Oval Chainring - Standard (Dura Ace) to Oval then Semi Oval
First Components・2 minutes read
Install oval chainrings by loosening bolts, removing crank arm, cleaning BB, and adjusting derailleur, then apply specific torque settings for a secure fit. Switch to semi-oval chainrings by detaching bolts, adjusting front derailleur, and ensuring smooth shifting between chainrings.
Insights
- When installing a new crank with oval chainrings, it is crucial to clean the chain, apply fresh lube, and properly adjust the derailleur, ensuring the crank arm fixing bolt is tightened to 1.5 newtons of torque.
- Switching to semi-oval chainrings involves precise steps like removing bolts with a 5mm allen key, fitting the chainrings correctly, adjusting the front derailleur, and ensuring smooth shifting between chainrings.
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Recent questions
How do I install oval chainrings on a bike crank?
To install oval chainrings on a bike crank, start by wiping down the chain and applying fresh lube. Stack the chain on the cassette held in place with a zip tie to avoid removing it. Loosen the pinch bolts, remove the crank arm fixing bolt, tap the crank out of the bottom bracket with a rubber mallet, clean the bottom bracket, and install the crank with oval chainrings using grease. Adjust the derailleur, re-install the cable, tighten the crank arm fixing bolt to 1.5 newtons of torque, apply initial tension on the pinch bolts, and finish by using a torque wrench set at 12-14 newtons.
How can I change to semi-oval chainrings on a bike?
To change to semi-oval chainrings on a bike, remove the bolts holding the chainrings with a 5mm allen key. Detach the chainrings from the spider, fit the big and small chainrings, and retighten the bolts securely. Adjust the front derailleur by sliding the clamp higher on the seat tube to accommodate the new chainrings. Ensure clean and precise shifting between the upper and lower chainrings for optimal performance.
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Summary
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Upgrade to Oval Chainrings for Smooth Shifting
- Install a new crank with oval chainrings, wiping down the chain and applying fresh lube. To avoid removing the chain, stack it on the cassette held in place with a zip tie. Loosen the pinch bolts, remove the crank arm fixing bolt, tap the crank out of the BB with a rubber mallet, clean the BB, install the crank with oval chainrings using grease, adjust the derailleur, re-install the cable, tighten the crank arm fixing bolt to 1.5 newtons of torque, apply initial tension on the pinch bolts, and finish with a torque wrench set at 12-14 newtons.
- Change to semi-oval chainrings by removing bolts with a 5mm allen key, detaching the chainrings from the spider, fitting the big and small chainrings, retightening the bolts, adjusting the front derailleur by sliding the clamp higher on the seat tube, and ensuring clean and precise shifting between the upper and lower chainrings.
