bigger brakes

[jeeves_101]

with regards to bigger brakes, is it possible just to mount the existing calipers of the vts further out, so bigger discs can be used?

iirc this should give improved braking as the force is being applied further from the centre.

the reason i ask is due to the fact that this would keep the unsprung weight down.

so, would fitting some uprated pads and then mounting the calipers further away and using 283mm discs be worth while?

cheers

[Toad]

No man.

Bigger calipers are bigger for a reason. The pistons on the GTI6 calipers are bigger, hence the extra braking power. The reason you have bigger discs, it to allow a bigger area of the brake pad to make contact with the surface of the disk. The further outward on the disc the pads make contact, will increase the braking power also.

[jeeves_101]

so if i mount the pads further out, i would see i slight improvement then?

[KamRacing]

No man.

Bigger calipers are bigger for a reason. The pistons on the GTI6 calipers are bigger, hence the extra braking power. The reason you have bigger discs, it to allow a bigger area of the brake pad to make contact with the surface of the disk. The further outward on the disc the pads make contact, will increase the braking power also.

yes but why do you want a bigger area. Its not to do with friction.....

with regards to bigger brakes, is it possible just to mount the existing calipers of the vts further out, so bigger discs can be used?

iirc this should give improved braking as the force is being applied further from the centre.

the reason i ask is due to the fact that this would keep the unsprung weight down.

so, would fitting some uprated pads and then mounting the calipers further away and using 283mm discs be worth while?

cheers

Yes you can but I doubt it will make much difference, though it will by a small amount. I've had a kit on my 205 and it did just that, though i'd not do it again as the disks were very heavy for no distinguishable gain...

[jeeves_101]

oh right ok, cheers.

what would be my best option? obviously some nice 4 pot billet ally brakes, but otherwise whats better?

266mm brakes or 283mm brakes, i also want to know which is better to have with regards to unsprung weight.

cheers

[Toad]

I don't understand what you mean. The more pad you can get on disk the better. However, the greater the area being put into contact with the disk, requires a greater force (from the caliper) to apply the same pressure as with the smaller pad. So I can imagine there must be a balance (for optimum braking) between contact to disk amount, and pressure being applied from the caliper.

[Toad]

The smaller calipers will be lighter obviously, so less unsprung weight.

[MaRiO89]

266mm will be adequate tbh..

I'm now after some Citroen Sport AP or Alcon 4 pots but they are impossible to find..lol

[jeeves_101]

i know that the 283mm setup will give better performance and that the 266mm setup is lighter and would therefor not affect the handling as much.

i think what i'm trying to ask is, for the extra unsprung weight is the 283mm setup worth the affect on the handling, or is the 266mm setup good enough performance without the affect on the unsprung weight?

cheers

[MaRiO89]

I would go for the 266mm..Plenty powerful enough..Afterall they are designed to stop a car that weighs over 1 tonne with 140 bhp nicely..I'm sure they can handle a saxo which is slagged and weigh's nothing..:P

I have them and they are awesome on and off the track tbh..

[jeeves_101]

cheers for the help james.

[MaRiO89]

No probs dude..;)

[Toad]

I agree. I've got the GTI6 calipers, but It's probably a slight overkill. The 266mm with posh pads will be very good.

[jeeves_101]

what are better pads, the mintex extreme or M1144?

cheers

[MaRiO89]

I agree. I've got the GTI6 calipers, but It's probably a slight overkill. The 266mm with posh pads will be very good.

:y:

266mm with mintex pads and disks and your away tbh! :p

[MaRiO89]

what are better pads, the mintex extreme or M1144?

cheers

Not sure..

I use the mintex brake box setup from ebay..Very good tbh..great stopping power and have lasted a long time aswell..:)

The extreme ones sound like a high performance pad which is good on a track day because it all gets nice and warm etc but on the road not so good..;)

[gary_j]

1144's are the fast road pads, better than extreme but alot more expensive!

[jeeves_101]

this is the link to the extreme ones, (dont seem to have M1144), these two different ones, guessing front and rear but doesn't say.

http://www.potn.co.uk/citroen_c2918_39_32164_32165.htm

good or bad price?

[jeeves_101]

ah right cheers.

will prob go for some M1144 pads and some decent discs, got braided hoses, just need the 266mm calipers and carriers.

[gary_j]

I was thinking about some 1144 pads for my 266 setup but there over £100!

[Toad]

The problem is what your car is used for. If it's on the road, you need a pad that works from cold. You can't have one that's amazing from cold and amazing when hot too. The M1144 pads are a cold pad and work decent for light track use. They won't be perfect around a track though... Then you've got the M1155 pads. You can't use them on the road, but they would be much better on the track.

[gary_j]

The omp road & sport pads are supposed to be good also. They only cost £25 off ebay!

[KamRacing]

I don't understand what you mean. The more pad you can get on disk the better. However, the greater the area being put into contact with the disk, requires a greater force (from the caliper) to apply the same pressure as with the smaller pad. So I can imagine there must be a balance (for optimum braking) between contact to disk amount, and pressure being applied from the caliper.

Hows your physics and knowledge of braking systems as it all gets quite complicated!? Basically whether you have a small pad or a large pad, the force that is being exerted on the disk is the same, the only difference is the area it is applied to. The force of friction is the force down on the object times the coefficient of friction so area does not apply.
A larger pad is for improving pad wear and to aid heat dissipation - nothing else :D With a bigger pad you can stop the pads glazing as the braking system can cope with the dissipation of a greater amount of heat faster, also with more pad physically it takes longer to wear.

Kev

[jeeves_101]

would be using the car normally, with some track use hopefully.

could always have a spare set of discs and pads i spose for track days, ones that are better suited

[Toad]

I'm almost grasping it! ;)

But there must be something else involved here, for example: If you had a brake pad the size of a 1 pence piece, I can't see how it would be able to stop a 266 mm disc as easily as a normal size pad. As the area of the pad is much smaller, surely this means that the force being applied is much greater? However, i think a small pad would struggle... I'm well confused now! :(