750i MC upgrade myths

[cthulu703]

I did the swap and found that it increases feedback quite a bit, very important when close to threshhold. I agree it doesn't affect brake pressure, just line pressure/pedal travel. If you don't like alot of feed back then don't do it, but a new one was cheaper than the direct replacement one, so you lose nothing by doing it.

[PeaveyBassist]

Oh I missed the joke in we hate you shame on me.

Have you missed the joke of me being a smart ass a lot in the past couple months? Who is constantly pissing in YOUR cornflakes???

Will

[static]

Here is what I am missing. Some idiot noob misquotes me and somehow I get dragged into this shit. Who pissed in your cornflakes Will?

please explain how exactly i misquoted you. i have not even quoted you on the first place.

there is no shame in accepting you've made a mistake, but you do make yourself look immature by continuing being ignorant about it and calling others names in the process.

I am sorry if i hurt your feelings in any way, did not mean to pick on you, just needed to give Jordan an example.

And if you still haven't caught the drift of my thread, let me spell it out: it's mostly to help people like you. But it's really up to you if you want to be helped, some people prefer to stay ignorant. It's the world we live in.

have a good one
Alex

[PeaveyBassist]

Wow... this thread went to shits ;) Sorry for pooping on your thread. Maybe we should have Pasha poop on Mr. Parkerbink's hood

Will

[static]

Wow... this thread went to shits ;) Sorry for pooping on your thread. Maybe we should have Pasha poop on Mr. Parkerbink's hood

Will

not to worry, let him show how much of a clown he really is.
i just feel bad for moderators having to clean up after babies.

to parkerbink:
now i just have to quote you:

in reference to SS lines...

Mine were visibly fine but I had increased the pressure of the system with a new 750 mc and felt it was wise to replace the 15 year old rubber hoses.

hmm let's see: "increased pressure", hmm aha "new 750 mc" , hm.. looks like you say that the new 750 mc had resulted in increased pressure. Which is by the way an absurd.


Alex

[PeaveyBassist]

Althogh... 750mc pushed the same distance as the stock one would create more pressure. But... the point behind the bigger master cylinder is pushing the pedal less to create the SAME pressure on the discs. So... it really depends on how far the pedal is pushed.

Will

[static]

Althogh... 750mc pushed the same distance as the stock one would create more pressure. But... the point behind the bigger master cylinder is pushing the pedal less to create the SAME pressure on the discs. So... it really depends on how far the pedal is pushed.

Will

sorry bud but it's not exactly how it works.

Forget Pressure for a second. Force exerted on the mc piston times the Distance traveled is Work. Golden rule is that work stays the same (constant) in the enclosed system. So by having larger area pistons on the calipers, the Distance that caliper pistons travel is less (since the volume of the brake fluid is constant) and thus the Force is more (since F*D has to be constant)

Now think what happens when you increase the area of mc piston while having the same amount of Force applied by your foot... see it?

Alex

[PeaveyBassist]

How would the pistons in the caliper travel less? I think about it differently. F*D of the pedal/master cylinder. bigger master cylinder = more force so distance the pedal travels is less. Am I wrong?

Will

[PeaveyBassist]

Larger piston ONLY means more pressure if the pedal is moved the same distance as the old one. Dont be a douche. kthksbye

Will

[RCWells]

Big braking power is good stuff for those that want to stop in a timely and orderly fashion. So, I have come up with my OWN equation:

Stopping force x work + 23.874 (being the constant variable here) -stainless steel brake lines (less pressure exerted onto an otherwise equal field of play) x 3.14 (aka, pi) / 10, which is just a good round number that I like, x some effort on the part of the driver represented by heel pressure defined as the amount of pushing required by several leg muscles in conjunction with one another as set forth by outside stimulus translated into a nerve impulse + 69 (just another great number) = hell, i don't know, let it equal a number that you like. So, if you want a 95mm MC, get one. If you don't, don't.

[rwh11385]

wellls dstop talking out of your ass

parkerbrink=assclown

will peavey = sexy.

static = cool

dave coleman = god

technobabble, pg. 23 of sportcompactcar, jan '06:

"a bigger master cylinder will make your brake pedal firmer." ... "a smaller piston in your caliper will do the same thing"

i.e. if you taket hte inverse of the second fact, and you think about it, a larger piston'ed caliper will make the pedal softer, and a larger master like jordon's mentioned would be necessary to make it feel like stock.


and finally., if dave said it, it is true : "shiny paint is for sissies"

... I'm durnk

[static]

Larger piston ONLY means more pressure if the pedal is moved the same distance as the old one. Dont be a douche. kthksbye

Will

with larger pisto you won't be able to push the pedal the same distance, unless:
a. you bend the pedal
b. you boil the fluid
c. you stretch the hell out of your lines
d. the pad goes through the rotor
(list is not comprehensive)

say the maximum amount of force you are able to apply with your foot is F, with larger piston you will have to push more than F to create the same amount of pressure in the system. (which would be impossible since F is your maximum to begin with)

a very good read:

http://auto.howstuffworks.com/brake.htm

Alex

[rwh11385]

okay Stefan.... in 2 years, the physics of how cars and brakes work will change. Nope. this isn't social or age wisdom related you dumbfuck, it's how cars work. You are a moron.

[rwh11385]

stupidity offends me

[rwh11385]

look dude, you and others are some dumbass rednecks thinking the larger master cylinder in an upgrade. it's one thing to live in your own ignorant ricer world, but another to spread such misinformation.

leave them be, unless you increase the size of the pistons in your calipers and need to adjust the MC size to accommodate this.