dumb lazy brakes question

[Top Gear TVR]

Joe, I meant with no hydraulic disconnection

[v8s4me]

Ah no, not quite that simple. That's just being lazy though

[Top Gear TVR]

v8s4me said:

Ah no, not quite that simple. That's just being lazy though

This the name of the post 😘

[Kitchski]

Top Gear TVR said:

This the name of the post ??

To be fair to Joe, it said "lazy", not 'exceptionally and possibly slightly unrealistically lazy'

That said, on the 278mm conversion, it's possible to use Mondeo V6 brakes. If you get Mondeo mk1 V6, you get fat calipers, matching carriers and the whole bit.
If you use mk2 gear (so ST24/ST200 etc., which is much more common) you still get the 278mm discs, but you also get the pissy little calipers used on the 2.0 models with 260mm discs, and the same pads. This means what you end up with is a brake disc where the pad doesn't grip the last 20% of the disc, meaning less contact and a nice rusty ring in the middle. And nobody loves a rusty ring.

I thought I'd been diddled when doing this on my old Chimaera, so as I worked for Ford at the time, I set about doing some research on the part computers. To my surprise (I hadn't been at Ford long, I was naive to the sort of penny-pinching they do) that is how the Mondeos left the factory!

[RobXjcoupe]

Kitchski said:

Top Gear TVR said:

This the name of the post ??

To be fair to Joe, it said "lazy", not 'exceptionally and possibly slightly unrealistically lazy'

That said, on the 278mm conversion, it's possible to use Mondeo V6 brakes. If you get Mondeo mk1 V6, you get fat calipers, matching carriers and the whole bit.
If you use mk2 gear (so ST24/ST200 etc., which is much more common) you still get the 278mm discs, but you also get the pissy little calipers used on the 2.0 models with 260mm discs, and the same pads. This means what you end up with is a brake disc where the pad doesn't grip the last 20% of the disc, meaning less contact and a nice rusty ring in the middle. And nobody loves a rusty ring.

I thought I'd been diddled when doing this on my old Chimaera, so as I worked for Ford at the time, I set about doing some research on the part computers. To my surprise (I hadn't been at Ford long, I was naive to the sort of penny-pinching they do) that is how the Mondeos left the factory!

The early mk2 mondeo v6 used the same small caliper. The later mk2 v6 used larger calipers. The latest version of the v6 caliper and 278mm disc can be found off the front of a fiesta st180 1.6 turbo or slightly older fiesta st150 2.0 n/a.
Picture below is a later mk2 v6 mondeo caliper with a 278mm st150 front disc.


You can see the caliper uses the whole of the disc rather than most of it. Also this picture isn't a TVR incase someone points that out but the mounts and disc size gives an idea of it actually fitting together nicely. Just for details sake. I used the st150 disc as it's offset is different to a v6 mondeo 278mm disc. To use the mondeo version requires a 3mm spacer on the actual hub before mounting the disc. The st150 disc does away with the hub/disc spacer as its dimensions allows straight forward mounting running correctly between the carrier and caliper

[DamianS3]

I agree the larger calliper and pad is preferable but moving the small pad out on the larger disk would improve braking performance as the pad has more leverage on the spinning disk.

Damian S3

[v8s4me]

Top Gear TVR said:

....This the name of the post 😘 ??

I was a little bit puzzled by the 😘 bit so I googled it. I am now seriously worried.

[Top Gear TVR]

I suspect the answer is 'dunno' - I'll do a bit of investigation

[Kitchski]

DamianS3 said:

I agree the larger calliper and pad is preferable but moving the small pad out on the larger disk would improve braking performance as the pad has more leverage on the spinning disk.

Damian S3

In theory, yes. In reality, it made no noticeable difference at all.

[DamianS3]

Kitchski said:

In theory, yes. In reality, it made no noticeable difference at all.

Interesting... perhaps the increase in surface speed negates leverage or perhaps the pads don't have enough bite..? So much for theory.. they must run cooler though surly?

Damian

[Kitchski]

DamianS3 said:

Interesting... perhaps the increase in surface speed negates leverage or perhaps the pads don't have enough bite..? So much for theory.. they must run cooler though surly?

Damian

Never did anything more than road driving with them. I think the difference would probably be equal to hitting your thumb with a hammer, and hitting it with a hammer which is 2lb heavier.

[phillpot]

I tend to agree (about the brakes, not the hammer) an increase of just 10mm on the radius is not going to make any radical and quite possibly not even detectable difference in the real world of blatting around a few A & B roads.

[Kitchski]

phillpot said:

I tend to agree (about the brakes, not the hammer)

You think an extra 2lb would make a noticeable difference?

[glenrobbo]

Yep, I reckon your thumb would be noticeably flatter!



Well, before the swelling takes effect. then the 'l' is deleted and it just becomes fatter!

Edited by glenrobbo on Saturday 17th December 11:43

[Kitchski]

It's a bi-monthly occurrence for me!