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All you need to know about big brakes (Credit to vinnyvangough)


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#1 Paddy gti

Paddy gti

    Its a Ford Thing

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Posted 24 April 2017 - 07:57 AM

All credit for this post goes to vinnyvangough the original post suffered a barage of spam posts 43 pages totaling 700+ spam posts, made more sense to repost than spend hours removing them from the original.


WHY ARE BIG BRAKES BETTER?

Big brakes use what scientists call "mechanical advantage". Imagine taking a bicycle wheel and spinning it while you hold the axle. Try and slow it down by grabbing it near the centre and it takes a lot more effort than if you grab it near the rim. The further you get rom the centre of rotation, the less efort it takes. The same applies to brakes, i you make the disc bigger, the orce you apply will have more effect, i you apply more force with a stronger caliper you'll have even more powerful brakes.

HOW WILL BIGGER BRAKES MAKE MY CAR FASTER

Having more confidence in your stopping ability means you will brake later and therefore stay on the gas longer. It also means that you will be spending less time braking as the brakes work harder or less time. Remember , you can't steer or accelerate while braking so the less time you spend on the middle pedal, the faster you'll go.

BUT WONT UPRATED DISCS AND PADS HAVE THE SAME EFFECT

Uprated discs and pads in standard size are OK for slight improvements in braking feel and stopping distances. But until the disc diameter or caliper size/number of pistons increases you'll still ultimately have the same braking force.

WHAT DOES THE TERM 'POT' MEAN - 4-POT, 6-POT ETC?

This is simply another term used for pistons in the brake caliper. On most cars a factory caliper contains a single large piston to keep costs down. The first caliper upgrade is normally 4-pot - The most affordable option. At the far end of the scale, Tar-Ox have released a massive 16 pot caliper!!!

SO WHAT SHOULD I LOOK FOR?

Choosing the right big brakes depends on three factors, physical room behind your wheel, your budget, and how hard you drive. Most manufacturers specify the size of wheels discs will fit under so that one's dealt with.
Secondly, your budget is up to you but you can get an amazing set-up for under £1500. Compare that to what you spend on wheels or ICE and it suddenly seems reasonable.
How hard you drive is up to you.....

HOW THEY WORK

A brake disc is sandwiched between the wheel and the wheel hub. When you hit the brake pedal, brake fluid is forced through the brake lines and pushes out the pistons in your brake caliper. This squeezes the brake pads onto the rotating disc.
Braking power is then dictated by the number of pistons in the caliper and their size, as well as the diameter of the brake disc. Increasing the number of pistons and going bigger with your disc diameter, the better your brakes will be.

All extracts from various sources
Any extra info welcome



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