Tiagra triple inner ring

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budgie
Posts: 3
Joined: 26 Oct 2014, 11:50am

Tiagra triple inner ring

Post by budgie »

Hi all,

Am looking for smaller inner ring to fit a Tiagra triple chainset. The standared Shimano is 30tooth.Am hoping to find something around the 26/28 size.
Anyone any ideas where I can find one please ?

Regards
the snail
Posts: 341
Joined: 5 Aug 2011, 3:11pm

Re: Tiagra triple inner ring

Post by the snail »

Spa cycles, assuming you've got the old 5-arm 74mm bcd design. If it's 4700 tiagra, then I think you're stuck with what you've got.
budgie
Posts: 3
Joined: 26 Oct 2014, 11:50am

Re: Tiagra triple inner ring

Post by budgie »

Hi thanks for pointing me in the right direction.
The unit I have is part ref fc4703 ,I'll call spa Monday
Brucey
Posts: 44705
Joined: 4 Jan 2012, 6:25pm

Re: Tiagra triple inner ring

Post by Brucey »

http://si.shimano.com/pdfs/ev/EV-FC-4703-3934A.pdf

shows an unevenly spaced bolt circle. I'm not sure that anyone makes aftermarket rings to fit that, and shimano offer one choice only.

cheers
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