I have a Commencal Supreme DH frame. The rear mount appears to be set up for a 180/185mm rotor. Is a simple 20mm adaptor easy to get hold of? Is it a case of a 20mm front adaptor fitting the rear also? Does anyone have one or know where i could get a suitable mount adaptor?
IS mount? frames usually are in which case the disc size is dependent on the calliper if IS caliper or adaptor if using a post mount caliper
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I got some recently from here. They seem to stock pretty much any configuration you might need.
The front and rear ones I got were different shapes.
Check also whether the calipers/frame are IS or post mount, as well.
What year supreme is it?
I had a 2008 version which would only take 203mm rotors / disc.
2008 V1 model had its own independant caliper post mount.
V2 + V3 uses the IS mount which you then ave to use a adaptor if using post mount.
[url= http://www.hopetech.com/webtop/modules/_repository/documents/HopeBrakemounts2012.pdf ]Hope Tech Adaptors[/url]
This will help selecting the correct adaptor
ok, it would ascertain i have made a couple of faux pas.... firstly having a couple drams whilst doing bike maintenance and secondly the rotor is a 205mm hope floating which causes rubbing on the frame mount. Which is indeed a 200mm standard mount.
so, anyone want to swap a 205mm mono6 floating rotor for a 200mm rotor??
What year of frame?
Which part of the disc is rubbing, the outside diameter or the rivet heads?
its a 2008 im sure. the rivet heads rub off the frame mount. I used slightly larger cone washers to sort the extra couple mm of the 205mm rotor. I think a 200mm rotor is the option i may take...
ye thats the one.
No it's got nothing to do with the rotor size.
What I had to do was machine small amount off the mount which sorted the problem.
Only other way would be to run solid rotor rather than running floating.
Ahh, yeah, i noticed that on one of the other pictures of yours. May give that a bash. May just use a solid rotor until i find somewhere to machine it.
I can sort that if you want to send it up to me?
Cheers, i will keep that in mind. I work up at the university so i will pop into the engineering dept and see a colleague first.