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203mm = 200mm Disc ...
 

[Closed] 203mm = 200mm Disc Size Question

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[#408802]

I have been lucky enough to get hold of a front wheel that comes with a 200mm disc on it. Does this mean I need a 20[b]3[/b]mm adapter to get it to work? or do I have to track down a 200mm adapter?


 
Posted : 20/03/2009 6:13 pm
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or change the disc over to the size you have


 
Posted : 20/03/2009 6:18 pm
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Well, assuming it's been made exactly to spec it's 3mm larger across, so only 1.5mm on each side (if you see what I mean). Personally, I'd take a washer etc out from the adapter mounts and call it good enough.

smurf


 
Posted : 20/03/2009 6:18 pm
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Yes Junkyard, seems like the right thing to do. However it is a [b]5[/b] bolt disc.


 
Posted : 20/03/2009 6:21 pm
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I thought the 5 bolt rotors were 205 mm. Certainly the ones are on my enduro 4 calipers. Still, 2.5mm on the radius is not much. I plan to fit some 165mm rotors to some Avid BB7 road calipers (that normally take 160) and fine tune it with a couple of washers.


 
Posted : 20/03/2009 6:28 pm
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As long as you've got >1mm clearance between the edge of the disc & the caliper (for expansion) it should be fine.


 
Posted : 20/03/2009 6:37 pm
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Try it and see. What's the worst that could happen?


 
Posted : 20/03/2009 6:57 pm
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Running a 183disc on a 185 adapter, no trouble here.


 
Posted : 20/03/2009 7:04 pm