Jon Alty Posted November 19, 2010 Report Share Posted November 19, 2010 (edited) Im thinking about changing my disc rotor, and maybe going from a 180mm to a 190mm. Ive been thinking about it, and surely changing sizes of rotors you need adaptors to move the calipers further away, or the rotor wont fit in the calipers? Or does the 1cm not make that much of a difference that you need adaptors? Cheers just wanted to make sure before accidently buying the wrong rotor Edit: Also instead of making a whole new topic, can someone just advise me on the difference between water and mineral oil bleeds in HS33's (with respect to hold/bite)? I like to think of myself as quite a logical person and i like to think about the implications of doing something mechanical before actually doing it, so also thinking about this; does the water not make the inside and the calipers rust, and am i not right in saying water is EVER so slightly compressable, whereas Hydraulic Mineral Oil is not? If so why use water apart from the cost side of things? Edited November 19, 2010 by Jon Alty Quote Link to comment Share on other sites More sharing options...
Matt Burrows Posted November 19, 2010 Report Share Posted November 19, 2010 190mm is a special size for certain forks like Koxx which have a +30 disc mount. What brake do you use? If you have a 180mm rotor now then the next size up will be 200 or 205mm. And yes you will need an adaptor. Quote Link to comment Share on other sites More sharing options...
rab shropshire Posted November 19, 2010 Report Share Posted November 19, 2010 ideally you need a new adaptor to change your disc size, altho i have succesfully bodged a 180mm adaptor to fit a 190mm rotor with some longer bolts and extra spacers. To be fair you won't notice much of a difference going from 180mm to 190mm, are you riding mod or stock Quote Link to comment Share on other sites More sharing options...
Jon Alty Posted November 19, 2010 Author Report Share Posted November 19, 2010 (edited) ideally you need a new adaptor to change your disc size, altho i have succesfully bodged a 180mm adaptor to fit a 190mm rotor with some longer bolts and extra spacers. To be fair you won't notice much of a difference going from 180mm to 190mm, are you riding mod or stock I got a stock, and yeh i thought u would need adaptors Atm ive got an Avid BB7, i think it might actually be a 185mm rotor atm. Im not looking to change it to a 190mm for the incerased difference, just the disc i want comes in 180mm or 190mm and i just pressumed if im going to replace it i might aswell get one as big I can. Now im even more confused about what size to get . Not many companies do 185mm, so would 190mm bodged be best or just go for 180mm and have a slightly smaller rotor? I guess if i go for 180mm i wont need any adaptors? Edited November 19, 2010 by Jon Alty Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.