Hola or hey everybody!
In Feb 2025 started with 2 bikes (a Pinion and a Rohloff) on a South America bike trip. We departed in Ushuaia, Tierra del Fuego and made it to Concepcion, Chile. Lots of uphill, dust, mud and gravel. The PINION bike was bought used, we are the third owner and has about 10.000 km. We did NOT let it be serviced after buying. 😅🙈
Now the tragedy:
• After 1.000 km the lock ring fell off the Pinion bike and put it on again w/o a lock ring tool bc we did not have one. We used a set of other pliers.
• after 1.500 km: we put on another chain and a new PINION chainring (we were carrying) and let it tighten by two strong dudes in a bike shop.
• now after 3.500 km: the chain ring fell off again and we cannot get it screwed back on.
• it seems that the thread of the lock ring is worn off, so it cannot be screwed back on.
• we think that the lock ring is made of softer aluminum than the hub where it’s screwed on.

What to do? Do u have tippy or help?
- We consider ordering parts from the US or EU to Chile.
Or/end
2) Having the chain ring (with left thread and Aluminum) being manufactured here locally in Concepcion, Valparaiso or Santiago.
by knOlle92
1 Comment
The lockring should be around 10$ to replace
Most likely you didnt get it on correctly when it came lose and you crossthreaded the lockring. They are very easy to damage.
Make sure the threads are clean and you use the right torque. Did have a similar problem (forgot to torque it down) but havent had any issues since then