Moderator: Moderator Team
While they may be mature tech in other sports (F1, MotoGP), those concepts are poorly executed for MTBs right now.
Steel is real, in this case.
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http://www.kcnc.com.tw/products.php?fun ... _parent=19
Personally I use aluminum-based rotors for road, but for mtb I like Carbon-Ti, which may be the lightest quality steel.
There are prior year threads on this very topic as well.
Ice tech works very well for what its designed for (keeping heat at bay during long protracted braking) but for XC and light to moderate trail riding it's simply not needed.
KCNC or Ashima are good lightweight options, a little bit heavier but a lot cheaper there is alligator or for a small weight increase but a full braking surface there is A2Z.
I use an A2Z on the front and an alligator on the rear and it gives the combination of light weight and decent braking on harsher terrain that suites me.
Budget 26" HT build viewtopic.php?f=10&t=110956
1. they do not stop as well and can cause juddering at the front
2. they wear pads quickly
The best all round rotor (good stopping ability, lightweight and price) is Hope SAW (not the latest version as these have become heavier), otherwise check out the Deckas rotor which is much cheaper, not much heavier but not quite as good for stopping as the Hope.
mattr wrote:If you have a pro mechanic with a pro schedule and a pro level of ability, you'll be fine.
Otherwise, i'd think long and hard about that!
Maybe try 3 steel and 3 Al or 3 Ti and 3 Al.
Second on the 3 Ti 3 Al bolts. It may be better to get the torque on 6 Ti bolts and after the rotor is mounted replace a Ti bolt with Aluminum one at a time, to get to the 3 Ti and 3 Al more reliably.
Think about what could happen if the rotor parts company with the hub when you desperately need to stop to avoid the oncoming car/ditch/tree vs the weight saving.
IMO not worth the risk; you'll probably pick up more weight in mud on the tyres than the weight saved by ditching 3 bolts.
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