16 replies to this topic

[Ricky2772]

check this pic: I installed the front right disc, than it dawned on me that the two discs are exactly the same..... hence..... ....once installed, the direction of the drilled "swirls" will be different from left to right..... I remember reading that the orientation of the swirls must follow the rotation of the tyre, and not the opposite like the one installed in the pic.... quite confused..... coments?

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[Ricky2772]

this is a schematic found on the tarox website.... how the holes should radiate, that is, from the hub backwards!

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[speedyK]

mmh... I think your concern is reasonable. I would definitely ask them for clarification. Probably doesn't make any difference, but on such a light car (especially yours! ) any variation between the respones left and right could/would be more pronounced - not too good.

[jneill]

this is a schematic found on the tarox website.... how the holes should radiate, that is, from the hub backwards!

Ricky, there's a thought - the kerbweight of an original MINI Cooper S is less than 700Kg - including all the passenger seats

You'll have to trade-in the Speedy by the looks of things!

James

[JimH]

- the kerbweight of an original MINI Cooper S is less than 700Kg - including all the passenger seats

Let's just think about that figure for a minute. 4 seats, Storage space everywhere, cast iron engine block and head, lots of carpet, a boot, TWO fuel tanks and no fancy space age aluminium chassis with all sorts of bonded, extruded fuckery foo. And it is STILLL LIGHTER THAN THE VX.

This, apparently, is progress.

[streetboy]

I think you've got a point there Ricky. I wouldn't risk it. You could find that the pads bite harder on one side, shifting the weight on the approach to a corner. If you use trail braking it's going to cause you even more problems. Add to that uneven pad wear and the whole thing stops being a worthwhile mod. Let us know what the supplier says.

[Bengie]

I think it's only really a problem with Grooved discs. Even then it's not a balance issue, it's just that if you get the groves pointing the wrong way, it's noiser, and can wear the pads more quickly. I'd guess that if there are the same number of holes in the pad area, then it won't make any difference. Then, of course, what do I know

[Steve Crisp]

Hi Ricky, I'd say that it wasn't a problem. Grooves is one thing, but with holes I can't see that there is any mechanical difference. As the disk is rotating, then the only thing to matter would be the number of holes at each radius about the centre. Their positioning would be immaterial? Best to ask though if you can! Steve

[SSH1]

Talking of grooved disks, which way should they go? I have just ordered some for my other car. Regards Chris

[Bengie]

The grooves should be as per Ricky2772's picture... eg: If a groove starts in the middle at top centre, it should point towards the back of the car.

[SSH1]

Thanks Bengie Chris

[Marco Polo]

A while ago, I bougth Drilled Discs (Zimmerman) for my MX-5, they were identical (i.e. like Ricky ones at the moment, one side with holes going "backward" and one side with holes going "forward")

Later I bought Grooved/Drilled Discs, they were symetrical (gooves and holes having a patern going "backward" on both side)...

Here is a High Tech Lotus Elise Disc :




Hera are the first discs I put : Braking Disc




And here a full set of different discs for a MX-5 (NA 1.8L Std / NA 1.6L Std / NA 1.6L Zimmerman / NA 1.6L MPCA High Perf) :

Edited by Marco Polo, 25 July 2003 - 06:38 PM.

[Marco Polo]

BUT...

As for the Zimmerman, after 4 track days (on a 8 month period) :

[Ricky2772]

interesting! do you know if zimmerman apply the heat-treatment to its discs? I only bought a couple for such reason....if they crack, it will be only 130€.....

[Ricky2772]

installed discs and lines....(with old pads, still adapting a bit...)

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[Ricky2772]

once the lines were installed, a lot of bleeding was needed...probably more in the next day or so.... will wait to judge the diff. once the pads are beaded in.... installing the brake lines is pretty straightforward, but require some thinking on what to do and in which order... like what line-end disconnect first..... front lines anre more of a bitch, rx front requires the wheelarch removal, while left front is a pain due to the tight quarters at the abs attachment.... use gloves!!

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[Ricky2772]

while installing the front lines and discs, I also removed the last out of 4 camber shims (being held in my fingers), that was holding the abs sensor....I then secured it with a fastener . now the camber is at a maximum, providing a better tyre contact when cornering hard (less shoulder wear). will wear more inner shoulder if the car is driven on a straight line .

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Edited by Ricky2772, 28 July 2003 - 10:46 AM.