The Youth.

iTrader: (1)

surely this is an accident waiting to happen!!

http://cgi.ebay.co.uk/GROOVED-LIGHTE...QQcmdZViewItem

steve

xrsi

iTrader: (1)

as long as there has been suitable stress analysis in the structure and has been tested for fatigue then it will be safe, loads of fly wheels have portions removed (although not as extreme as the disk in that auction).

Interestingly overall stress can actually be reduced by removing parts of a structure, providing they are the correct parts, and by curving corners of voids the stress concentration can also be reduced.

I doubt very much tho that the appropriate testing has gone into those disks as the lightening looks far too extreme for my liking.

richard_syko

Maybe okay on a kit car but, is it really worth saving grams on brakes of all parts.

rst in breaking

iTrader: (2)

i seel my brakes as my life and others, got to be done properly, id rather save lifes than weight

wirralphil

for some reason the actual ring part off the disc looks too thin, maybe a 6mm wall thickness on them (thinnest part any way) the holes are just asken for the disc to explode/part company with the bore part tho.

as some people say the only thing between you and the road is your tyres.

well for this instance the only thing stopping you and the wall/car/hedge/kid on bike/bus etc colliding(sp) is your brakes.

MK5RST

Thats nothing...... THIS is DANGEROUS.............................

RWD_cossie_wil

iTrader: (9)

Hmmmm..... If you look at where the stresses will be on the discs, there is still a fair bit of meat around the studs, but I doubt very much wether they have been professionally tested for stress/fatigue etc. Reducing unsprung weight is a huge step to making a car handle better, every 1kg of unsprung weight is equivilant to saving 20kgs of sprung weight according to most tech articles I have read. Still wouldn't fancy running them on my car though, don't think the insurance companys would be too happy either

tabetha

There is absolutely no corrrelation between unsprung weight being or having an equivalent.
It depends on so many factors like, weight of component weight of car, and most importantly SPEED the component is rotating at, in the case here.
I would not do it on a road car, which weighs a lot more, than the kits they are intended for, and therefore generate a lot more heat.
tabetha

dojj

iTrader: (3)

the hoels they've made in the sides are fairly common on production cars, audi's for example have them

the holes i the top thought wold concern me a little more as it seems ther is just a bit oo much meat missing from the disc to make it stable through it's heating range without it warping

tabetha is correct when he mentions that it's for a kit car so won't have to lsow down as much, but if it does all go wrong it's still a kit car which someones spannered together in ther garage and it won't have as much protection if it's gone into a brick wall faster than the driver wasn't expecting it to go into

AndyRST

Besides from that did any one notice the company seeling them on Ebay was called "AB Performance" and their logo is a rip off of AP Performance logo!

tabetha

I don't know the firm but are near me so going to try and have a nosey!!
tabetha