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 Post subject: XT M770 & XT M780 Outer Chainrings
PostPosted: Thu May 16, 2013 4:11 pm 
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Posts: 1266
Location: Ockendon
I've a XT M780 chainset:

Image

I need a new outer chainring as it's currently sharp enough to cut stone...

Thing is I can only seem to find outer chainrings for the M770 and that looks like the arms are a different design:

Image

It could just be an optical thing - does anybody know or have any experience?

Then given that I have the M780 - does anybody have any alternative suggestions to the Shimano chainring that is £50+?

David

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 Post subject: Re: XT M770 & XT M780 Outer Chainrings
PostPosted: Thu May 16, 2013 6:35 pm 
Posts: 238
Same BCD 104. The holes are in the same place and would be interchangeable. I have a spare 36 t ring with a pin missing. U could borrow to line it up if u wanted to check.


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 Post subject: Re: XT M770 & XT M780 Outer Chainrings
PostPosted: Thu May 16, 2013 7:05 pm 
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Posts: 1266
Location: Ockendon
Thanks Ade, I managed to get a 780 42t ring on ebay so it will still look the same...

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 Post subject: Re: XT M770 & XT M780 Outer Chainrings
PostPosted: Sat May 18, 2013 3:45 pm 
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Posts: 715
Location: W.Thurrock, ESSEX
Ones 10spd, the other is 9spd.... Chain ring will be slightly thicker, but dont think you'll have a problem.

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 Post subject: XT M770 & XT M780 Outer Chainrings
PostPosted: Sat May 18, 2013 7:53 pm 
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Posts: 1266
Location: Ockendon
Nah, 770 comes 9 or 10 speed mate.

Got a 780 in the end anyway so the Corratec should be able to cope with the big ring :)

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