Racing Brake Rotors

Oct 7, 2013 | 04:52 PM

cnterline

Thread Starter

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From: Long Island New York

2003 SL55,2020 GTC ,2017 GTS sold ,2002 G500 Sold,2003 SL500 Sold,

Racing Brake Rotors

Anybody use their light weight rotors on the street ?

Oct 7, 2013 | 07:55 PM

320 dreamer

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From: murfreesboro,tn

2003 porsche 996 turbo

i had them on my 32 and they were awesome. remember you cant use ceramic pads with them a hawk hps pad is preferred. brinell hardness is a 277

Oct 8, 2013 | 01:20 PM

AgSilver

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From: Florida-Germany-New York

2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI

Quote:

Originally Posted by 320 dreamer

i had them on my 32 and they were awesome. remember you cant use ceramic pads with them a hawk hps pad is preferred. brinell hardness is a 277

Improves handling, braking. Also by reducing rotational mass, about the equivalent of a 40HP increase.

It has been more than 5000 miles since new with EBC Reds and no problems with many hard applications above 110 MPH.

Oct 8, 2013 | 02:54 PM

sunil517

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Joined: Nov 2010

Posts: 746

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From: Queens,NYC

2014 E63s 1993 mazda rx7 on Boost

40HP

40...
where did you get that number...
if that was try we should all do rotors.....

Oct 8, 2013 | 03:18 PM

kompressede

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From: NY

Sold - 05' E55

^ Thats like 10hp per rotor? ?

Oct 8, 2013 | 03:42 PM

Toadster

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From: Folsom, CA

2005 E55 AMG

$1300 just for the fronts - yikes, you can pull the spare tire and cut-out your resonator to save more weight

Oct 8, 2013 | 03:49 PM

Extreme Dimensions

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From: Fullerton, CA

Too Many To List

Quote:

Originally Posted by AgSilver

That's a big HP number to toss around, especially for for a non power mod... While rotational mass does make a big impact, I'd like to see a source for this number...

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Oct 8, 2013 | 04:54 PM

Toadster

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From: Folsom, CA

2005 E55 AMG

Quote:

Originally Posted by AeroFunction

That's non rotational mass. also, its not just about weight. Stopping power FTW lol.

PS. Great sig pic

yes, I totally agree, unsprung weight is a big difference on the corners - how do those rotors stop better than the stock ones? they're just lighter - correct?

and yes, I like my sig pic too

Oct 8, 2013 | 06:02 PM

#10

Extreme Dimensions

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From: Fullerton, CA

Too Many To List

Quote:

Originally Posted by Toadster

yes, I totally agree, unsprung weight is a big difference on the corners - how do those rotors stop better than the stock ones? they're just lighter - correct?

and yes, I like my sig pic too

Yes, they are lighter, as well as being made of a harder iron than the OEM, different vane design if i recall, etc.. if you go into their site it gets a bit more in depth in regards to their advantages

Oct 9, 2013 | 05:05 AM

#11

AgSilver

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Joined: Dec 2006

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From: Florida-Germany-New York

2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI

Quote:

Originally Posted by Toadster

yes, I totally agree, unsprung weight is a big difference on the corners - how do those rotors stop better than the stock ones? they're just lighter - correct?

and yes, I like my sig pic too

Rotational mass, also known as kinetic energy. It takes less energy to spin up and therefore less energy to dissipate under braking.

Oct 9, 2013 | 05:31 AM

#12

AgSilver

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Joined: Dec 2006

Posts: 1,124

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From: Florida-Germany-New York

2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI

Quote:

Originally Posted by sunil517

40...
where did you get that number...
if that was try we should all do rotors.....

It is a calculation which can be applied to any rotational mass. For example; look at the equivalent HP gains that are achieved by the replacement of engine crank pulleys with lightweight units as offered by various tuners. Usually in the range of a 10HP equivalence. Now consider the effect of a reduction of 40 LBS of rotational mass. This is partly why most exotics such as Ferrari, MB SLS, Porsche, to name just a few, all offer carbon rotors which save another 40 LBS or about 80 LBS. The MB SLS even utilizes a carbon fiber drive shaft (as do I) to reduce rotational mass. Years ago an acquaintance of mine said "add horsepower and go faster on the straightaways . . . add lightness and go faster everywhere". His name was Colin Chapman.

Oct 9, 2013 | 02:57 PM

#13

RacingBrake

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CLS550

Learn more about the advantage on light weight rotors from "ML63"'s latest evaluation on his ML63 wit RacingBrake's two piece rotors (front and rear) installed.

https://mbworld.org/forums/5797439-post70.html

Under the thread title: World's First: RacingBrake 2-Piece Brake Rotors ...