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New rotor - which e...
 

New rotor - which end?

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[#13271048]

All the same size and found a new light one so which end of an XC / trail bike should it go on e.g which end assumes the most wear?

No I don’t have measuring tools, just need a rough idea, I’d assume it’s the front?  Or leave the heavier one on the front for hard braking duty?


 
Posted : 29/05/2024 7:28 pm
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My rear wears out twice as fast as the front, but that might just be my riding style causing that, yours may differ?


 
Posted : 29/05/2024 7:31 pm
dc1988, phil5556, dc1988 and 1 people reacted
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The one with best performance and least chance of folding up on the front.


 
Posted : 29/05/2024 8:32 pm
zerocool and zerocool reacted
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My rear wears out twice as fast as the front, but that might just be my riding style causing that, yours may differ?

Same. I assume if I only ever rode stuff well within my comfort zone I’d probably wear them evenly, but when I get scared my back brake takes a hammering 🤣 I’ve never cooked a front brake in the Alps…


 
Posted : 29/05/2024 8:59 pm
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Seems sensible.   Its a Quaxar Axis floating rotors, so I'll put my nearly new on on the front, and the new new one on the back.   I'm moving SRAM centre line to my spare/mud wheels (Silts with Mk1 Forekasters mounted), which seems a better idea for the wet anyway.

Thats a few more grams off the Epic 😀


 
Posted : 29/05/2024 9:25 pm
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I would have brakes at both ends, the weight saving of just running one rotor simply isn't worth the performance pay-off...

If you do go with just the one, some sort of spacer in the unused caliper is a good idea or, for maximum weight savings, remove the whole lever/hose/caliper ensemble as one.


 
Posted : 30/05/2024 8:46 am
zerocool, jacobff, a11y and 3 people reacted
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Given your front wheel travels further, always the front, if you only have one performance disc.


 
Posted : 30/05/2024 10:22 am
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I use to think like the OP, then I sheered off a light-weight rotor...

Now I run a larger standard rotor than I think I need, at both ends - not worth the weight saving IME.

I'm not totally against saving weight, my FS while having 203mm rotors front & back does only have a 2-pot calliper on the rear, as 2-pot is more than enough to lock it.


 
Posted : 30/05/2024 10:25 am