deore M6000 10 speed cassette (11-42). But since the axle spacing is of older type, want to get a matching crankset (2x ...
1
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1answer
325 views

How to adjust chainline for 2x10 crank set

I replaced my 3x8 system with 2x10 system on my Trail bike. My BB is of 73mm size and as a standard I left one spacer at drive side and none at non-drive side of the chain-ring as of now. But I could ...
4
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2answers
125 views

Cross-chaining in terms of angles

I'm building a recumbent trike and have reason to have the rear cassette offset from the cranks. At the same time, the chain is very long, so the offset is compensated. It looks like the chain will ...
4
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1answer
158 views

Tandem drivetrain--right side front drive

From what I am reading, there are 3 attested tandem drivetrains: 1) crossover drive, with timing chain on the left, and main crankset and drive chain on the rear right. This seems to be most common. ...
2
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2answers
134 views

I want to convert a 1-piece crank triple chainring to a double

I want to convert a 1-piece crank triple chainring to a double. Do I need to worry about the chain line? Do I need a spacer of some sort? Is this a simple swap of the chainrings? If not, what size (...
1
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3answers
216 views

Smaller chainring on the right side of a bigger one possible?

I recently converted my bicycle from a derailleur setup to an internally geared hub. During the conversion, I also replaced the previous crankset (with three chainrings) by a crankset having a single ...
0
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1answer
403 views

Alfine 8 vs Alfine 11 Gates CDX chainline?

I'm considering replacing a Shimano Alfine 8 hub with a Shimano Alfine 11. The bike has a Gates CDX belt drive, and I want to retain the same belt, chainring and rear sprocket. My understanding is ...
4
votes
1answer
124 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 ...
2
votes
1answer
430 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 ...
2
votes
1answer
519 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 ...
3
votes
1answer
833 views

Correcting the chainline on triple crankset with chainring spacers

I have Marin Four Corners bike with 3x9 Sora crankset (most likely FC-R3030) for which chainline is not given on Shimano site, but I've read all road cranksets have 45 mm chainline. I would like to ...
4
votes
2answers
1k views

What is special about 1x11 - why not just big cassette and single front ring?

I currently ride a single speed belt Soma Wolverine with road bars, hydraulic disc brakes and I love it. Only trouble is my knees are telling me I need some lower gears especially up the hills. That's ...
2
votes
1answer
198 views

Is the use of wide fatbike tires problematic with 100mm BSA bottom brackets?

Fatbike frames typically come with 100mm or 120mm BSA BBs. Does the 120mm BB help anything, though? For example, if I have a 100mm bottom bracket and a 5" tire on a 100mm rim, and I switch to the ...
5
votes
2answers
493 views

Converting road single speed bike to 1x

I have a very nice bike that I built from a vintage new steel frame, threadless bottom bracket (because of the french thread in the frame) and 110BCD crankset. It is currently mounted as single speed, ...
2
votes
2answers
630 views

Andel crankset, BB axle length and chainline

I was planning to buy an Andel Standard Track crankset. It uses 110mm axle bottom bracket, but the stock bracket on my bike is 103mm. Will this mess up my chainline?
1
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3answers
569 views

BB spindle length/chainline for re-used Shimano FC-M391 chainset

I'm trying to rebuild an old Univega MTB. Primary goal is to build a good or decent bike from used parts. The crankset+bb that was on the bike when I got it was really worn out. I unscrewed it and ...
5
votes
1answer
2k views

What is required for a proper boost chainline on a 1x drivetrain - only a boost chainring or an entire crankset?

To obtain a proper chainline for a boost rear hub (~52 mm), is it enough to fit a boost (3 mm offset) chainring to a 1x crankset which is originally non-boost, or is an entire boost crankset required (...
3
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2answers
2k views

How much tolerance is acceptable on the chainline of a fixed gear conversion?

When converting a geared bike to fg/ss, at some point there will be adjustments to be made regarding chainline. Without getting into details about what could be made to make it better (bb axle width, ...
2
votes
2answers
1k views

Changing the rear wheel offset to allow space for freewheel

I've had some new wheels built for a steel frame with a 126mm rear dropout spacing. The rear hub takes a 7 speed screw-on freewheel. At the moment the rim sits perfectly central to the chainstays when ...
3
votes
3answers
396 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 ...
1
vote
1answer
355 views

Chain contact on rear triangle

Hi can anyone help with some advice. I have built up a 2007 specialized big hit 2 and fitted it with a 32t narrow wide chain ring as that is what I've been used to riding. It rides great it handles ...
3
votes
1answer
760 views

Chainline calculation

I need to replace my completely worn cheap cranks (not sure how those are called, but the chainring and right crank are one piece). The chainline of my singlespeed freewheel is approx. 43 mm. I have a ...
1
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1answer
949 views

chain line with narrow-wide chain ring

I'm running a 1 x 10 set up on my mountain bike. Recently I noticed that when I'm on the largest cog, there is a lot of friction in the drive train and is choppy. I think this is due to the fact that ...
6
votes
1answer
696 views

Does the BB axle (spindle) lengths 1:1 compare for square taper and octalink?

When measuring the axle length of a square taper bottom bracket, can I pick a new octalink bottom bracket with the same axle length? I can think of some offset added or removed by the difference how ...
3
votes
3answers
2k views

What can I do to stop my front dérailleur rubbing against the crank arm?

I recently changed the crankset of my Cannondale Synapse 5 from the stock FSA Gosssamer crankset to a Rotor 3D24 crankset with power2max power meter. This was a bit of an iffy modification to make - ...
4
votes
1answer
2k views

'1 1/8' vs '1/2 1/8' chain/chainring

Some 1/8 chains and chainrings are sold as "1/2 1/8" and some as "1 1/8". What is the first number describing? My understanding is that practically all modern chains have a 1/2 inch pitch.
2
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2answers
2k views

Will two spacers between the cassette and the hub effect the chain line?

So I have a set of custom wheels (White Industries T11 hubs) and when the cassette is correctly fastened to the hub with the single spacer provided the cassette cogs can be moved in the direction ...
4
votes
1answer
543 views

Bottom bracket length without knowing front chainline (fixed gear)

I'm wondering if I can find the right bottom bracket axle (or spindle, whatever it's called) with knowing my crank model (Gipiemme Dual Sprint, Velobase says BB should be 113mm) and rear chainline (I ...
0
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0answers
89 views

Chain Line - Front Coming Off

A bike I am taking back from a single speed (SS) to multi speed (like ss - bought another ss) Used 9 speed SRAM 7 that I got cheap I am just going to stay single in the front That is a Race ...
1
vote
2answers
3k views

Road wheel conversion to single speed wheel

I am looking to upgrade the stock wheels on my canondale caad10 rival. It came with a Fulcrum racing set. I was interested in converting this set of wheels for use on my single speed - a surly ...
2
votes
1answer
2k views

Obtaining the optimum chain line

Ok I have a number of variables at play here and I'm trying to obtain the best chain line possible this is on my polo bike so not super important but if there is a way I can do it I'm willing to put ...
4
votes
1answer
4k views

What went wrong with my bottom bracket spindle length calculation?

Here's the facts: My bike frame requires a 70 mm Italian threaded bottom bracket I'm going to use a Nuvinci N360 IGH which requires a chainline of 49 (± 0.5) mm. I have Andel fluted cranks, which ...
3
votes
1answer
2k views

Chainring offset - chainline - of Alfine vs. Ultegra/Dura Ace

I have a bike with Alfine 11 and belt drive. I think I could use a 175mm crank, certainly a 172.5, rather than the 170 Alfine comes in (height 6'1" frame size 60cm) and going a little lighter and ...
8
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5answers
2k views

English vs Italian bottom bracket - chainline considerations

I'm planning a new build and for the first time, I'm working with a frame that requires an Italian bottom bracket. My question isn't specific to the build, but a general question about chainline. ...
3
votes
2answers
2k views

What is causing noise/vibration high power input on right hand (drive side) crank?

I am getting a repetitive grinding sound/slight vibration while fully mashing on my Kona-humu single speed. Description of Problem This grinding is more similar to what you would hear from an un-...
7
votes
3answers
4k views

Single speed chainline

I have just finished my first fixed gear based on an old Raleigh Rapide frame. But the chain line is off and I hear a crackling/ticking noise when I pedal. The wheels are replace with a gipiemme ...
4
votes
2answers
612 views

Chainline on a trek 660 fixie conversion

I am converting an old Trek 660 frame to fixie. It takes a 68mm bottom bracket and I'm putting in an SKF bottom bracket (like this) with both a BMX profile racing 110mm 46t and redline BMX cranks ...