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      05-17-2012, 10:04 AM   #23
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We turned the calipers yellow on our car during testing, and the rotors still performed flawlessly, no cracking spidering etc. I'm having our R&D guys put together a little more info for yall, I'll have it soon.
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      05-17-2012, 02:05 PM   #24
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can we buy replacement rings when needed or we need to buy the whole thing all over?
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      05-17-2012, 02:10 PM   #25
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It would be interesting to see them from other angles. Would be even better next to stock
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      05-17-2012, 02:21 PM   #26
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Quote:
Originally Posted by pixelblue View Post
can we buy replacement rings when needed or we need to buy the whole thing all over?
Currently re ring kits are not available.

Quote:
Originally Posted by RimasRS View Post
It would be interesting to see them from other angles. Would be even better next to stock
I don't have any side by sides but I'll try to at least give you a little bit of a comparison using some shots we have on the site


ECS 2-Piece______________________________BMW Performance__________________________________Stock

As for other angles

Front


Rear


Side
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      05-17-2012, 02:53 PM   #27
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More details on vane design would be awesome. This seems to be only thing seperating the ECS rotors from the Racing Brakes ones. If the vanes design is similar, then this is a steal!
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      05-17-2012, 03:23 PM   #28
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2 you buy 2 piece rotors that are 30% more expensive than BMW perf (from our forum vendors) and you cant rering them?
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      05-18-2012, 08:22 AM   #29
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I'll be all over these!
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      05-18-2012, 08:49 AM   #30
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Quote:
Originally Posted by BrokenVert View Post
2 you buy 2 piece rotors that are 30% more expensive than BMW perf (from our forum vendors) and you cant rering them?
+1, the whole point of this was to be able to re-ring, until then I'll keep using EBC.
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      05-24-2012, 11:02 AM   #31
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Quote:
Originally Posted by BiscottiGelato View Post
More details on vane design would be awesome. This seems to be only thing seperating the ECS rotors from the Racing Brakes ones. If the vanes design is similar, then this is a steal!
I had one of my R&D guys give me a little info on the vein design to share with yall, here is some of what he sent over to me.

Rotors utilize a directional curved vain designed to pump air through the rotor and optimize air flow to maximize cooling.
The heat convection (due to air flow) is considered the most important mode of heat dissipation in rotor design. The key to this is adequate air flow through the rotor. Straight vaned rotors do not pump air through the rotor and as such have inferior cooling capacity in comparison.
The air velocity in curved vane rotors is higher than pillar-post rotors, and as such curved vain rotors have been shown to cool more effectively than pillar/post designs.


Let me know if there are any specifics you'd like and I'll try to get them for you.
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      05-24-2012, 11:39 AM   #32
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Quote:
Originally Posted by BiscottiGelato View Post
More details on vane design would be awesome. This seems to be only thing seperating the ECS rotors from the Racing Brakes ones. If the vanes design is similar, then this is a steal!
The RB rotors are 2mm thicker. They also have more braking surface area due to the fact they aren't cross drilled all over, just in the slotted areas. I'd like to see a 2 piece rotor such as this for our cars with only slots or jhooks. I don't want drilled from my track application as they will crack there. All crossed drill rotors will crack from heat cycles.
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      05-24-2012, 11:43 AM   #33
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Quote:
Originally Posted by Focusedintntions View Post
The RB rotors are 2mm thicker. They also have more braking surface area due to the fact they aren't cross drilled all over, just in the slotted areas. I'd like to see a 2 piece rotor such as this for our cars with only slots or jhooks. I don't want drilled from my track application as they will crack there. All crossed drill rotors will crack from heat cycles.
On our test mule the ECS 2 Piece rotors saw hundreds, if not thousands, of high speed stops ranging from 60 to 0, to 100+ to 0, back to back to back, pushing them as hard as possible. They have yet to show any signs of cracking.
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      05-24-2012, 11:58 AM   #34
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What grade is the steel used? are the holes cast or drilled in?
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      05-24-2012, 12:42 PM   #35
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Quote:
Originally Posted by Focusedintntions View Post
The RB rotors are 2mm thicker. They also have more braking surface area due to the fact they aren't cross drilled all over, just in the slotted areas. I'd like to see a 2 piece rotor such as this for our cars with only slots or jhooks. I don't want drilled from my track application as they will crack there. All crossed drill rotors will crack from heat cycles.
Yeah, for sure the RB rotors are better cuz they are not cross-drilled, will have to see how big of a difference there are in terms of cracking between the two. That said, the RB rotors cracked anyways...

The 2mm RB chose to increase in thickness can however make some pad/shim combo to not work. So it's a trade-off there.

Given the cheaper price, I can probably take the cross drill and the thinner thickness. As long as the vane design is as efficient as the ones on the RB for maximum cooling for the size.
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      05-24-2012, 01:21 PM   #36
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if they offered replacement rotors there would be more interest! hint, hint...
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      05-24-2012, 02:21 PM   #37
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Quote:
Originally Posted by Focusedintntions View Post
What grade is the steel used? are the holes cast or drilled in?
I'll report back on this as soon as I get a confirmed answer

Quote:
Originally Posted by pixelblue View Post
if they offered replacement rotors there would be more interest! hint, hint...
The more people I hear this from the more request I get to send in



:edit:
Our R&D guys got back to me really quickly with some info on the rotor rings, and here it is

Rotor Rings:
Made from a cast iron with a carbon content max of 3.3%.
The cast iron grade is FC-30
The cross drill/slot pattern is machined in, not cast
The rotors are heat treated for stress relief
The cast iron actually gets stronger between 500-600F and displays stable mechanical properties up to and over 1000°F
Hardness and strength aren’t compromised due to heat which contributes to great wear resistance, particularly at elevated temperatures.
Excellent thermal conductivity and heat absorption properties. High heat capacity (heat absorption) combined with high thermal conductivity make it a great material to absorb and dissipate heat more quickly
The good vibration damping properties contributes to quiet braking and no rotor induced squeaking
Coated for corrosion resistance
Friction surfaces blanchard ground to ensure perfectly parallel and proper pad bed-in.
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Last edited by ECSTuning; 05-24-2012 at 02:47 PM.
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      05-24-2012, 02:58 PM   #38
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Quote:
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The more people I hear this from the more request I get to send in
there's been interest expressed already plus it's a no brainer my friend. there would be more incentive to buy your product at your asking price knowing replacing rotors are available
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      05-24-2012, 03:33 PM   #39
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Quote:
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there's been interest expressed already plus it's a no brainer my friend. there would be more incentive to buy your product at your asking price knowing replacing rotors are available
And to add a bit to that, why sell a 2 piece rotor without the availability to purchase replacement rings off the bat?

You guys make great products, but someone should have thought of that.
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      05-24-2012, 08:30 PM   #40
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Quote:
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The cross drill/slot pattern is machined in, not cast
......
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      05-24-2012, 10:39 PM   #41
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Quote:
Originally Posted by pixelblue
if they offered replacement rotors there would be more interest! hint, hint...
This and matching rear fitments
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      05-25-2012, 03:31 PM   #42
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I've got good news. When you're ready for a re-ring ECS will offer discounts on pairs of replacement rotors to the original customer or customers showing proof of ownership. Please contact me or our sales staff for more info.

Rears I'm still pushing for but as stated for the time being I'm directing guys to our ECS GEOMET rotors.
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      07-10-2012, 01:23 PM   #43
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Anyone running these yet?? just ordered rear performance rotors and fronts will be next but I'm not sure if I wanna go with the performance or ecs rotors, would like to see some feedback/opinions on these first...
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      07-10-2012, 07:19 PM   #44
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Ive been running these for about 2 weeks now and I am really pleased with the results. I was having horrible squealing from the performance rotors even with new pads and removing the sensors. These rotors paired up with a new set of cool carbons has solved the problem so far. ECS customer service was great, and they look 100x better than the performance rotors as well.
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