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Unusual disc mount
 

[Closed] Unusual disc mount

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[#9794735]

Does anyone know what type of mount this is? Its like an IS mount but in a strange position!Im trying to put a 180mm rotor on it. So, are there any adapters I can use for a modern XT brake or does anyone have a cheap brake I could put on it?!?

Im building up a frankenbike and had an old pair of Spinner (I think!) Cargo forks, 180mm from maybe 2012 or around then, never used.


 
Posted : 25/01/2018 10:09 am
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Posted : 25/01/2018 10:20 am
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Looks like an old Boxxer mount


 
Posted : 25/01/2018 10:45 am
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Is it not just an IS for a 203mm (or similar) rotor?


 
Posted : 25/01/2018 11:22 am
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I did try replying to this earlier. Google Marzochhi disc mounts and see if any of the online discussion has measurements that are similar. I remember some bombers from the late 90's and early 2000's has an odd disc mount that was like IS but not.


 
Posted : 25/01/2018 3:17 pm
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I think the top lug normally sticks out higher on the marzochhi though. Might just be a rotation though as you get with PM and IS mounts on different frames and forks.


 
Posted : 25/01/2018 3:18 pm
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Forum keeps rejecting my replies... I dont know what's going on here, but I'll try to post without linking to anything.

There is a video on youtube (titled "Falando Sobre a Spinner Cargo 178") of a similar fork, which mentions "Boxxer" at the 2:38 minute mark. There is also an older STW topic titled "Officialy confused – Boxxer brake adaptor".

l.e. Looks like the links were the cause... the "new" forum software is pants.


 
Posted : 25/01/2018 3:31 pm
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Might help if we knew what fork it was? But probably either what Hatter or Njee20 said, either a 203mm IS mount or a Boxxer mount. Although I thought the Boxxer mount was closer to the Marzocchi mounts (i.e. it looks like a normal IS mount position, but isn't)

Marzocchi 20mm mounts were just spaced differently IIRC, they took the dimensions for a 100mm spaced fork, and spread the legs by 5mm each side to make the 20x110mm forks, so they needed a 5mm thick spacer.


 
Posted : 25/01/2018 3:35 pm
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Whatever the mount is in that video at 2:38, thats it alright. Trying to find it here now!


 
Posted : 25/01/2018 6:17 pm