105 5800 chain rings

Have started to get a little chain slip in big ring when putting the power down, cassette has recently been replaced and chain is brand new. Having a close look at the chain rings last night it looks like it's a bit worn down, it's covered pretty much bang on 10k miles.
After a search on Bikesy looks like it might be as cheap to buy a new crankset than chain rings (£85 crank compared to £60 big/£15 small and sell bits I don't need) - unless I've been looking in the wrong place?
After a search on Bikesy looks like it might be as cheap to buy a new crankset than chain rings (£85 crank compared to £60 big/£15 small and sell bits I don't need) - unless I've been looking in the wrong place?
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But yes, for the newer Shimano stuff, the price of the big chainring can be pretty eye watering...
46 at Ribble (52T and 53T only)
I actually think the new Shimano chain rings are made of some sort of cheese!
Might even go Tiagra crankset for about £50 instead as I've just bought a Supersix with Tiagra and (long term) had been planning on swapping that groupset to the winter/commuter.
Ended up buying a new crank set as it seemed more cost effective. Stayed with 105.
Chopper Mk2
Grifter
Merlin Malt-CR
Revolution Courier 2
Not sure of there are any aftermarket options to these chain rings, the pain is the 4 arm configuration.
https://www.lordgunbicycles.co.uk/shima ... GwodMC4MMw
The only thing that has changed since this started is a new chain, and I put an extra link in this one compared to last (using Park's largest cog and largest chainring method - see below). The additional link couldn't be causing the slip, could it?
http://www.parktool.com/blog/repair-help/chain-length-sizing#article-section-3
My guess is that after 10k it will be the chainring but pics will help determine that.
Mine were like a ninja throwing star by the end.
I don't think an extra link in the chain will make that difference to be honest.
https://plus.google.com/photos/102169385458460802240/album/6346473504209442481/6346473503460763906?authkey=CJzCwpq668zuEw
It looks like it's had a hard life...
First I would check the chain and see if there are any stiff links as that may be the culprit. If not then is this only happening in the big ring, what about the small ring? If both then I would say its not the chainring, if its only happening in the outer ring then my guess is that it is worn and needs replacing and the new chain has exposed this more quickly?
I would also check when this is happening, are you crossing the chain (big ring & big sprocket at back), shouldn't make much difference but you never know?
Also is your front mech rubbing when this happens as that may have an influence.
worth checking all these things but the most telling for me is if it is happening only in the big ring then its time to replace.
Majority looks alright to me - just 2 or where they are almost missing. Was away last weekend so hasn't been washed/lubed for almost 2 weeks now.
Only happens in big ring, but will check for a stiff link.
I don't cross. It usually happens grinding up slow inclines but happened accelerating at over 20mph last night.
Will check this also, but I only get a bit of rub in top end sprockets (11/12 etc) so shouldn't affect slower grinding as above.
If its not a stiff link (and as its just in the big ring i suspect its not) then I think you are looking at a new chainring.
When mine started to go it got worse very quickly, a new chainring will sort it but it ain't a cheap fix as you already know, and too be fair you have done some pretty decent mileage on the one you have now.
spesh allez