Road Bike, Cycling Forums banner
1 - 5 of 5 Posts

· Registered
Joined
·
382 Posts
Discussion Starter · #1 ·
I was lubing my chain and when I back pedaled, with the chain on the 17 tooth gear. I heard a clicking sound, when I spun the chain backwards. It only happened on the 17 tooth. I couldn't figure out where the sound was coming from. My cassette was filthy, so I decided to take it off and clean it. Hoping maybe I would find my mystery clicking sound. When I took off the wheel and went to loosen the bolt that holds the cassette on. The bolt was already loose. I've changed many, many cassettes and never had this problem. When I tighten the bolt to put on the cassette on. I tightened until I hear 3 clicks. This always seemed to work in the past. My question is. Am I doing anything wrong ? Am I tightening corectly ? Thanx for your help.
 

· Registered
Joined
·
11,555 Posts
The 3-click method isn't reliable - it's thrown off badly by how you define the first click, how good your hearing is and what kind of music you got playing how loudly in the shop.

Cassette lock rings need to be very tight - around 40 Nm torque. That's about 30 foot-pounds, so imagine putting a 30-pound weight on a foot-long wrench. The cassette lockring is one of the few threaded entities on a bicycle that's actually difficult to overtighten unless you're a gorilla.

BTW - you dont need to use a chainwhip to tighten a lock ring.
 

· You talking to me?
Joined
·
736 Posts
Don't know about Shimano, but Campy recommends 50Nm on the cassette lockring. That's a bunch! About the same as a bottom bracket. I wouldn't think that "three clicks" would even be 25% of that.
 

· Registered
Joined
·
203 Posts
Also, some cassettes (e.g. Campy Veloce) use resin spacers that compress slightly under torque. If you don't torque the lockring to spec, the spacers won't compress the correct amount, and the spacing of the cogs could be slightly off. This could affect indexing and shifting performance.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top