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RADBMX.CO.UK  |  Market Place  |  Trade  |  chain ring
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Author Topic: chain ring  (Read 2140 times)

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Offline login_user

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chain ring
« on: January 04, 2018, 03:45 PM »
 Swap my takagi excellent condition silver 44T chain ring for black or silver suntour PCD chain ring

Offline That Swan Guy

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Re: chain ring
« Reply #1 on: January 04, 2018, 03:54 PM »
have you missed some numbers off?
Who wants to ride with Eddie Fiola?

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Re: chain ring
« Reply #2 on: January 04, 2018, 03:55 PM »
what have I missed?

Offline That Swan Guy

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Re: chain ring
« Reply #3 on: January 04, 2018, 03:57 PM »
there are different PCD sizes
Who wants to ride with Eddie Fiola?

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Re: chain ring
« Reply #4 on: January 04, 2018, 04:00 PM »
I thought the suntour PCD used the smaller spider. My takagi one is too big for the spider I have, yet I have a yellow suntour chain ring which fits.

Offline That Swan Guy

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Re: chain ring
« Reply #5 on: January 04, 2018, 04:06 PM »
PCD, or BCD as it is more normally called, is the diameter of the chain ring bolt placement. there are two main sizes: 110 & 130. Some companies make rings with only one size eg Sugino is 110 and Takagi is 130. That is why your ring does not fit your spider. Other companies like Tuf Neck cater for both sizes in both their discs and their rings. When you buy a ring or spider with only a single set of holes you need to stipulate which PCD/BCD you need to avoid the problem you currently have.
Who wants to ride with Eddie Fiola?

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Re: chain ring
« Reply #6 on: January 04, 2018, 06:36 PM »
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Offline That Swan Guy

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Re: chain ring
« Reply #7 on: January 04, 2018, 06:42 PM »
top one is 110 bottom is 130
Who wants to ride with Eddie Fiola?

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