LCR or Ibiza Bocanegra
- Thread starter AntneeUK
- Start date
Did not know that!! I like the seat spot logo anyways so i'm happy! They really are amazing brakes!
Ibiza has single piston calipers as standard and the AP Racing brake upgrade are four pots.
Not 100% on the MK2 Leon Cupra I just thought they used the same brakes as the MK5 R32 which I thought were twin pots like the Mk4 R32.
Most car brakes are single piston, the piston comes out and the caliper slides across pulling the outer pad into the disc.
They look like rear brake callipers. I would not drive any car that had single-pots on the front, that's barmy! And yeah, the Mk2 Leon Cupra has twin-pots, which ain't right either, but then again, the Mk1 Leon Cupra had twin-pots too; only the Cupra R had Brembo 4-pots.
When you say "most car brakes are single piston", and don't shoot me for asking, but what is your experience to make this statement? Most I've seen have been twin-pots and of the floating/sliding type that you describe
I went for a test drive in the bocronegra a few months back thinking i would hate the DSG gearbox, went for spin put it in sport mode to activate the paddles and i loved it, changed reall smooth and quickly. I loved the sound of the exhaust on it to one thing i miss having a diesel. as for performance for a 1.4 turbo supercharged car it went really really well. Felt like my tdi after a stage 1 map which also had 180bhp. I did have five mins where i thought about trading my car in for one but on the drive back home i decided i like the power in my car better. I want to see the new disel FR that comes out this year sometime hope it had the 2.0 tdi common rail engine in it.
16 years as a technician (last 11 years working on VAG cars) and the MK1 Leon Cupra has single piston front brakes, same 312mm set up as Audi TT, S3 etc.
OK, that's cool. I've honestly never seen single piston front brakes and I'm still a little scared by that! I have many reasons!
Even my cheapest bike had twin-pot callipers too, and my 1000 had 4-pots. What the hell is the excuse for single piston callipers on the front brakes of a car? (Apart from costs?)
More pistons dont always mean better brakes.
Four main things that effect braking
Co efficient of materials (type of pad and disc, carbon etc)
Clamping force (multiple pistons may increase this but its more about an even force, two pots half the size wil gave the same force as one large piston, has the same surface area)
Number of surfaces (only normally two pads regardless of pistons)
Mean effective radius (discs diameter, bigger disc more leverage)
Four main things that effect braking
Co efficient of materials (type of pad and disc, carbon etc)
Clamping force (multiple pistons may increase this but its more about an even force, two pots half the size wil gave the same force as one large piston, has the same surface area)
Number of surfaces (only normally two pads regardless of pistons)
Mean effective radius (discs diameter, bigger disc more leverage)
I agree, to a degree. One piston puts all of your eggs in one basket, which I don't ever like to do. Also, having pistons on either side of the calliper makes better use of the available force, usually providing better feedback when everything else is equal. You're only moving piston/pad, rather than the whole calliper when you've only got one pot (or even twin-pots and they're both on the one side).
You are quite right though; more pistons isn't always better, but the distributed pressure of an larger number of pistons does apply the braking force in a more efficient manner and also gives more even wear on your pads.
You are quite right though; more pistons isn't always better, but the distributed pressure of an larger number of pistons does apply the braking force in a more efficient manner and also gives more even wear on your pads.
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