just been out and about on my new voodoo wanga ss build (its a beauty), currently running 160mm rotors with hayes 9s...took it down a fairly steep/fast downhill section nothing too crazy, anyways when i finally managed to stop the rotors were HOT!
I mean hot hot. How long can you run them that hot before the fluid boils etc?
planning to ugrade rotor size on the front to compensate but just wondering what would happen.
what do you mean by hot hot? like glowing red? cos if they were only hot enough to leave a burn on your skin then surely that's normal hot?
Hayes Nines don't cook easily, a lot of people use them in the alps no problems. I've had the discs get hot enough for water from my camelbak to boil off as it hits the rotors but the fluid in the brakes was fine.
Unless you're alpine riding 160's should be ok.
iv always run 203mm rotors on my proper bike and they get hot but not so hot i can smell them burning.
got a bit of water on them after run, hissed and evaporated immeadiately.
they wont glaze my pads or anything will they?
cheers
Brake like you mean it rather than dragging them and they shouldn't boil.
Dragging rather than braking in short hard bursts does get the brakes hot.
Mine on the tandem have been to hundreds of degrees centigrade - hot enough to blue the discs.
IMO the hotter you get them ( up to the point of fade occuring) the better the pads cure and the longer the pads last. Its suprising just how hot they can cope with. They need a certain amount of heat in tehm to work properly
Could you smell them ?
Bikes and trucks are the same, if you can smell the brakes while riding/driving, they are starting to fade. Up to that point, don't worry about it. 🙂
yep definately got a wiff of burning....cool in that case i shall stop worrying and stick to 160mm.
cheers all
i had some juicy fives mega hot on a long descent in a pack of about 20 riders, so on the brakes in traffic.
managed to turn a 160mm rotor blue, and the smell was mad. still worked fine afterward though.
Steel turns blue at around 400deg C
