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Old 03-24-2009, 02:18 PM   #1
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professionally lightened rear rotor

seen this on a bike F/S........how does one lighten a rear rotor other then replace it w/ a "wave" rotor?
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Old 03-24-2009, 02:19 PM   #2
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it looks like it has been drilled. (Iwas wondering the same thing)
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Old 03-24-2009, 02:23 PM   #3
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Quote:
Originally Posted by RACER X View Post
seen this on a bike F/S........how does one lighten a rear rotor other then replace it w/ a "wave" rotor?
Larger/more holes, and turn it on a lathe.
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Old 03-24-2009, 02:28 PM   #4
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http://forums.13x.com/showthread.php...tor+lightening


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Old 03-24-2009, 02:45 PM   #5
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How I understood it, a CAD design can draw lines of best fit using the existing hole pattern on the rotor. Then a design is configured, and cut (water-jet would be best since it's hardened steel).

I've got one on my bike. Pic to come.

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Old 03-24-2009, 03:38 PM   #6
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thats pretty smooth.
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Old 03-24-2009, 03:41 PM   #7
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Quote:
Originally Posted by 07SLVRCBR View Post
How I understood it, a CAD design can draw lines of best fit using the existing hole pattern on the rotor. Then a design is configured, and cut (water-jet would be best since it's hardened steel).

I've got one on my bike. Pic to come.
braking is the same? What are the pro's/cons of this besides the asthetics?

I am thinking it is something I need to do....and since I don't race or anything, I could get away with doing the fronts too.

you guys think doing this encourages premature warping of a rotor?
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Old 03-24-2009, 03:51 PM   #8
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guy says it takes iff 1lb from the rotor

but being its rotational mass it's really like 7lbs
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Old 03-24-2009, 03:53 PM   #9
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I found some rotors on ebay for my bike that looks like this for 150 lol
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Old 03-24-2009, 03:54 PM   #10
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Quote:
Originally Posted by RACER X View Post
guy says it takes iff 1lb from the rotor

but being its rotational mass it's really like 7lbs
i read that on the thread, now translate for me....better braking power? I would think less since you are shaving the contact surface? and premature warping of rotors?
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Old 03-24-2009, 03:55 PM   #11
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Warping is caused from heat, which with this way, you should have less....in theory... Im no scientist tho.
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Old 03-24-2009, 04:00 PM   #12
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Quote:
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i read that on the thread, now translate for me....better braking power? I would think less since you are shaving the contact surface? and premature warping of rotors?
better cornering, less effort to get the bike leaned over. and yes theoretically better braking cuz of thw weight loss. having to slow down 1lb vs 7
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Old 03-24-2009, 04:02 PM   #13
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better cornering, less effort to get the bike leaned over. and yes theoretically better braking cuz of thw weight loss. having to slow down 1lb vs 7
eh, I can't say that there would be any justification for me spending the $$$ other than the cool factor. If I was that diehard, I'd quit eating McBangBang's and Chinese Buffets + the beer.
Still not sure how that help would help for better cornering, but whatever.
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Old 03-24-2009, 04:03 PM   #14
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same thing as lighter wheels..
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Old 03-24-2009, 04:06 PM   #15
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same thing as lighter wheels..
gotcha, probably wouldn't make a difference at my skill level...minus the cool factor like I said. One would think the factory would make them this way from the get go if they really do enhance the ride and the appearance.
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Old 03-24-2009, 04:18 PM   #16
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does anyone know any place in town that can do this?
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Old 03-24-2009, 04:22 PM   #17
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seem like alot of work/monet for a few pounds of shedding weight.

how about not eating that cheese burger and fries before you ride? That is sure to lighten things up. Maybe take a ?
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Old 03-24-2009, 04:24 PM   #18
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1lb of rotaional mass is diff then 7 lbs of static mass.
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Old 03-24-2009, 04:28 PM   #19
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Old 03-24-2009, 04:30 PM   #20
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boy......don't even joke about such things. There's ALWAYS a bigger engine! <luuuuv muh beer!>
sorry, I went to an extreme....I won't be giving up beer anytime soon.
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