Master cylinder orientation

[Johnson]

Can you please help on how should I decide the orientation of my master cylinder i.e. what should be the inclination of push rod with the brake pedal?
when we keep the pushrod vertical or inclined the pressure of the fluid at the bottom will be more (in comparison when master cylinder is horizontal)and also if I am right giving an inclination reduces the time of transmission of force to the calliper from master cylinder ,but at the same time as the pedal ratio has almost dropped down as the balance bar is mounted at almost the same distance as pedal pad so how do we compensate for that loss I am not able to decide what value of inclination take or I should not take any inclination?

[Johnson]

Can you please help on how should I decide the orientation of my master cylinder i.e. what should be the inclination of push rod with the brake pedal?
when we keep the pushrod vertical or inclined the pressure of the fluid at the bottom will be more (in comparison when master cylinder is horizontal)and also if I am right giving an inclination reduces the time of transmission of force to the calliper from master cylinder ,but at the same time as the pedal ratio has almost dropped down as the balance bar is mounted at almost the same distance as pedal pad so how do we compensate for that loss I am not able to decide what value of inclination take or I should not take any inclination?

[Dsenechal]

Umm statics? Seems like a summation of moments... Just a thought. Maybe that along with piston diameter will give you what your looking for.

[Xeilos]

To be completely honest. If you treat this as a statics problem at various angles of pedal travel, it is easily solvable. You can do all of your analysis from a FBD and using excel with some fancy trigonometry (if you avoid using kinematics and dynamics and PDE's). I completed this analysis for our car in the summer between first and second year.

You can determine your effective pedal ratio through forces and through the change in length for a given rotational change in the pedal.

You are going into hydrostatics of brake fluid; you mention the pressure of the fluid and the bottom of the master cylinder. This is a waste of time (Think of the hydrostatics of the remote reservoir mounted above the caliper height and the effectes therein).

I am not sure what you are referencing to with regards to the time of transmission. The transmission of force through brake fluid is roughly the speed of sound in the brake fluid (very very high). And fluid being pumped through can be determined through the above calculations.

Also in the future please use periods to seperate sentences and paragraphs for seperate topics so we know what you are talking about. Thanks.