kene

iTrader: (2)

the 2 brackets by themselves weigh about 15-20lbs.. very sturdy.. trust me
they are about a half an inch thick...I'll measure when I get home.

as for matching the fluid rate to the caliper I understand your logic, but consider this:

What if the overall area of the internal orifice's inside the corvette calipers is just the same as the LS400's?
Let's even say.....

EDIT: (Added)

Matter of fact check this out:




















1993 GS300 Master Cylinder bore(1993 all I could find): 11/16"
2000 LS400 Master cylinder Bore: 1" (same)
2007 Zo6 Master cylinder Bore: 1"(same)

Example(For LS400 and Zo6):
Calculate the line pressure of a 1" bore master cylinder using a 7:1 ratio pedal.
Leg Force (Effort) = 150 lbs.
Pedal Ratio = 7:1
Square Inches of Area (1" Bore Master Cylinder) = .785_____[pi * ((1")/2) * ((1")/2)]

(150 x 7)/(.785) = 1,337 psi



Example(For Gs300):
Calculate the line pressure of a 11/16" bore master cylinder using a 7:1 ratio pedal.
Leg Force (Effort) = 150 lbs.
Pedal Ratio = 7:1
Square Inches of Area (11/16" Diameter Bore Master Cylinder)] = .371____[pi * ((11/16")/2) * ((11/16")/2)]

(150 x 7)/(.371) = 2,830 psi


Same pressure for LS400 and Zo6
Based on the Calculations, the GS300 Master cylinder will not flow as much as the LS400 and Zo6 Master Cylinders. Now Between the LS400 Master cylinder and the Zo6 Master cylinder. Ideally, they flow the same(1" Bore Diameter). So the difference would be in the internal orifices of the 2 - calipers themselves.

_________________

Gs300's Master cylinder is lacking in terms of flow(when used with LS400 calipers or Zo6 calipers), that is why the pressure is higher. there is more strain on its master cylinder than when compared to the others because it is only 68% of the piston bore area of the LS400 and Zo6 MC's.(This is under the assumption that all push rods are the same length)

If we compare the Zo6 and LS400 Calipers Flow rate I'm gonna use this equation:

Q = A * V
Q is the flow rate
A is the circular area of the master cylinder piston
V is the velocity at which the fluid moves or better yet how quick the brake pedal is pressed(layman's terms).

LS400_______ Zo6
Q = A * V_______ Q = A * V

Now I don't have the Velocity at which the brake fluid will move through the system when pressed, but It doesn't matter, 1) because both LS400 and Zo6 have 3/16" hard brake lines(LS400 have metric. very close), 2) I will be stepping on the pedal at the same speed in both scenarios. Therefore "V" can be ignored. Which leaves the equation:

LS400_______ Zo6
Q = A _______ Q = A

And between the LS400 and the Zo6 the Area was found to be the same based on the above findings from the master cylinder dimensions. So in turn the Flow rate is the same on the LS400 master cylinder and the Zo6 master cylinder. The only things affecting performance[neglecting rotor diameter, type of pads, etc.] between these calipers when installed on a gs300 is the internal brake fluid passages.

If several people have been running LS400 calipers on the lower piston area GS300 Master cylinders with out a problem, then based on these calculations there should be no problem using the Zo6 calipers considering the master cylinder pressure, piston area, and flow rate is just about the same between the two.




___________________________



Equations I used:

Continuity Equation
Q = A * V

Pressure Equation
P = (F)/(A)

Definitions:
Q = Flow Rate
A = Area
V = Velocity
P = Pressure
F = Force
A = Area




Extra info that might be interesting:

http://www.outlawdiscbrakes.com/faq.html
http://www.mpbrakes.com/uploads/docu...alratiopdf.pdf







EDIT Added:
I may have overlooked one thing that will cause a difference in the flow rate between the LS400 Master cylinder and the Zo6 Master cylinder... the the fluid passage ports.

On the Zo6 they are bigger than the LS400's, but the push rod depth on the LS400 travels further, than the Zo6 so it may be break even.

Will look into this a bit later.

kene

iTrader: (2)

Correction each bracket is about 8lbs individually. So around 16 lbs total.

fastryan

wow ! i can drive a short 5 mi. road (private) and get all for brakes so hot im scared to park the car. so i do a slow lap around the house and you could still cook steak on em. 7.5 mi. = brake pedal hits the floor. i need brakes.