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[Closed] How often do you True?

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[#3316825]

Just curious, but my disc rotors seem to rub a fair amount. I noticed that I had a bend in the them and so went and bought two new rotors. I've noticed that they have started to rub again too (after 3 months) and the wheels on either side will only spin 3-4 revolutions before stopping - so I'm thinking of investing in a Truing fork.

Is this normal procedure? I change my tires a fair amount (twice a week) but always make sure the wheels is seated properly before tightening the QRs, so I can't see what's knocking them off.

Cheers,


 
Posted : 04/11/2011 3:31 pm
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Might be the way you're lying the wheels down when changing the t[b]Y[/b]res? I think I've slightly bent one rotor in the last 5 years of riding.


 
Posted : 04/11/2011 3:32 pm
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Are the rotors bent or has it just gone out of alignment? Is it just a matter of losening the caliper bolts and adjusting?

Is there a lot of flex in the frame and different tension in the qr is causing slightly different disk alignment?

I cannnot say I've really bent many rotors. I had a set of formulas which were lightweight and I really trashed a rotor hitting a rock, but generally it's not something that's caused many problems.


 
Posted : 04/11/2011 4:19 pm
 GW
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discs are rubbish (too thin IMO)

never ever had one stay perfectly straight. rears are worst and I hardly even use my front brake so kinda proves normal use warps them.


 
Posted : 04/11/2011 4:34 pm
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I have tried the calliper alignment a few times and its definitely rubbing with a wobble - as opposed to rubbing continuously on one side.

I haven't taken this set of rotors off yet, going to do that when I get home from work, but there was a noticeable kink/warp in them the last time.


 
Posted : 04/11/2011 4:54 pm
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In terms of lying the wheels down, I lye them flat between two washing machines (random!) so the disc is floating in the air and not touching anything...


 
Posted : 04/11/2011 4:55 pm
 GW
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must be ****ing hellish carrying two washing machines around incase you get a puncture on ride. great resistance/strength training tho 😉


 
Posted : 04/11/2011 7:21 pm
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I have to do the bendy every once in a while with my rotors. I tend to just press hard with my thumbs. By truing fork do you mean
[img] [/img]?

I change my tires a fair amount (twice a week)
Hells bells! I got so fed up with swapping DH to XC tyres a couple o' times a [b]month[/b], so I built a second set of wheels...


 
Posted : 04/11/2011 7:49 pm
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How often?

Since I got shot of my Mini Monos 4 years ago, never. Magura rotors are worth every penny of the £35 they cost because they're indestructible. 🙂


 
Posted : 04/11/2011 8:33 pm