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Author Topic: Warped Rotor  (Read 858 times)

Offline Matt Chapter

  • Lives at Base of Mt. Olympus
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Warped Rotor
« on: September 28, 2011, 11:28:00 AM »
So, regarding warped rotors, what's the best solution?  I had been thinking just plunking down for a brand new oem piece would be the solution, but can the rotor be resurfaced or "turned"?  What would be the pros / cons? I know what caused the warpage, so hope to prevent it in the future. (wrong brake pads installed, bad master cylinder..)

Rotor in question is probably a stainless steel one, on my '86 R65.
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'04 R1150 RT ~41000 miles
'86 R65 / '84 motor ~72000 miles. SS lines, Spiegler rotor, Progressive monoshock, Keihan silencers, a piece of Pichler fairing.
'76 CB400F ~26000 miles. non-runner!

Offline Bob_Roller

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Re: Warped Rotor
« Reply #1 on: September 28, 2011, 11:49:37 AM »
The difference in thickness from a new rotor to one that is technically out of limits is not very much .

My guess is that to get the rotor 'true' you will have a rotor that is too thin to use .

I have EBC semi-floating steel rotors on my'81 R65 they work great, one member here has them and they wore out at the 'hardware' at the rotor to carrier area in I believe under 40,000 miles .

A company in the Springfield, Ohio area, Speigler Performance, will remove the rotor and rework the carrier and add a semi-floating  stainless rotor, which has the capability of being rebuilt, replace the 'hardware' and rotor in probably less than an hours work, if and or when they do need replacing .

OEM rotors are going for over $400US each, EBC around $250US, Speigler around $240US .

You may want to consider replacing the brake lines, if they are rubber and get different pads, there are much better compound pads than OEM out there now.
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'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

jgp1854

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Re: Warped Rotor
« Reply #2 on: September 28, 2011, 02:11:13 PM »
Is there disadvantage in replacing OEM brake pads with some of the higher tech pads using the OEM rotors?

jgp
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Offline Bob_Roller

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Re: Warped Rotor
« Reply #3 on: September 28, 2011, 02:34:08 PM »
No problems using aftermarket pads, just don't get all metal pads, they don't work well with stainless rotors .
Logged
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline Matt Chapter

  • Lives at Base of Mt. Olympus
  • ***
  • Posts: 576
  • <insert witty remark here>
Re: Warped Rotor
« Reply #4 on: September 29, 2011, 10:06:17 AM »
Quote
The difference in thickness from a new rotor to one that is technically out of limits is not very much .

My guess is that to get the rotor 'true' you will have a rotor that is too thin to use .

...

You may want to consider replacing the brake lines, if they are rubber and get different pads, there are much better compound pads than OEM out there now.

I'm already past all that stuff, I have SS lines and ebc pads.  The rotor is uber warped though.  I'll have to look into Speigler.  Now would be an opportune time to send off the rotor, since I'm still recovering from a recent pavement surfing episode and the bike needs a bit of maintenance before it can be ridden..
Logged
'04 R1150 RT ~41000 miles
'86 R65 / '84 motor ~72000 miles. SS lines, Spiegler rotor, Progressive monoshock, Keihan silencers, a piece of Pichler fairing.
'76 CB400F ~26000 miles. non-runner!
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