Installing Stoptech brakes

[gothspeed]

Originally Posted by bcwawright

Big brakes are only for the fastest 355 in the world...which is mine if I can just get it back together...lol

Still can't figure out which of these bumpers goes on the front.......also what's all these radiators for??.....isn't this thing supposed to be air-cooled?

Thats the truth!!! You need to get that bad boy together Bruce .......

[bcwawright]

Originally Posted by gothspeed

Thats the truth!!! You need to get that bad boy together Bruce .......

I may have to get the stooges to head east...lol

I am almost finished acquiring all of the needed parts to begin the build....so many of the parts are very rare and hard to find and the rest had to be custom built and I'm sure that during the rebuild there will be a lot of extra mod's.

Trying to get that old grey fox(Helmsmeister) in boulder to head up the engine build...Dave, your almost new complete CH gearbox is still setting at the foot of my bed,hint hint...lol

One of the hard parts of this rebuild is intigrating the 348 manual spider top, roll cage, and the 360CS carbon seats so everything will be safe and workable.

This car may eventually have center lock hubs as I have now figured out what it will take to withstand severe track use.

One day this thing will be rolling down the highway without a trailer...lol

[fatbillybob]

Originally Posted by Mitch Alsup

Your argument is not about the radius of the rotor or of the applied load on the rotor, but of the stiffness of the caliper in applying that load.

As an engineer:
How does one balance the extra torque provided by a bigger rotor vs the increase in inertia that must be stopped?

[Mitch Alsup]

Originally Posted by fatbillybob

As an engineer:
How does one balance the extra torque provided by a bigger rotor vs the increase in inertia that must be stopped?

http://phors.locost7.info/phors11.htm

By and large, the rate of decleration is limited by the tire and not the brakes. You can prove this by putting on tires with much greater grip (or much lower grip). So if you are on street tires, put on some racing slicks and measure the different stopping distances. If you have a race car on slicks, put on some street tires and measure the difference. Brakes did not change so the change in distance has to be related to what did!

But back to your question from a few days ago: do big brakes help in the 0.1 second range. Answer: I don't know, but I do know that it takes more than 0.1 seconds for the front end to compress after the brakes start retarding the car, and until the front end compresses the brakes are not as effective as they will be after it compresses and the car takes a "set".

Then there is the issue of mu: the coefficient of brake torque with respect to pad pressure. I do know that the DS2500 pads I use (street and track) have a mu=0.52 (after they get a little heat in them) and that these pads are vastly better than the stock Ferrari pads (mu near 0.40). When hitting the braks from (say) 150+ the stock Ferrari pads give every indication that they went form cold to fade in about 6 feet, while the DS2500s give much more instantaneous bite AND continuing high levels of bite as the car decelerates.

[F355Bob]

I run 255 fronts on a 9 inch rim and the brakes work much better than the stock 225.

[MaleficVTwin]

Mitch beat me to it. The best upgrade you can do to braking is better tires.

The StopTechs look great, though.