Throw away rotors? - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 6 (permalink) Old 07-23-2010, 08:12 PM Thread Starter
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Throw away rotors?

Hi all...bit silly asking but with todays process one never knows.

Can m/c rotors be turned? Do they have some other process to remove the small groves? Do you simply throw them out?

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post #2 of 6 (permalink) Old 07-23-2010, 11:17 PM
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I don't know but my rear is getting some grooves started in it.I noticed some coloring to the part that does't have pad on it like its getting hot quess I should @ least get some new pads.This is with just under 17,000 miles on bike.I'm sure the darkside tire is adding to the heat with all the extra traction

06 Vulcan 900 classic-Totaled

Vance & Hines staggered, PC3, K&N in stock opened up box, Darkside

Over & out
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post #3 of 6 (permalink) Old 07-24-2010, 07:17 AM Thread Starter
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I have a thread on EBC Organic pads. I missed the opporutunity when the bike was new. That's the time to take the OEM pads off and replace with these organics. No rotor wear, great braking, quiet.
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post #4 of 6 (permalink) Old 07-24-2010, 01:51 PM
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From what I have read, the rotors can be turned, but there is a minimum thickness tolerance. I think it is listed in the O&M manual. If not, PM me and I will check it out in the service manual that I have.

'07 VN900 Classic
Horsepower is an illusion.
Torque is the source of all good things.
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post #5 of 6 (permalink) Old 07-25-2010, 11:46 AM
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Not much leeway according to the 900 Custom Service Manual, throwaways.

Standard: F: 0.19 - 0.20 inch, R: 0.27 - 0.28 inch
Service Limit: F: 0.18 inch, R: 0.24 inch

2007 Custom
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post #6 of 6 (permalink) Old 07-25-2010, 02:04 PM
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Grooving is a normal part of brake rotor wear. On my cars, I have the rotors resurfaced every 3 sets of pads, but that's because there's a ridge standing on the outer rim of the rotor.

When my 900 needs pads, I'll put them in, go out on a country road, and make 3-4 hard stops to seat the new pads. Job done.

Calipers can get pretty hot, and the fluid doesn't circulate. The fluid in calipers can break down after thousands of heat/cool cycles. Be sure, when you collapse the calipers, to open the bleed vent and run the old fluid to waste, so that the caliper fills with new fluid as it wears. With the caliper fully collapsed, I open the bleed screw and pump a little new fluid through the caliper to rinse it.

2007 VN900LT, red/titanium
OEM highway bars and luggage rack
OEM WS lowers
4.5 inch pull back risers
Kuryakin highway pegs
Stebel air horn
Utopia driver backrest on OEM seat
OEM gel seat for about town, and hauling grandkids
ISO grips
Jardine light bar
K&N air filter
Brakeaway cruise control

Last edited by mbwarner; 07-25-2010 at 03:04 PM.
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