I cant see a huge advantage in doing this. Most master cylinders are dual line so I dont see the advantage of running two single line master cylinders as opposed to one dual line, or are you suggesting running two dual line master cylinders?
I would suggest talking to dattoman1000 on performance forums.
From a strictly engineering point of view:
Using two dual line master cylinders instead of one just means that each master cylinder will displace half of the fluid of a single dual line master cylinder inorder to provide the same slave cylinder displacements. Or alternatively the pedal will only have to move half the distance with two master cylinders as opposed to one.
Pressure (in brake system) = Force (on piston) / Area (of piston)
For 1 master cylinder the force is distributed over one piston area, but for two master cylinders the force is effectively applied over two piston areas (or the equivalent single 'large' piston area), i.e.
1 Master Cylinder: Pressure = Force / Area
2 Master Cylinders: Pressure = Force / (2 x Area)
= (1/2) (Force / Area)
= (1/2) 1 Master Cylinder
So for two master cylinders you will be halving the pressure in the system for a given applied force thus making braking more difficult !!!
I am not suggesting putting on the smallest possible master cylinder to maximise pressure in the line as you will run into problems with insufficient brake fluid displacement. It is a compromise between displacement and piston size.
This is why master cylinder pistons are usually small compared to slave cylinder pistons - to provide a mechanical gain via hydaulics.
Sun, 14 September 2003 14:53
