Headshot Posted May 30, 2018 Posted May 30, 2018 I see comments on the web about pros replacing discs with pads or every 2-3 sets of pads. I have never ever replaced a disc for that reason. I did upgrade one bike to a 203mm front rotor and have swapped other rotors around but on one of my bikes I built up, I am still on the same discs that were on the original bike 4-5 years ago and have done several thousand km. Brakes are still powerful. Am I cruisin for a bruisin?
fanievb Posted May 30, 2018 Posted May 30, 2018 depends on the min value thickness prescribed by the manufacturer
fanievb Posted May 30, 2018 Posted May 30, 2018 https://www.bikeradar.com/forums/viewtopic.php?t=13040167 http://forums.mtbr.com/brake-time/when-replace-shimano-rotors-1074710.html http://forums.mtbr.com/brake-time/when-replace-xt-icetech-rotors-963848.html
droo Posted May 30, 2018 Posted May 30, 2018 Yup. When the disc wears to less than the manufacturer's spec, replace. It's usually 1.5mm.
DieselnDust Posted May 30, 2018 Posted May 30, 2018 Or when the surface is worn unevenly I.e. It starts getting ridges then replace. Over heated disc rotors should also be replaced. Easy spotted by the blue to brown discolouration just off the brake track
Capricorn Posted May 31, 2018 Posted May 31, 2018 Or when the surface is worn unevenly I.e. It starts getting ridges then replace.Over heated disc rotors should also be replaced. Easy spotted by the blue to brown discolouration just off the brake track Define overheated disc rotors? Color just means it was heated to a certain temperature. But why do you recommend it be replaced on color banding alone (caused by oxide layer formation and its effect on incident light)? Pads and caliper seals can be damaged due to sustained heating, but the disc, made of steel?
BaGearA Posted May 31, 2018 Posted May 31, 2018 Yup. When the disc wears to less than the manufacturer's spec, replace. It's usually 1.5mm.this ^ plain and simple
TCTG Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front?
ChUkKy Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front? Crap load more stopping power over a 180 but overkill for a XC type bike unless you only go downhill and weigh 120kg
Kalahari Vegmot Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front?203 looks better.
porqui Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front? 12.7% extra leverage - that's hugeMore area (larger circumference) to dissipate heat
BaGearA Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front?more effective braking power , for everything from trail bikes and upwards
100Tours Posted June 3, 2018 Posted June 3, 2018 Just question, what's is the main diferrence in 203mm vs 180mm in front? mostly whether you stop fast enough or not?
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