Drilled rotors=warped rotors?


Information and questions on GL1100 Goldwings (1980-1983)
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tunaboy
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Drilled rotors=warped rotors?

Postby tunaboy » Fri Mar 01, 2013 11:00 pm



I read somewhere that guys were having problems with warped rotors after drilling. Anybody have issues after drilling their disks?
Thx.



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veg_eta_ble
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Re: Drilled rotors=warped rotors?

Postby veg_eta_ble » Sat Mar 02, 2013 9:17 pm

Just curious as what you are hoping to gain by drilling the rotors? :?:
If you walked out of bed today, had a job to go to, a home to go back to, and someone there who loves you, then my friends, you have already won. -Larry Miller

tunaboy
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Re: Drilled rotors=warped rotors?

Postby tunaboy » Sun Mar 03, 2013 6:03 am

Better braking in the rain. I also plan to upgrade to stainless lines.

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patbrandon1
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1981 Honda CM400C

Re: Drilled rotors=warped rotors?

Postby patbrandon1 » Sun Mar 03, 2013 6:29 am

tunaboy wrote:Better braking in the rain. I also plan to upgrade to stainless lines.


DO NOT DRILL THEM!!! That wasn't how they were designed, and will lose integrity instantly. And brakes are nothing to mess with, it could mean your life. I, on occasion ride in the rain, and I simply adjust my riding to the weather. The stainless lines are a great idea, but if you drill the rotors, you will damage them. I just think that you are going to have a very difficult time with this, in regards to getting the holes exactly right, not destroying any sort of heat treatment that has been applied, and somehow damaging the structure of the rotor causing it to ultimately crack/shatter. I know people have been doing this since the 50's, but there are better solutions. Every person I know that has done the drill thang, has had to replace their rotors, they will crack or shatter eventually, and you don't get to decide when that happens. Just slow down sooner in the rain, and use a little more back brake.

Maybe look at this http://www.visordown.com/advanced-ridin ... 600-3.html

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SteveB123
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Re: Drilled rotors=warped rotors?

Postby SteveB123 » Sun Mar 03, 2013 7:41 am

http://www.wingovations.com/#/brake-disc-drilling/4548455146

Where have you seen stainless steel, non-vented motorcycle rotors cracking from drilling?
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

Re: Drilled rotors=warped rotors?

Postby tunaboy » Sun Mar 03, 2013 6:37 pm

I know that I could get the holes in right and the rotors will not shatter. When you machine a ferrous metal you introduce stress. My concern is that I might introduce enough stress to cause warping which would make the brakes pulsate. Maybe I will start with the stainless lines and take it from there.




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