Thorn Cycles Forum

Technical => Transmission => Topic started by: rafiki on August 25, 2018, 04:55:00 pm

Title: Tightening chainring bolts....
Post by: rafiki on August 25, 2018, 04:55:00 pm

I am finding difficulty completely tightening two of the four chainring bolts on my Sterling. Once a certain tension is reached the threaded sleeve the bolt tightens into begins to turn with the bolt.What is the correct way to restrain the sleeve so the bolt can be tightened fully?

Title: Re: Tightening chainring bolts....
Post by: bikerwaser on August 25, 2018, 05:04:49 pm

You need one of these:

http://www.wiggle.co.uk/shimano-chainring-peg-spanner/?lang=en&curr=GBP&dest=1&sku=5360326023&kpid=5360326023&utm_source=google&utm_term=&utm_campaign=UK_PLA_Accessories&utm_medium=base&utm_content=mckv|sUYPiuV9K_dc|mcrid|67090840622|mkw||mmt||mrd|5360326023uk|mslid||&mkwid=sUYPiuV9K_dc&pcrid=67090840622&prd=5360326023uk&pgrid=17507340302&ptaid=aud-131236049102:pla-133611967742

Title: Re: Tightening chainring bolts....
Post by: rualexander on August 25, 2018, 05:30:02 pm

Or one of these,

https://www.sjscycles.co.uk/tools/icetoolz-chainring-bolt-tool/

https://www.sjscycles.co.uk/tools/park-tool-cnw2-chainring-nut-wrench/

https://www.sjscycles.co.uk/tools/birzman-chainring-nut-wrench/

https://www.sjscycles.co.uk/tools/topeak-chainring-nut-wrench/

Title: Re: Tightening chainring bolts....
Post by: rafiki on August 25, 2018, 06:16:22 pm

Thanks both. One on order now.

Title: Re: Tightening chainring bolts....
Post by: pinkbunnyok96 on December 05, 2018, 12:37:39 pm

had the same problem a few years ago as a tempory solution i used some washers a permanent solution got the machine shop to grind the nuts down