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PostPosted: Mon May 02, 2011 1:04 pm 
Retro Guru
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Joined: Wed Apr 04, 2007 1:03 pm
Posts: 253
Location: Surrey
Hi all,

I want to change a 42 tooth FC-1055 Chainring from a 7 speed setup to a 39 tooth.

Will a Sora FC-3300 39 Tooth work ok ?

It fits in terms of BCD and says it a SG one.

Many Thx


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PostPosted: Mon May 02, 2011 8:11 pm 
Dirt Disciple
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Joined: Mon Feb 07, 2011 8:28 pm
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Location: North Essex
Aren't the Sora's steel? ISTR that because of this they're thinner, and that they end up too close to the outer ring = chain rub. I'm not certain, though - perhaps someone else has experience of this?


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PostPosted: Tue May 03, 2011 8:43 am 
Gold Trader
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Simon Daw wrote:
Aren't the Sora's steel? ISTR that because of this they're thinner, and that they end up too close to the outer ring = chain rub. I'm not certain, though - perhaps someone else has experience of this?


thin spacers should sort that


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PostPosted: Tue May 03, 2011 10:30 am 
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Thx all,

Some guys selling spacers on ebay.

What width you rekon?

I remember those gold looking spacers on early deore chainsets, alas a quick look in my old bits box revealed nothing.

Many Thx :)


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