Chinese Brake rotors


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gre_lauren
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Chinese Brake rotors

Post by gre_lauren » Tue Mar 31, 2015 11:04 pm



I was wondering if anyone has had any experience with these rotors from china?
The price is inexpensive and the material is thick enough but I have never heard of this company.
One thing I know, as our bikes get older parts will be harder to find. From my research, engine rebuilding is about impossible due to lack of bearings and other replacement parts.

Here is the link:
http://www.ebay.com/itm/2x-Front-Brake- ... 1794907834

George



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WingAdmin
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Re: Chinese Brake rotors

Post by WingAdmin » Wed Apr 01, 2015 1:09 pm

Well...being that they are selling two of them for $180, whereas the OEM discs were $300+ apiece, plus that these are from China, a country not known for quality steel...I'd say you'd probably get what you paid for.

That said, you might get lucky and they could be of good quality and work really well.

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HawkeyeGL1200
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Re: Chinese Brake rotors

Post by HawkeyeGL1200 » Thu Apr 02, 2015 7:30 am

I do not have any experience with brake rotors made in China (that I am aware of). I added that caveat because I *may* have installed rotors on something over the years that were sourced from China and didn't know it.

I don't have anything against Chinese products in general, but without a point of reference, I'd be more inclined to see if I could get a good used set of rotors for the bike if I needed to change mine.

It wasn't all that long ago that Japanese products were viewed with disdain by most everyone I know (including me). Japanese workmanship has come a long way since WWII. An American (W. Edwards Deming) Engineer is credited by many for the dramatic turn around in quality of manufactured products in Japan following the war. Following suit, South Korea, has also become a success story in the manufacture of automobiles, and I see no reason why the Chinese can't (or perhaps haven't) improved the quality of the products they make and sell on the world market.

Having written that, I'd still probably opt for a "good used" set of rotors made by Honda for my Honda motorcycle before I'd try a Chinese replacement part, if I could find them. There's a motorcycle salvage yard in Richmond, Va. that more than likely has the rotors you need, and I'm sure there are plenty of other places that can provide them as well. It wouldn't surprise me to discover someone who frequents this site has a set tucked away for a rainy day that they're no longer in need of...
I am wrong as often as I am right concerning what is wrong with someone else' motorcycle without having seen the machine in person. Guessing with limited information, as to the source of the trouble, is sketchy at best.

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MikeB
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Re: Chinese Brake rotors

Post by MikeB » Thu Apr 02, 2015 9:51 am

If it were me and I was looking for an economy set of rotors, I'd opt for EBC rotors and pads. I've used EBC in the past with satisfactory results.
I've used Chinese chain and bearings in the past as well and had very poor experiences. I'd shy away from most of their steel products. Brakes are too critical.

Here is an Ebay link:
http://www.ebay.com/itm/99-00-Honda-CBR ... 6026&rt=nc

They are item number 111021835027.
MikeB
Tacoma, WA, USA

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gre_lauren
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Re: Chinese Brake rotors

Post by gre_lauren » Wed Jul 12, 2017 2:56 pm

Well I did do it. I went online and bought a pair of the Chinese built rotors.
I was going to do a full brake service and start with new rotors and new pads. Since nobody here has had any experience with these rotors, I am posting my results.

Background:
Rotors are a solid one-piece construction that are die cut from 420 stainless steel (2Cr13) and pressed into the final shape. The rotors are then machined to 5mm and heat treated to a hardness of HRC 36. FYI the EBC rotors use the same material for their brake discs.
I opted to use the factory brake pads as I have used aftermarket in the past and I wanted to see how well the factory stuff does.
I scored a brand new EBC rear rotor off ebay from a wrecked bike. No wear at all anywhere but some surface rust from sitting. I sanded the rust off using 180 grit emery cloth by hand.

Impressions:
The Chinese rotors came wrapped in clear plastic inside individual boxes. They had been sprayed with a petroleum preservative that was easy to wipe off. Being a one-piece construction, they have a nice ring to them when rapped with the knuckles. The material IS magnetic when checked with a magnet; more so than the Honda discs. The machining and finish is very nice - no holes or machined slots in the rotor surface. The EBC rotor is fastened to its center carrier with floating buttons and is swiss cheesed with holes in a 3-2-3 pattern. The factory pads are a brass colored sintered metal with relief slots machined across the face for gas removal. The backing has an asbestos like material for heat control sandwiched between the pad back and a stainless steel sheet with two buttons for the piston cups to fit into.

Installation:
Straightforward with a caveat. You DO need to use the factory spacers between the rotors and the wheel hub to obtain the proper clearance between the rotor and caliper carrier. Otherwise the rotors are an exact fit in place for the factory rotors. If you omit the spacers, the rotors will rub against the caliper carrier slots when the wheel axle is tightened. This will not be an issue if you have the carriers for the 10mm rotors. My spacers came off easily and I reused them both. They are made of a paper like material almost like a gasket and measure 0.025" (0.065 mm) thick. The rear rotor has no such issues.

Performance:
Break in was trouble free for the rotors and pads. You DO have greatly reduced braking due to the surfaces not being in full contact until the pads and rotors wear into each other. After that the factory pads have a good initial bite and continue to bite hard even on a downhill grade. I have torture tested the front rotors. I used the front brake only to stop my 760lb machine from 60mph to 0. The rotor got HOT but did not warp. The factory pad continued to provide braking even after that stop as i used the front brake exclusively while running errands in and around town. After 350 miles the rotor is a nice dark blue color and very smooth only in the pad wear area. You can still see the faint lines of the machine marks in the swept area. Still has not warped and still stops hard. I suppose you could get the rotor hot enough to warp but that is true of any rotor. I am not willing to find out how hot is too hot. The wife and I have been 2-up on a trip and I have had zero problems with braking. I have done a panic stop (unplanned) with us aboard and stopped in plenty of time (using all my brakes of course). The only thing that i have noticed is the front brake will 'sing' as you roll to a stop. Not at speed when you brake but as you roll that last few feet to a stop. It is not an annoying noise. It does remind me of semi truck brakes as they stop but on a vastly reduced scale. Possible cause could be the pad vibrating against the caliper or that the rotor is a single piece and is acting as a sound board for the brake. If that is the case for the latter then I can see why Honda chose a 2 piece riveted design for the rotors. The EBC rotor in the rear has a light blue color and stops just as hard. My concern is with the holes. they are not chamfered and I believe that they may accelerate rear pad wear acting as a grater against the pads. Time will tell.

Conclusion:
I went out on a limb (sort of) when I purchased these rotors. I can say with certainty that for all the uses I have put these rotors through they have not failed me once. They have not warped or cracked and still provide lots of braking action with the stock pads. They obviously are not racing material but even when I was hitting corners pretty hard 1-up they performed very well. As of this writing I am very pleased with these rotors and would recommend them to somebody who is looking for an inexpensive alternative to new front rotors.

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Re: Chinese Brake rotors

Post by MikeB » Wed Jul 12, 2017 3:14 pm

What bike did you mount them on?
MikeB
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Corkster52
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Re: Chinese Brake rotors

Post by Corkster52 » Wed Jul 12, 2017 3:21 pm

Good review George! Since it's been over 2 years since your first post and final results, I'd say you put them to a good test. I would have thought that same as others about the quality of the Chinese stuff, but I too am guilty of taking a while to overcome my opinion of Japanese products from long ago (before they bought the patent rights to the transistor). It's good to know that their products are a viable option as we all try to save what we can.

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gre_lauren
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Re: Chinese Brake rotors

Post by gre_lauren » Wed Jul 12, 2017 3:27 pm

MikeB wrote:
Wed Jul 12, 2017 3:14 pm
What bike did you mount them on?
My 1987 Gl1200 Interstate.

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gre_lauren
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Re: Chinese Brake rotors

Post by gre_lauren » Wed Jul 12, 2017 3:35 pm

Corkster52 wrote:
Wed Jul 12, 2017 3:21 pm
Good review George! Since it's been over 2 years since your first post and final results, I'd say you put them to a good test. I would have thought that same as others about the quality of the Chinese stuff, but I too am guilty of taking a while to overcome my opinion of Japanese products from long ago (before they bought the patent rights to the transistor). It's good to know that their products are a viable option as we all try to save what we can.
I had started doing my research 2 years ago when it became apparent that there was only 2 options to go concerning replacing brakes: getting a used rotor with unknown life remaining or an expensive EBC rotor with holes and whatot drilled into it. I actually did the brake job 2 months earlier after collecting all the parts needed to rebuild the calipers and replace the rotors. The left front rotor had worn to 3.8mm when I removed it and the rear rotor was way below 7mm. I am glad I did the job!

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Re: Chinese Brake rotors

Post by MikeB » Wed Jul 12, 2017 3:43 pm

It's great that you found some suitable substitutes. Hopefully you will continue to have great success.

By the way, excellent research and a great write up.


MikeB
Tacoma, WA, USA

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