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Old 08-25-2009, 04:49 PM   #1
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Ever cut down bike rotors?

Just wondering if anyone on here has ever cut down their front brake rotors???
I have seen it mentioned other places, but have never seen anything solid.

Just weighing my options as OEM or Galfer rotors, doesn't matter, run about $576 for the two....
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Old 08-25-2009, 06:32 PM   #2
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never heard of anybody turning moto rotors.
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Old 08-25-2009, 06:36 PM   #3
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wouldnt do it, they are already so thin to begin with
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Old 08-25-2009, 08:01 PM   #4
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Quote:
Originally Posted by chase View Post
wouldnt do it, they are already so thin to begin with
That is the arguement I'm most side with...

I've heard milling them down thousands of an inch and whatnot, but what would that really accomplish if you had a moderate bend???

Going to my first trackday and want to make sure everything is running solid...
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Old 08-25-2009, 08:22 PM   #5
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Quote:
Originally Posted by TXZixxer View Post
That is the arguement I'm most side with...

I've heard milling them down thousands of an inch and whatnot, but what would that really accomplish if you had a moderate bend???

Going to my first trackday and want to make sure everything is running solid...
do you fully understand how big a thousandth of an inch is? If you brought me your motorcycle rotor and asked me to turn it down .001 i would ****ing laugh at you like this ---> *gasp*
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Old 08-25-2009, 08:45 PM   #6
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It was exageration from some other boards. Never did I say that was my plan.

To answer your question, yes I do. my OP was about cutting down rotors.
Not a math lesson....thanks. FAIL on your threadwhore attempt.
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Old 08-25-2009, 08:49 PM   #7
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Quote:
Originally Posted by TXZixxer View Post
It was exageration from some other boards. Never did I say that was my plan.

To answer your question, yes I do. my OP was about cutting down rotors.
Not a math lesson....thanks. FAIL on your threadwhore attempt.
Thread whoring is when someone completely changes the subject. I was talking about turning down motorcycle rotors which is what the OP is talking about. now you fail. thank you come again
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Old 08-25-2009, 08:59 PM   #8
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Anymore comments from the peanut gallery?????

http://www.kawasakimotorcycle.org/fo...r-turning.html

http://www.cruizerforum.com/viewtopic.php?f=60&t=222

Rotors

--------------------------------------------------------------------------------

I tried to surface grind the rotors on my 1150GS. We tried a "dust off" less than .001 with coolant.



http://www.bayarearidersforum.com/fo...hp/t-5445.html

Max Smiley07-16-2002, 02:26 PM
hmm you are probably right, looks like a use then toss item:

zx6r specs:

front standard 4.85 ~ 5.15mm
svc limit: 4.5mm

rear standard: 4.85 ~ 5.15mm
svc. limit: 4.5mm

runout: 0.15mm or less
svc. limit: 0.3mm
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Old 08-25-2009, 09:03 PM   #9
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Quote:
Originally Posted by Falkryte View Post
Thread whoring is when someone completely changes the subject. I was talking about turning down motorcycle rotors which is what the OP is talking about. now you fail. thank you come again
How did you NOT change the subject?

I asked a question, you gave me no answer, and then proceded to tell a story that was manufactured in your head...
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Old 08-25-2009, 09:04 PM   #10
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being a wont get you help, plus i dont know a shop that would mess with it, i'd say hit up romeo or some other salvage yard and find some in better shape.
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Old 08-25-2009, 09:10 PM   #11
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Quote:
Originally Posted by PowerSurgeD View Post
being a wont get you help, plus i dont know a shop that would mess with it, i'd say hit up romeo or some other salvage yard and find some in better shape.
You're right it won't.
It'd be different if this was in a general or offtopic section. But this is Q/A and I just wanted answers, not hypothetical situations.

Thank you for advice though for the people that did offer solutions!

EDIT: Powersurge- what is Romeo's full SN? I can't seem to find him in a thread.
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Old 08-25-2009, 09:16 PM   #12
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sorry i couldnt help you better then that, here is his screen name
http://www.motohouston.com/forums/member.php?u=2763

and i've just never heard of anyone turning rotors on a motorcycles..sorry
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Old 08-25-2009, 09:20 PM   #13
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Quote:
Originally Posted by PowerSurgeD View Post
sorry i couldnt help you better then that, here is his screen name
http://www.motohouston.com/forums/member.php?u=2763

and i've just never heard of anyone turning rotors on a motorcycles..sorry
Neither had I, but it has obviously been talked about, done, tried. Just never saw how in the long run it'd be a good idea....

Thanks for the referral, I'll give him a shout!
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Old 08-25-2009, 09:24 PM   #14
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Quote:
Originally Posted by Falkryte View Post
do you fully understand how big a thousandth of an inch is? If you brought me your motorcycle rotor and asked me to turn it down .001 i would ****ing laugh at you like this ---> *gasp*

I think you are in better shape than that you could probably laugh a lot more before stopping to take a breath...

maybe like:

:r ofl: , then a few :laugh ing3:, some more :r ofl: ,
before your first breath.
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Old 08-25-2009, 09:30 PM   #15
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Wooooowwwww. Mods, lock this up, I got my info.

Everyone that doesn't know how to answer a question...
Refer here:
http://www.motohouston.com/forums/sh...d.php?t=107238
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Old 08-25-2009, 09:40 PM   #16
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so can you get rotors turned or what?
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Old 08-25-2009, 09:47 PM   #17
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Quote:
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so can you get rotors turned or what?
Not many, if any motorcycle shops will do it because of liability, some machine shops will do it as long as it's within the "serviceable width",
however it's not recommended.

It IS possible to have a machine shop flatten them on a press if the bends are not too bad. You can also surface grind them if they are not too bad, and they remain flat of course afterwards.

Looks like I will be going with better condition used ones, or biting the bullet on some aftermarket ones.
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Old 08-25-2009, 09:49 PM   #18
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Quote:
Originally Posted by TXZixxer View Post
Not many, if any motorcycle shops will do it because of liability, some machine shops will do it as long as it's within the "serviceable width",
however it's not recommended.

It IS possible to have a machine shop flatten them on a press if the bends are not too bad. You can also surface grind them if they are not too bad, and they remain flat of course afterwards.

Looks like I will be going with better condition used ones, or biting the bullet on some aftermarket ones.
well i know whenever i change my pads, i get some sand paper and sand the new pads down a little along with the rotor..i've worn rear rotors down to where that have cracks all around the holes
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Old 08-25-2009, 10:31 PM   #19
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Quote:
Originally Posted by PowerSurgeD View Post
so can you get rotors turned or what?
**** no, I would never turn down motorcycle rotors. . . think about how much asphalt youll eat when that disc tears and wedges in your forks.

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