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6 votes
Accepted

How do I move my chainring without moving my crank arm?

If your bike was previously set up with three chainrings, then the new single ring should be placed in the middle chainring location (i.e., on the inside of the four mounting points of the crank). ...
CarlSam's user avatar
  • 181
5 votes

Fixing oval rim?

Yes - start by lubricating all the nipples with penetrating oil, and then back off the red areas and tighten the green areas, a half turn at a time. As the wheel comes back into round, check ...
Criggie's user avatar
  • 125k
3 votes

Fixing oval rim?

You will need to assess for yourself whether the rim material and construction type is reasonable to try this on. There are a number of tools and methods that do it, but they more or less are specific ...
Nathan Knutson's user avatar
3 votes
Accepted

Modify a front derailleur cage to allow for non-round chainrings like Biopace or Rotor?

For completeness, I ended up replacing the bolted-on brazeon mount with a band-on braze-on mount. This allowed me to raise the derailleur by those critical last few millimetres. If the bike had a ...
Criggie's user avatar
  • 125k
3 votes

Can absoluteBLACK's 48/32 sub-compact chainrings be mounted on the Quarq DFour (for 4-bolt Shimano chainrings)?

A way of getting a pretty good guess is find a laid-flat image of the ring in question, open in photoshop or gimp or cad or whatever, make some paths or circles that exactly cover two opposing bolt ...
Nathan Knutson's user avatar
2 votes
Accepted

Which bolts and nuts to use to install Osymetric chainrings to replace Shimano Ultegra R8000 chainrings?

Shimano 46 tooth outer chainrings are flat and lack the '3d' profile of the 50 and 52 tooth rings. The 'fancy' bolts you linked to are shaped to cap off the crank spider arms. Those will work with the ...
Argenti Apparatus's user avatar
2 votes

Fixing oval rim?

Did it get bent in an accident or is it merely a case of bad manufacturing tolerances? Is it a front or a rear wheel? Rim brakes or disk brakes? In my experience bad rims can make it much harder to ...
Michael's user avatar
  • 27.8k
2 votes

Absoluteblack oval chainring doesn't completely fit GRX crankset

For future reference, these particular chainrings will fit just about any Shimano 4 bolt EXCEPT the GRX. They mount a bit strange compared to many chainrings as you can see in this image, the bolt ...
Nate W's user avatar
  • 9,272
2 votes
Accepted

Can absoluteBLACK's 48/32 sub-compact chainrings be mounted on the Quarq DFour (for 4-bolt Shimano chainrings)?

No, absoluteBLACK's sub-compact inner rings (i.e. 32t and 30t) cannot be mounted on a Quarq DFour for 11 speed Shimano chainrings.
T0TTE's user avatar
  • 762
2 votes

Are there chainring bolts with covers for SRAM AXS Quarq powermeters for 2x that looks like SRAM's own for 1x?

Just found an elegant solution to this same problem so thought I should share, as using standard chainring bolts without the covers just looks terrible. You need: -AXS caps/covers and bolt kit for 1x -...
veitzel's user avatar
  • 21
1 vote

Are there chainring bolts with covers for SRAM AXS Quarq powermeters for 2x that looks like SRAM's own for 1x?

This site appears to have 2x bolts and covers. Is this what you are looking for? https://www.excelsports.com/sram-force-etap-axs-chainring-bolt-set
David D's user avatar
  • 21.5k
1 vote

Are there chainring bolts with covers for SRAM AXS Quarq powermeters for 2x that looks like SRAM's own for 1x?

The official answer is you use regular chainring bolts and sleeve nuts for 2x (per the user manual) for the power spider, and the part number (11.6918.004.000) for them is in the spare parts catalog. ...
Nathan Knutson's user avatar
1 vote
Accepted

Absoluteblack oval chainring doesn't completely fit GRX crankset

Thanks everyone for your help, this indeed doesn't look normal. I ordered a wolftooth oval chainring instead. It has no threads in the bores and fits perfectly.
Stanislav E. Govorov's user avatar

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