Is this too close to min thickness?

[chickenStripCharlie]

I'm so disappointed with ebay. I lost a few rotors I needed because I asked for thickness measurements, and they never reply since they know someone else will just buy them blind.

So I had to buy blind.

4.5mm min thickness, and I just measured at 5 diff spots and got anywhere between 4.49mm and 4.54mm

How much life can I expect out of them?

Also, the spring washers under 2 of the rivets are missing and those rivets are loose. Is there a way to remedy this? A new hardware kit? (I did a search on ebay and only found a "button bobbin" set for a Ducati) I'm not too familiar with floating rotors so I dont know

Thanks!!

 

[chickenStripCharlie]

Anyone? Bueller?

How "strict" is everyone on obeying the min thickness?

Seems the OEM rivets cannot really be replaced, but c-clip replacements are out there.

 

[teazer]

4.49 is close enough to 4.5 and compared to our old 7mm thick plates, that's pretty light. If you can get the correct length replacements, they should be OK. In terms of life expectancy (the rotor that is), how many miles do you expect to put on that bike each year? If it's a coffee bar and run around the block bike, they will last as long as you want the keep the bike.

If it's a daily driver and you intend to use it hard and often in traffic, I'd call EBC and get a brand new disk. Brakes are more important than most other parts of a bike, so if in doubt, go new.

 

[Out]

E bay is tough. Limited time and communication, both driving a sale of something you need. Wish I could help with the washer question but I am also not real familiar there. I assume it is to quell noise and vibration while allowing float. A small spot of bonding agent could stop a rattle and still allow it to float. If it was me I would give it a test run somewhere out of the way of traffic and feel and listen. But like teazer said, if it is a daily, high traffic, or hard use ride I would probably go new too. What bike is it on?

 

[Brent]

Doesn't Ebay have a return guarantee?

Assuming the steel is of decent quality then thin, out of true and poorly assembled covers all the quality failures they could have. Are you good with a maybe for your brakes.

 

[chickenStripCharlie]

Doesn't Ebay have a return guarantee?

Assuming the steel is of decent quality then thin, out of true and poorly assembled covers all the quality failures they could have. Are you good with a maybe for your brakes.

I'm waiting for seller to respond.
While this bike won't be a daily driver, the missing washers bother me more than the fact that rotors at at minimum thickness.

My research shows that the washers are likely missing due to someone trying to turn these semi-float rotors into full-float by splitting the washers and pulling them out. I guess it was too much work since they only got 3 done and gave up. The other rotor is fine.

So i would definitely not list this under "normal wear and tear". This isn't normal.

We'll see what he says ... i'm happy to accept a partial refund and re-do the buttons myself. I see they can be purchased on ebay new and installed on the rotors with C-clips

 

[Brent]

This is a used part?

 

[chickenStripCharlie]

This is a used part?

yeah. used OEM gsxr rotors.

He gave me a 50% refund. I'm happy with that.

 

[irk miller]

Lots to consider with brake rotor thickness. The metal dissipates heat, so if they're at or beyond minimum, then your pads will wear much more quickly. Add that to the possibility for the rotors to warp. Usually, warpage doesn't occur over time, it happens when someone on their cell phone pulls out of the Kroger parking lot and cuts you off, making you squeeze all the brakes you've got. The next time you pull the front brake lever, your front end will shimmy like an epileptic fit and your lever pulsates.