Missing chain roller?

[erik]

Lubing the chain on my sv, I noticed one of the rollers was missing:
<img src="http://i38.photobucket.com/albums/e118/edorp/sv650s/th_IMG_2392e.jpg"> (http://s38.photobucket.com/albums/e118/edorp/sv650s/?action=view&current=IMG_2392e.jpg)

It's a EK 525 heavy duty (non-o-ring) chain. The recommended chain for the sv is a 525 o-ring chain.

Is this likely due to a manufacturing defect in the chain or bad luck or what? I also found the nut holding the front sprocket on was loose, although the bent lock washer thing did its job to keep it from coming off completely.
I guess the rollers on an o-ring chain are the same as non-o-ring, since the o-ring only seals the grease in the pins between the links, the rollers still depend on chain lube, therefore it's unlikely the roller failed because it's a heavyy duty chain rather than an o-ring chain?

I need to get a new chain before the motott track day on friday!

[Jantar]

It is unlikely to be a manufacturing defect, it is most likely that the roller has siexed, worn unevenly and split. This mwill also have caused additional wear to both sprockets. So replace chain and sprockets asap.

[malcy25]

Lubing the chain on my sv, I noticed one of the rollers was missing:
<img src="http://i38.photobucket.com/albums/e118/edorp/sv650s/th_IMG_2392e.jpg"> (http://s38.photobucket.com/albums/e118/edorp/sv650s/?action=view&current=IMG_2392e.jpg)

It's a EK 525 heavy duty (non-o-ring) chain. The recommended chain for the sv is a 525 o-ring chain.

Is this likely due to a manufacturing defect in the chain or bad luck or what? I also found the nut holding the front sprocket on was loose, although the bent lock washer thing did its job to keep it from coming off completely.
I guess the rollers on an o-ring chain are the same as non-o-ring, since the o-ring only seals the grease in the pins between the links, the rollers still depend on chain lube, therefore it's unlikely the roller failed because it's a heavyy duty chain rather than an o-ring chain?

I need to get a new chain before the motott track day on friday!

Bottom end chains IIRC have rolled rollers (Ie a strip folded into a cylinder), not solid rollers. I used throw the odd roller on the cheap chains I used to use.

I'd up spec your chain quality a little.

the nut being loose can happen, if the nut was never quite tight enough first time which has allowed the sprocket a touch of movement, which causes further fretting and more "loseness" the nut won;t have moved, rather the whole sandwhich nut, washer, sprocket has lost the compressive force that is the tightening torque.

[Max Preload]

Bottom end chains IIRC have rolled rollers (Ie a strip folded into a cylinder), not solid rollers. I used throw the odd roller on the cheap chains I used to use.

Curled BUSH, which is inside. I've never seen a curled roller.

[Pedrostt500]

Time for new chain and sprokets, you can get good quality motorcycle chain from some engineering transmission supply shops, a lot cheaper than motorcycle shops, you just need to hunt around a bit. Jhon Brooks Ltd, is worth a try.

[howdamnhard]

Time to get a good quality new chain. Check your sprockets to.

[R1madness]

Time to get a good quality new chain. Check your sprockets to.

all chains are not created equal. this is not the right chain for your bike. you should be running a solid bush o ring as aminimum, not a rolled bush heavy duty. dont be fooled by the heavy duty tag. it only referes to the side plates. there is a reason cheap chains are cheap.