Questions tagged [chainring-oval]

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Chain slipping at specific chainring angle

1x11 road bike suddenly starts “slipping” gears without fully jumping gears. I noticed that, only when pedaling backwards in the bike stand, it happened in 180 degree intervals at a specific part of ...
Jake's user avatar
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2 votes
3 answers
203 views

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

When building a bike with 12s Force AXS, SRAM/Quarq powermeter, 2x with oval Rotor chainrings, I missed that the supplied bolts with covers (from SRAM/Quarq) where for 1x (i.e. too short and they ...
T0TTE's user avatar
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0 answers
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Oval Rotor Q-rings impossible (for me) to dial in on (new) OPEN U.P. with SRAM Force AXS D1 FD

For a long distance dream build, I chose the latest OPEN U.P. frame and a Force D1 groupset with oval Rotor 48/35 Q-rings. I'm no stranger to setting up oval chainrings since I've had O.Symetric and ...
T0TTE's user avatar
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3 votes
3 answers
812 views

Fixing oval rim?

I have single wall rim that is bent inward about 3mm on the areas marked with red. Is there a way to fix it? How I go about it? It's a cheap bike; I don't want to invest more money into new rim, and I ...
LilBro's user avatar
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3 votes
2 answers
2k views

Absoluteblack oval chainring doesn't completely fit GRX crankset

I'm trying to install an absoluteblack oval chainring on a GRX FC-RX810-1 crankset. After assembling and tightening the bolts I noticed there's a gap between the chainring and the crankarm. Basically,...
Stanislav E. Govorov's user avatar
2 votes
2 answers
383 views

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

When I bought my Quarq DFour for Dura-Ace 9000/Ultegra 6800/105 5800 chainrings last year, I had planned to mount my o.symetric 50/34 chainrings. However the asymmetric shape of the inner ring couldn'...
T0TTE's user avatar
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2 votes
1 answer
151 views

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

I would like to install 52-38 Osymetric chainrings instead of my 52-36 Shimano Ultegra R8000 ones. I've bought the Osymetric chainrings and tried to install them, but I realised I need bolts and nuts ...
Léo Davesne's user avatar
1 vote
1 answer
513 views

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

I recently did a 1x10 conversion on my mountain bike. I replaced almost everything on my drive train except for my crankset. The single chainring (104 BCD, 34T) fits onto my drive-side crank arm in ...
user2670468's user avatar
6 votes
1 answer
659 views

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

I am repairing my road bike after a mishap where it swallowed the rear derailleur around the cassette and into the front derailleur. As part of the rebuild, I'm swapping out the badly worn old ...
Criggie's user avatar
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