New chainring time..

[Arjimlad]

I think it's time to pop a new chainring on this but I am having trouble making sure I obtain the correct one. My chain's slipping again despite being within 0.5 and 0.75 on the wear detector, and on a new cassette too. A new chain is on order.

It's an 8-speed Claris transmission with an FSA Tempo triple chainset. The BCD is 130mm and the big chainring has 50 teeth.

Any tips for getting the correct chainring please ?

 

[Nigelnightmare]

It's an 8-speed Claris transmission with an FSA Tempo triple chainset. The BCD is 130mm and the big chainring has 50 teeth.

The only other thing you need is the amount of fixing/mounting bolts it has.
So 8 speed, 50 tooth, 130 BCD & (X) bolts.
You 'can' match it by getting an FSA brand but other's will fit.

HTH

 

[Arjimlad]

Thanks @Nigelnightmare - it has 5 bolts - so will other brands fit ?

The only other marking on it is S-9/8 which I guess is 9 or 8 speed compatibility.

 

[si_c]

Give spa cycles a look, they should be able to provide what you need. Swapping them is quite easy.

 

[Arjimlad]

Thanks - looking like Stronglight offer something which says it is compatible.

 

[andrew_s]

https://www.spacycles.co.uk/m2b0s210p3387/SPA-CYCLES-130-BCD-Zicral-Outer

Stronglight Zicral is similar but costs more; Stronglight Dural is a bit cheaper, but quicker wearing.

A possible minor advantage of Stronglight is that if you've a chainset with one of the 5 bolts hidden behind the crank arm, the anti-drop pin on the outer is screw in and can be put in two locations, so it can do its job and stop the chain getting stuck between crank and outer chainring in the event of shifting mishap. Most other brands have a fixed location pin that assumes the crank is between bolts.

 

[Racing roadkill]

Sounds like an excuse for N+1

 

[Sharky]

A new chain is on order

I would wait and try the new chain first before you change the chain ring.

 

[Arjimlad]

I would wait and try the new chain first before you change the chain ring.

Thanks - Do you think those teeth have more life in them ? I'm not sure..

 

[Sharky]

Thanks - Do you think those teeth have more life in them ? I'm not sure..

No expert on chainrings. Modern rings have teeth designed with shapes to aide changing - sometimes confused with signs of wear.

But have put old chains on new cassettes and vice versa and had chain slipping. New chain/new cassette seemed to solve it.

 

[Racing roadkill]

No expert on chainrings. Modern rings have teeth designed with shapes to aide changing - sometimes confused with signs of wear.

But have put old chains on new cassettes and vice versa and had chain slipping. New chain/new cassette seemed to solve it.

True. As the old adage goes, you can’t teach an old cog new links.

 

[DCBassman]

True. As the old adage goes, you can’t teach an old cog new links.

*groan*

 

[Sharky]

Bradley Wiggins was having similar problems once, so took it back to the team mechanic.

The mechanic took one look and said "Sorry, but I can't let a knight like you out on a cog like this."


Now you can all *groan* ...

 

[Ajax Bay]

I think it's time to pop a new chainring on this but I am having trouble making sure I obtain the correct one. My chain's slipping again despite being within 0.5 and 0.75 on the wear detector, and on a new cassette too. A new chain is on order.
It's an 8-speed Claris transmission with an FSA Tempo triple chainset. The BCD is 130mm and the big chainring has 50 teeth.

I would wait and try the new chain first before you change the chain ring.

This ^^^. It's very likely your chain is slipping because you've fitted a new cassette yet continued to use a used chain, one already worn to 0.5-0.7%. It's much more likely this than the chainring.
Answering the question: I'd go to Spa Cycles too/first: looks like £27 for a 130 BCD, 5 tooth ring.