FSA Gossamer Chain Rings

[Jimmy Welch]

Hi I'm replacing the large ring on the above chain ring but when I bolt it back together with the old smaller ring the 2 are too close to allow the chain to bed properly , I've tried different ways round all the rings are lined up but it's flumexed me

 

[Jimmy Welch]

Hi I'm replacing the large ring on the above chain ring but when I bolt it back together with the old smaller ring the 2 are too close to allow the chain to bed properly , I've tried different ways round all the rings are lined up but it's flumexed me

 

[Sharky]

Presume all is OK on the big ring, just when you drop onto the small ring, the chain is too close to the outer ring?

Try putting the old ring back on to confirm that it used to be OK, then if OK, compare minutely the old and new outer ring, looking for a difference.

Also check the inner ring. Are the teeth offset? Can you turn the inner ring round to make the off set further away?

You've probably already had these thoughts and tried them, so my ideas probably don't help, but I wish you luck in finding the problem/solution.

 

[Jimmy Welch]

Cheers yes I tried it with the old ring and it's the same out come both rings are virtually flush , it's something simple I'm doing wrong I'm sure but it's a bigger

 

[Sharky]

Is it an orthadox 5 arm spider and 110 bcd type? Presume the rings are on opposite sides of the spider and not bolted together on the same side.

 

[Jimmy Welch]

Hi it's a 5 arm spider , and yes they are bolted together on the drive side , is this wrong ?

 

[Sharky]

The inner ring should be on the inside of the spider and the big ring on the outside of the spider.
Is this how you have it or both rings on the outer side of the spider?

 

[Jimmy Welch]

Can't thank you enough , it's 12.30 am and I've just been into the garage to fix it and it's worked beautifully , now I can sleep easy I knew it must have been something very simple thanks again for you help

 

[Sharky]

Well done