Questions tagged [chainline]
The distance between the bicycle centerline and the center of the crank. Can also refer to the distance to the center of the cassette. A drivetrain will be designed around a certain chainline. The advent of disc brakes has caused drop bar bike chainlines to move outward slightly.
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Wrong beltline with Gates S550 on Cannondale BadBoy
I need to rebuild the drivetrain on a secondhand BadBoy 1 with 8-speed Alfine and Gates belt I got last year. To move house I had to disassemble the crankset because the pedals had seized, and the ...
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front chainline adjustments for 42.5 rear chainline
I have a 42.5 rear chainline (12 speed sram eagle).
In the front, I purchased a eewings-mountain crank.
According to the docs, the offset is (55-chainringoffset).
If I get a 6mm offset chain ring, it ...
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How have gravel bikes been able to accommodate 2x drivetrains with wide rear tires?
Moving to one-by drivetrains on MTBs (which enable lavishly wide tyres of 2½″ to 3″) was motivated by the simplicity of shifting on technical terrain.
But when gravel bikes were introduced, a common ...
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Shimino FC-C201 Replacement
I'm looking to replace the FC-C201 on a 2000 Diamondback Crestview, which uses an RD-C201, FH-RM40-8 rear hub (135mm), and CS-HG40-8I cassette. I've measured the bottom bracket at 68 x 122.5mm. The ...
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Running DUB wide crank with 52mm chainline
I have a set of sram xx1 carbon cranks that are DUB wide. My bike (2023 Specialized Epic Evo) is DUB crank 52mm chainline. If I add BB spacers to the DUB wide crank and use a 6mm offset chainring ...
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How does SRAM adjust rear chainline for their "wide" front drivetrain
SRAM's new "wide" cranks (available on some 2x and XPLR (aka 1x) models) push the chainline out 2.5mm. They say this is compatible with existing cassettes, xDR hub bodies, 135/142/boost hubs....
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Replacement BB chainline check?
I want to replace a bottom bracket (to add a torque sensor for a recent ebike conversion). Current BB spindle length is about* 114mm, replacement is 127mm. So, all else equal, we're talking about ...
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BB86/92 spacer hollowtech Ultegra 8150
I'm having some issues on my new road bike which I am setting up. It's a Canyon Ultima CFR frameset which came out of the box with the handlebars, Dura Ace 9200 wireless shifters and brake calipers.
I ...
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Abnormal wear on Gates Belt Drive CDX rear sprocket
I'm using a Gates Belt drive CDX setup with a Shimano Alfine 8 hub on a SOMA Wolverine frame. Over about 6000 km, I've worn out 3 stainless steel rear sprockets; the last one lasted only about 600km. ...
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Front chainring and Rohloff IGH sprocket not exactly aligned
I ride a Bike Friday Pocket Llama with a Rohloff internal gear hub. I noticed that the front chainring and the rear sprocket are not exactly aligned.
As the Rohloff internal gear hub will stay the ...
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SRAM Rival chainline on a 1x System, feeling the chain slipping into place
I have myself a SRAM Rival ETAP 1x Drivetrain and I am looking for advice here on a problem before I go to a Mechanic.
Is it right to feel the chain slipping into place on the Front Chainring (while ...
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Adjusting chain line by mounting the chain ring inside the crank spider
Background: Sugino RD2 single-speed cranks call for a 103mm bottom bracket which gives a chain line of 45mm, which is what I need, but there aren't suitable square-taper BBs in this size. ...
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How to calculate what BB spindle length I need for a mystery crankset?
I'm building up a bike frame with spare/junk components to be my beater bike for commuting. It will be a single speed, chainline on my rear wheel is 42mm. I have a crank set to use, but I'm not sure ...
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Chainline issues
When my 10 year old chain snapped, I realized that I needed to replace my rear cassette and crank, due to wear. Noted for the future! I ordered a 9 speed cassette from Shimano (same brand and number ...
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SRAM dub crank chainline
Any SRAM experts out there?
Zero experience with SRAM dub. Used Hollowtech for years before...
Ordered SRAM GX dub crankset. Advertised specifically for 49mm chainline. Arrived pre-assembled with a ...
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