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PostPosted: Sat Oct 31, 2020 3:03 am 
Dirt Disciple

Joined: Thu Jun 24, 2010 8:56 pm
Posts: 92
Location: Omaha, NE
Not sure where this fits but i just purchased a Serotta and the rear takes a disc brake I believe but the mount point is unlike anything I have seen before. I am hoping that somebody could thrust a bit of knowledge on me. Its a XC Serotta, possibly a custom build. Dont really have any more info than that. Any help would be appreciated!


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PostPosted: Sat Oct 31, 2020 5:58 am 
Dirt Disciple

Joined: Thu Jun 24, 2010 8:56 pm
Posts: 92
Location: Omaha, NE
It is apparently an old Hayes 22mm mount from the early days of disc brakes. Cheers


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PostPosted: Sat Oct 31, 2020 6:21 am 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32750
You may be able to use one of these

https://www.ebay.co.uk/itm/A2Z-Bicycle- ... Sw8Ehe1l44

Image


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PostPosted: Mon Nov 02, 2020 5:22 pm 
retrobike rider
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 2580
Location: A wretched hive of scum and villainy...
That's a Hayes 22mm standard mount...here are the standard dimensions.
Normal ISO mount adapters might work, but often foul the seatstays. Your frame's pretty big, so you might get away with it.

If not, you should be able to make a Hayes/Post Mount adapter and work around your seatstays in the middle.
Hayes 22mm standard.
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ISO Rear Post mount
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Alternatively, if you're not devoted to Post Mount, and there's enough space under the seatstays, it may be easier to go to a modern Flat Mount rear caliper.
Ironically, it's very close to the original Hayes standard from 20+ years earlier. :roll:
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Thread here on MTBR: https://forums.mtbr.com/brake-time/22mm ... 20722.html

All the best,


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PostPosted: Mon Nov 02, 2020 5:46 pm 
Dirt Disciple

Joined: Thu Jun 24, 2010 8:56 pm
Posts: 92
Location: Omaha, NE
Dan

Awesome! Thanks so much for the information!

Chris


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