Ring wear - whats gone wrong?

ilm_zero7

here the issue: this chainset is 1500m old but the big ring teeth are shot to pieces and irregular, yet the small ring are pristine - why - they both get the same use?


the bike and chainset were brand new together - why has the happened?
something I have done?, a defect?
do I need to replace , and if I do what stops this happening again?

Captain Fagor

Ring Wear?

Felt So Good?

There's a gag in there somewhere....

desweller

The big ring teeth look less worn to me than those on the the small ring.

The teeth are irregular to aid shifting. When they are worn they become pointy.

Buckled_Rims

DesWeller wrote:

The big ring teeth look less worn to me than those on the the small ring.

The teeth are irregular to aid shifting. When they are worn they become pointy.

+1

If the teeth were worn they'd be more "buzz" saw shaped. Many riders think their teeth are broken or worn when in fact they are there the aid shifting and also help clean the gunk off the chain.

kettrinboy

the teeth look ok for a good few thousand more miles yet but your chain looks a bit rusty and dry on the pic, keep it well lubed, because once you get a stiff link due to corrosion they wont last very long and a dry chain will wear the rings out fast.

ilm_zero7

kettrinboy
Rust! the very thought of it! certainly not - I bike gears and chain are stripped and cleaned and relubricated every 2 weeks here because of the saline air, fine sand and TSE (irrigation water - not pleasant)

So I apreciaated your advice and put the rust suggestion down to my cr4p camera skills - better and smaller image attached.

Ben6899

Looks perfectly normal. The squared-off teeth aid shifting.

balthazar

Those chainrings are fine. Have a look at some brand-new ones – you'll see the tooth profiles are the same.

ilm_zero7

Guys _ I am reassured - thank you all for your comments and knowledge

kettrinboy

yep that looks a lot better, i cant stand a rusty chain either,just had a look at my chainrings which have done 8000 miles and they look virtually the same as yours.