After having a few arguments with people on another forum I thought I would get the (better informed) opinion from you lot...

so what do you think of these discs and the claims made about them ?

Here

Bit of a gimmick - would be right about weight and negative effects of it - coating would burn off on friction faces but definately help protect it everywhere else. As long as they are not above £100/pair I'd go for it.

Bikes have had wavey discs for a couple of years now, cosmetic gimmick.

The furtest edge of the disc has most leverage for stopping making this wavey must cost in stopping power if the pads are bite to the edge. If they do not bite here you may as well machine that bit off and save the reciprocating weight, again further from the centre the worse it is. You do not lighten a flywheel in the middle.

As for the other bit yould could just buy some ordinary discs and anodise yourself, plenty of how to do this on the intenet.

Sounds expensive, I,m getting some vented 260mm discs for £35 each.

How much?

I know the great unwashed here will see them for what they are, but the Layman will love them.

Personally think they look cool, but would never bother with vented disks on another Locost/7.

TC

here we go on the snake oil again.

Customer - "The disks don't make any difference in terms of performance"

Maker - "yes they do, proev that they don't"

Customer - "the moon is made of cheese"

Maker - " no it's not"

Customer "prove it then"

la de da.

Fit some normal discs made of cast iron and they'll stop the car. If they don't fit ones with bigger diameters.

come to that, fit what you like, but I know what I'm doing.

How about F1 car test - if wavey discs made any difference those guys WOULD be using them (well making their own out of carbon fibre anyway ).

(yes I know it's a simplification, but I don't think they are banned by the rule book)

more or less my thoughts exactly. I thought that as replacement discs on standard cars the pads would partialy be pressing against nothing because of the steps around the edge.
and would therefore probably be less efficient and could even possibly chip the pads.

I also took issue with the claim of increased friction. How can that be when there is less metal contact with the pad ?

IIRC on bikes the wavey bit helps stop the pads glazing over however it does increase pad wear, its also supposed to be better in the wet as it clears water from the pads(?!)

However you don't see the MotoGP boys with wavey disks, but you do in Superbikes which is production based and a good looking road based race bike with trick bits will usually inspire the punters.

BTW for my RC they would be £170 + VAT !!

These days fancy brakes are the motoring equivalent of quasi medical products with names based on a misspelling of Viagra.

Like the Peco exhaust boosters that were bought back in the 1960s by the owners of Triumph Heralds and Ford Anglias it is all about the buyers ego or rather lack of.




[Edited on 15/9/05 by britishtrident]

Don't think I will be wasting my money on a set ! Some back to back tests would perhaps be interesting?

Another marketing gimic aimed at the boy racers in their Saxo's etc.
Will soon be on sale in the high street rip off shops no doubt.
Don't waste your money
IMHO.

Hi Dave

Have you seen the disks TADLTD do?

http://www.locostbuilders.co.uk/viewthread.php?tid=30036

Not bought any myself, but his advert backs up what other disk makers have said

Adrian

quote:

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Originally posted by mark chandler
Bikes have had wavey discs for a couple of years now, cosmetic gimmick.

The furtest edge of the disc has most leverage for stopping making this wavey must cost in stopping power if the pads are bite to the edge. If they do not bite here you may as well machine that bit off and save the reciprocating weight, again further from the centre the worse it is. You do not lighten a flywheel in the middle.

As for the other bit yould could just buy some ordinary discs and anodise yourself, plenty of how to do this on the intenet.

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