The curious case of the Atom 4 brakes

[speedmachine]

Maybe a stupid question, why does the caliper need to come off for pads?

[reg]

Maybe a stupid question, why does the caliper need to come off for pads?

Not a stupid question at all. I’ve got the anti rattle springs fitted so the advice was that it’d be easier to drop the calipers and fit the pads from the underside. I think once the springs are omitted the pads can be changes with the calipers in situ.

[reg]

Pads bedded in pretty quickly, it was obvious early on how much better the setup was!

Feel is really good, loads of bite, but not grabby at all on the road. From cold there are no problems with the RS14. They do bite harder when they are warm for sure, but it's not a problem as far as I can tell? Discs look good, even all over and when you do push the tyres to the point where they start to lock you can feel what is going on, really nice. Another welcome return is that when you lightly press the pedal it scrubs off speed without you having to put much into it, OE stuff never gave this feeling, not with my setup anyway. Ultimate stopping power probably not that much different, but the 5000's give you so much confidence. The pedal travel is about 20mm, it never varies, at the track it was perfect all day. I really wish I had put RS14s in from the start now.

So there we have it. The curious case of the Atom 4 brakes.....done!

In summary;

1. OE setup - pedal issues, wooden
2. Factory service, pedal ok for 200 miles - big issues on track
3. Fit brace, knockback springs, up one size on both master cylinders and RS14s - balance issues, heavily locking rears
4. Fit 5000r calipers with 1144s using the OE two piece AP discs and 2 x 0.7 master cylinders (IIRC) - good on the road, pads getting hot on track, a bit wooden
5. Fit RS14s - Jizzy

A huge thanks to, in no particular order;

Steve, always on the phone to give advice, genuinely engaged in the process of improving things, top man.
Ben @corton miller for putting so much time into developing this kit and supporting the process, really good guy to deal with a very professional outfit.
Chris/Paul/Phil/Ian all have given me loads of help, and when things were properly shite and certain members of the community were taking the piss all the time you kept me sane.

At Anglessey if anyone wants to have a try you are more than welcome, I guarantee you'll be blown away.

/end

[8_enj]

Hi,

With all the changes and adaptations throughout what did it cost all together?

[reg]

Hi,

Best bet is to give Ben at Corton Miller a shout for the 5000s and brace.

RS14s are around £500, master cylinders are £100 or so.

[plip1953]

The story isn't quite over!!

Next thing will be abs!!!!!!

[8_enj]

For people who are curious this is the brake packages/prices.


3 brake packages for the Ariel atom 4

All the brake packages are built upon the latest generation AP pro5000R
caliper (different piston sizes front and rear) aesthetically the calipers
look the same.

Package1: £3087.50 +vat
Pro 5000R calipers
288 CM conversion mounting brackets Front and Rear
Mounting hardware
Pagid RS14 pads (2sets)
This allows the use of your original 288mm current factory brake discs with
the new AP caliper and brake pads.

Package2: £4771.00 +vat
Pro 5000R calipers
295mm CM conversion brackets front and rear
Ap-racing 295mm rotors
CM bolted style bells
Pagid RS14 pads (2 sets)
Anti rattle springs (optional)
Package 2 was built around customers who predominantly use the cars on the
road that want an upgrade over the factory brake kit and do the occasional
track day. We typically find that you have less noise with the bolted type
arrangement.


Package3: £5031.00 +vat
Race kit, as above with the addition of a floating brake bell assembly
versus the bolted style for greater heat expansion and contraction.(can
still be used on the road)

[Curves Junkie]

Next thing will be abs!!!!!!

If you want to do this, there is more to install than the ABS Block itself.

[Pcodeseattle]

For people who are curious this is the brake packages/prices.


3 brake packages for the Ariel atom 4

All the brake packages are built upon the latest generation AP pro5000R
caliper (different piston sizes front and rear) aesthetically the calipers
look the same.

Package1: £3087.50 +vat
Pro 5000R calipers
288 CM conversion mounting brackets Front and Rear
Mounting hardware
Pagid RS14 pads (2sets)
This allows the use of your original 288mm current factory brake discs with
the new AP caliper and brake pads.

Package2: £4771.00 +vat
Pro 5000R calipers
295mm CM conversion brackets front and rear
Ap-racing 295mm rotors
CM bolted style bells
Pagid RS14 pads (2 sets)
Anti rattle springs (optional)
Package 2 was built around customers who predominantly use the cars on the
road that want an upgrade over the factory brake kit and do the occasional
track day. We typically find that you have less noise with the bolted type
arrangement.


Package3: £5031.00 +vat
Race kit, as above with the addition of a floating brake bell assembly
versus the bolted style for greater heat expansion and contraction.(can
still be used on the road)

Question, who is selling them as kits like this? And can I have one of these shipped to the US?

[Corten-Miller]

Next thing will be abs!!!!!!

If you want to do this, there is more to install than the ABS Block itself.

I think we understand what is involved to install motorsport ABS into a car.

[Charlie]

Next thing will be abs!!!!!!

If you want to do this, there is more to install than the ABS Block itself.

I think we understand what is involved to install motorsport ABS into a car.

I previously started this thread viewtopic.php?f=60&t=18729 it may not be as hard as you think to get an acceptable abs.

[plip1953]

I've heard very good things about the MK60 system, although got the impression it was only certain versions that are re-programmable (eg as on certain BMW E46 M3 models including all CSLs) and that these units were like hen's teeth to source. But even if you can find such a unit I don't believe they are a patch on something like the Bosch Motorsport system.

[Curves Junkie]

Next thing will be abs!!!!!!

If you want to do this, there is more to install than the ABS Block itself.

I think we understand what is involved to install motorsport ABS into a car.

But the answer sounds very pretentious.

As a tuning company, you should know how to perfectly configure and install a fully functioning ABS in an Ariel Atom - at least that's what I hope.

I was actually referring to those who want to do it themselves.
It's a lot of work, a lot of changes have to be made. You can't take a mass-produced ABS unless it can be fully configured. But most road-legal ABS cannot be freely programmed.

And yes, it costs a lot of money.
You simply have to ask yourself what is cheaper.
In an accident, the frame is almost always defective and has to be replaced. I don't need to talk about the damage to health. It can be a lifesaver.

BTW, yes, I have done it.
It takes Ariel riding to a whole other dimension.

[Yorkshire]

BTW, yes, I have done it.

Out of interest which ABS system did you install in your Atom?

Thanks

Stuart

[plip1953]

If you want to do this, there is more to install than the ABS Block itself.

I think we understand what is involved to install motorsport ABS into a car.

But the answer sounds very pretentious.

As a tuning company, you should know how to perfectly configure and install a fully functioning ABS in an Ariel Atom - at least that's what I hope.

I was actually referring to those who want to do it themselves.
It's a lot of work, a lot of changes have to be made. You can't take a mass-produced ABS unless it can be fully configured. But most road-legal ABS cannot be freely programmed.

And yes, it costs a lot of money.
You simply have to ask yourself what is cheaper.
In an accident, the frame is almost always defective and has to be replaced. I don't need to talk about the damage to health. It can be a lifesaver.

BTW, yes, I have done it.
It takes Ariel riding to a whole other dimension.

Bosch M5 abs is essentially a standalone system, and potentially quite simple to install. Probably the only tricky bit is ensuring you have suitable wheel speed sensors. Of course you will also need a power supply and and new hydraulic lines.

Have I missed anything?