Chain rings worn?

[mynydd]

Can anyone advise if these need replacing? I fitted a new chain, and it slipped, so I assumed I needed a new cassette. But when I looked at the chainring it seemed worn to me, can anyone confirm? Thanks

 

[Citius]

Yep - not looking too clever...

 

[mynydd]

Ok, thanks for confirming.

 

[winjim]

They look as worn as a very worn thing.

 

[mynydd]

Thanks. Any suggestions as to where to get a replacement online? Will any shimano chainset with the same size rings fit? I only seem to be able to find 10 speed versions, mine is 9 speed, does this matter?
Many thanks again

 

[si_c]

Thanks. Any suggestions as to where to get a replacement online? Will any shimano chainset with the same size rings fit? I only seem to be able to find 10 speed versions, mine is 9 speed, does this matter?
Many thanks again

Which chainset is it?

 

[mynydd]

Tiagra FC-4503 (50,39,30) 170 cranks

 

[Spoked Wheels]

Thanks. Any suggestions as to where to get a replacement online? Will any shimano chainset with the same size rings fit? I only seem to be able to find 10 speed versions, mine is 9 speed, does this matter?
Many thanks again

10 speed will do fine.

 

[si_c]

You should find that any chainrings from shimano fit with the same BCD (bolt circle diameter), you will need, outer, middle and inner if you wish to replace all three. Outer and middle will be 130mm, inner should be 74mm (see here http://bit.ly/1UgxnJ4). You should be able to get them online easily enough (SJS cycles has a good search tool for this, far better than e.g. wiggle).
See below for some possibilities.

Outer: http://bit.ly/1mRjV43
Middle: http://bit.ly/1YOttxK
Inner: http://bit.ly/1OkT2jf

 

[mynydd]

Ah, so I only need to change individual rings? I didn't realise that, thanks. Should save a few quid

 

[lpretro1]

If you use a 9 spd chain on a 10spd it will not be so good as the 10spd chain is narrower. You will find it is cheaper it buy the whole chainset rather than individual rings - you need Sora which is 9 speed

 

[mynydd]

Sorry if I'm being stupid, but why sora? My current set up is tiagra and its nine speed.
Thanks

 

[Crandoggler]

Yours is the old 9 speed Tiagra. Sora is now what Tiagra used to be.

 

[mynydd]

Ah, I see. Many thanks
So if I buy a sora triple, with the the same size cogs, it'll just fit in?
Sorry for all the daft questions

 

[cyberknight]

Check out spa cycles , variety of chainrings and prices.