What part of the BBK saves weight?
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What part of a BBK saves weight vs OEM? I'm guessing it's the calipers since the rotors are larger, unless BBK rotors are made from a lighter weight material
?
I ordered factory replacement slotted rotors from Rotora (not BBK) and they weighed about the same as the OEM rotors. I'm still using OEM calipers for now. I'll do a write-up on the Rotora's after they have broken-in and I can start punishing them
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I ordered factory replacement slotted rotors from Rotora (not BBK) and they weighed about the same as the OEM rotors. I'm still using OEM calipers for now. I'll do a write-up on the Rotora's after they have broken-in and I can start punishing them
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weight savings is in 2 forms with a true bbk rotaional weight savings and unsprung weight
my 6pot rotoras calipers weigh in around 9lbs loaded compared to arounfd 14-16lbs of stock the 2 piece 14 1/4 in rotor weigh about 3lbs lighter in rotaional weight
stopping power is out of this world
my 6pot rotoras calipers weigh in around 9lbs loaded compared to arounfd 14-16lbs of stock the 2 piece 14 1/4 in rotor weigh about 3lbs lighter in rotaional weight
stopping power is out of this world
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https://www.clublexus.com/forums/suspension-and-brakes/60803-some-good-info-on-brakes-upgrade-spec.html
stock gs brakes
font caliper - 2 pistons, 15lb
front rotor - 11.5" diameter, 18lb
rear rotor - 12" diameter, 12lb
supra tt upgrade (around a bit over $1000)
caliper - 4 pistons, 15lb
rotor - 12.7" diameter, 20lb
brembo GT upgrade (around $2800 to $3000)
caliper - 4 pistons, 7lb
rotor - 13.1"
piston area - 1.5"x2, 1.73"x2
pad area - 9.6"^2
rotor thickness - 1.26"
ap racing upgrade (around $3200 retail, there is a GB now for $2599
)
caliper - 6 pistons, 6lb
rotor - 13.5"
piston area - 1.1"x2, 1.6"x2, 1.5"x2
pad area - 11.8"^2
rotor thickness - 1.4"
stoptech upgrade (around $1800 to $2000)
caliper - 4 pistons (will fit in stock 17" wheel)
rotor - 13.1"
stock gs brakes
font caliper - 2 pistons, 15lb
front rotor - 11.5" diameter, 18lb
rear rotor - 12" diameter, 12lb
supra tt upgrade (around a bit over $1000)
caliper - 4 pistons, 15lb
rotor - 12.7" diameter, 20lb
brembo GT upgrade (around $2800 to $3000)
caliper - 4 pistons, 7lb
rotor - 13.1"
piston area - 1.5"x2, 1.73"x2
pad area - 9.6"^2
rotor thickness - 1.26"
ap racing upgrade (around $3200 retail, there is a GB now for $2599
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
caliper - 6 pistons, 6lb
rotor - 13.5"
piston area - 1.1"x2, 1.6"x2, 1.5"x2
pad area - 11.8"^2
rotor thickness - 1.4"
stoptech upgrade (around $1800 to $2000)
caliper - 4 pistons (will fit in stock 17" wheel)
rotor - 13.1"
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Chowster (08-08-17)
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lexforlife: How did you measure rotational weight? Do you mean the rotors were 3 pounds lighter on a scale?
Neo: Didn't know that about the rotors, thanks.
DaveGS4: Great link, I'll contribute the weights of the Rotora factory replacment rotors to that thread.
Neo: Didn't know that about the rotors, thanks.
DaveGS4: Great link, I'll contribute the weights of the Rotora factory replacment rotors to that thread.
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Originally Posted by DaveGS4
https://www.clublexus.com/forums/showthread.php?t=60803
ap racing upgrade (around $3200 retail, there is a GB now for $2599
)
ap racing upgrade (around $3200 retail, there is a GB now for $2599
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
![Wink](https://www.clublexus.com/forums/images/smilies/wink.gif)
#7
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Originally Posted by RacerLex
lexforlife: How did you measure rotational weight? Do you mean the rotors were 3 pounds lighter on a scale?
Neo: Didn't know that about the rotors, thanks.
DaveGS4: Great link, I'll contribute the weights of the Rotora factory replacment rotors to that thread.
Neo: Didn't know that about the rotors, thanks.
DaveGS4: Great link, I'll contribute the weights of the Rotora factory replacment rotors to that thread.
actual weight is about 3lbs lighter , they are 2 piece with hats being alum and rotor disk being steel rotational mass is amplified so three pounds of rotationl diff is like a added 30 lbs of weight spinning vs just unsprung weight
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about the rotational weight i was actually thinking. yes the center part is lighter now coz' it's the aluminum hat. but the outter is still cast and very heavy, and it's more on the outward now so the spinning weight is more outward, creating larger force. is that a good thing or they balance out?
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#9
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Originally Posted by rominl
about the rotational weight i was actually thinking. yes the center part is lighter now coz' it's the aluminum hat. but the outter is still cast and very heavy, and it's more on the outward now so the spinning weight is more outward, creating larger force. is that a good thing or they balance out? ![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
rotational mass is weighed as complete . so hat and disk together weighed
#10
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Originally Posted by lexforlife
rotational mass is weighed as complete . so hat and disk together weighed
that's exactly why bbk has larger rotors, so calipers are more towards the outside, so they can exercise larger torque force to stop the car?
#11
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Originally Posted by DaveGS4
https://www.clublexus.com/forums/showthread.php?t=60803
stock gs brakes
font caliper - 2 pistons, 15lb
front rotor - 11.5" diameter, 18lb
rear rotor - 12" diameter, 12lb
supra tt upgrade (around a bit over $1000)
caliper - 4 pistons, 15lb
rotor - 12.7" diameter, 20lb
brembo GT upgrade (around $2800 to $3000)
caliper - 4 pistons, 7lb
rotor - 13.1"
piston area - 1.5"x2, 1.73"x2
pad area - 9.6"^2
rotor thickness - 1.26"
ap racing upgrade (around $3200 retail, there is a GB now for $2599
)
caliper - 6 pistons, 6lb
rotor - 13.5"
piston area - 1.1"x2, 1.6"x2, 1.5"x2
pad area - 11.8"^2
rotor thickness - 1.4"
stoptech upgrade (around $1800 to $2000)
caliper - 4 pistons (will fit in stock 17" wheel)
rotor - 13.1"
stock gs brakes
font caliper - 2 pistons, 15lb
front rotor - 11.5" diameter, 18lb
rear rotor - 12" diameter, 12lb
supra tt upgrade (around a bit over $1000)
caliper - 4 pistons, 15lb
rotor - 12.7" diameter, 20lb
brembo GT upgrade (around $2800 to $3000)
caliper - 4 pistons, 7lb
rotor - 13.1"
piston area - 1.5"x2, 1.73"x2
pad area - 9.6"^2
rotor thickness - 1.26"
ap racing upgrade (around $3200 retail, there is a GB now for $2599
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
caliper - 6 pistons, 6lb
rotor - 13.5"
piston area - 1.1"x2, 1.6"x2, 1.5"x2
pad area - 11.8"^2
rotor thickness - 1.4"
stoptech upgrade (around $1800 to $2000)
caliper - 4 pistons (will fit in stock 17" wheel)
rotor - 13.1"
ENDLESS 6 pot Calipers 6lbs and sexy as hell
13.5 rotors as well
Price has been lowered actually
www.endlessusa.com
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