Brakes

[MarkV6]

Can I throw in another 'theory'??

Say the standard caliper piston area is 100mm/sq, could you have a 4 pot caliper with piston areas of 25mm/sq (25 x 4 = 100).
Overall the piston area is the same, but spread out over a greater area so you would need bigger discs as well.

So bigger discs have more torque on the wheel as the pads are further from the center, but because the piston area is the same surely roughly the same amount of fluid is needed to move the pistons?

Otherwise all the 4/6/10 pot kits for sale should recommend an upgraded master cylinder to move the extra fluid required? Plus the extra pistons can't be too big because of the caliper dimensions to fit behind various wheel sizes...

[Stupink]

Na its deffo easier. Hydraulics is same as leverage, bigger arm is easier to apply more force but needs longer throw.

If one syringe produces 10psi over one square inch of surface, and slave cylinder is two square inches, it still has 10psi but over both those inches so has 20lbs but master only has 10lbs to create those 20lbs.
Same setup with smaller slave only 1inch you'd get 10lbs both ends.

Having said that I have been trying to get to sleep the last hour lol! So maybe I'm talking tripe! Lol.

[v6 steve]

Sorry guys to bring this back up but.
Went out in the v6 dry road doing about 70mph hit brakes hard abs off and it didnt lock up so it looks like im back to the drawing board,
The discs are being skimed tomorow as there is a little lip and pitting but i would have thought that they would have still locked up, they have passed the MOT 2 weeks ago

[Mark1]

The lip is not the problem and skimming is not going to help, never happy when people play with dics, I'd say that you may will have air in the system still.

[Mark1]

I should have add that the fill on mine is not gerat but does get the car stopped quickly.

[v6 steve]

Once iv got the new hoses im going to put new fluid in and new pads just hope that works but think ill rebleed it in the meen time

[v6 steve]

How fast did it slow from 70mph?
Did you have the clutch in? Clutch in
How hard did you push the brake pedal? Have you seen the size of my legs
New tyres or old tyres? new front old back but well legal

I'd have left the ABS on, as locking the wheels at 70 could be a bit dangerous. like to lie on the wild side lol
think my foot went a long way down as already said there must be air in the fuild

[Fraz]

ok who bled the brakes.....bet it was same person the done up the wheels nuts

[v6 steve]