Its come to light this evening that some types of caliper mounting brackets could be unsafe! the ones in question are the same as attached to my TT and if the majority of the votes say they are NOT safe i will be removing them!!

 

I purchsed the Evo brembo calipers, discs and mounting brackets 3rd hand from a member and had no worries when attaching them to my car, I did ask for a 2nd opinion from my mate in the fabrication trade to see if the were ok, we both said as the bolt is going right through the bracket and into the caliper it could never come off even in the unlikley event of the weld breaking!

 

Please dont think i am trying to defend my self, i need to know if they are safe for me also.

 

I am happy with mine at the moment and i know that a lot of people have these type of brackets attached so can we have a discussion on your views please.

 

Its weird that no one mentioned when I had fitted these brackets they could be unsafe, they left it till I had them for sale?????

 

here are the brackets below and the way they are attached

 

[/img]

Edited March 30, 201015 yr by daZvert

 

Yes they are upside down, they have now been altered :whistling:

Edited March 30, 201015 yr by daZvert

Really it is yourself and the engineer who need to ensure this, if there is any accident then there is a possibility you guys could up in the dock!

Really it is yourself and the engineer who need to ensure this, if there is any accident then there is a possibility you guys could up in the dock!

 

Thats not the question I am asking, I am asking do you think they are safe? I have sold 1 set of these and have offered to refund his money if we think they are unsafe

The only person who can answer if they are safe is the engineer who constructed them????

The only person who can answer if they are safe is the engineer who constructed them????

 

I dont know who fabricated the ones attached to my car, thats why I`m worried now

Edited March 30, 201015 yr by daZvert

The only thing I will say is that you could use 10.9 bolts instead of 8.8.

 

Paul

You know the engineer who is making the ones you have for sale, if he is willing to make his name and address available to forum admin in case of issues then I think that would reassure people.

 

I think it would be difficult to get an informed opinion on a forum about a piece of engineering, unless you have some guarantee about the materials involved and the quality of the welds.

The only thing I will say is that you could use 10.9 bolts instead of 8.8.

 

Paul

 

Cheers Paul, thanks for your input :wink:

You know the engineer who is making the ones you have for sale, if he is willing to make his name and address available to forum admin in case of issues then I think that would reassure people.

 

I think it would be difficult to get an informed opinion on a forum about a piece of engineering, unless you have some guarantee about the materials involved and the quality of the welds.

 

Good point, I`m not really trying to reassue people to buy a bracket i have just copied from someone else, I am trying to discover if the whole concept of the bracket and mounting positions are under that much force that something could give way.

personally unless they have been tested then i wouldnt offer them to anymore members, they may be ok, im not an engineer, but to be on the safe side and maybe to keep yourself out of trouble then i would deffo not offer to anyone

 

i know of a caliper that was ripped off its mount (rear caliper on a 300zx) and shoot through the rear wheel at a very high speed

 

just be carefull mate

depending on the materials used and the quality of welds. tbh from the pics they "look fine" as most caliper relocation brackets are made from aluminium in varying grades from 6061 t6 (personally wouldnt use 6061 t6) up to 7075 t6 aluminium which i would say is more then adiquate for the job.

 

they are steel and the welds look like good tig welds.

 

just to cover my own back im not endorsing the sale of these brackets. if i make somthing for my own car and it breaks im responsible for it, if i make something for somebody else im still responsible unless specified "not for road use" thats how most aftermarket parts are sold across the world to cover any event on the road which a non standard part was to blame or partly to blame for the accident...

 

also no im not making any:tt2:

Edited March 30, 201015 yr by hellraiser

personally unless they have been tested then i wouldnt offer them to anymore members, they may be ok, im not an engineer, but to be on the safe side and maybe to keep yourself out of trouble then i would deffo not offer to anyone

 

i know of a caliper that was ripped off its mount (rear caliper on a 300zx) and shoot through the rear wheel at a very high speed

 

just be carefull mate

 

Chers mate, at the moment they are not for sale, How could we test them?

I was hoping for more of a technical responce from peeps like how they could break/ fall off/ be tested? I am worried myself and wont use my car until we think they are safe :cool3:

depending on the materials used and the quality of welds. tbh from the pics they "look fine" as most caliper relocation brackets are made from aluminium in varying grades from 6061 t6 (personally wouldnt use 6061 t6) up to 7075 t6 aluminium which i would say is more then adiquate for the job.

 

they are steel and the welds look like good tig welds.

 

just to cover my own back im not endorsing the sale of these brackets. if i make somthing for my own car and it breaks im responsible for it, if i make something for somebody else im still responsible unless specified "not for road use" thats how most aftermarket parts are sold across the world to cover any event on the road which a non standard part was to blame or partly to blame for the accident...

 

also no im not making any:tt2:

 

Top words Mate :flowers:

k sport use carbon steel relocation brackets but dont have any pics, also doesnt give a specification to carbon steel could be anything LOL

Another question, ? would it be a better job if the calipers themselves had an extension piece welded on to it rather than a bracket? just a thought :turned:

k sport use carbon steel relocation brackets but dont have any pics, also doesnt give a specification to carbon steel could be anything LOL

 

i would imagine they dont give out specifics for a reason (so they cant be copied)

 

i wouldnt know how to test them to be honest but if they are to be sold i would imagine (due to the legal possibilities) they would need vigoruos testing

 

building a caliper bracket for yourself to use should be fine, it will prob hold ok, but to offer them to public then its a whole different kettle of fish

 

not trying to knock what you have done for the club, its a great thing, just trying to say what could happen if the worse happens

 

how about just offering the club the dimensions of the bracketso they could have their own made???

heres some technical info for you

 

http://www.stoptech.com/tech_info/PedalSetup-DualMaster-Guide.pdf

 

and quite an interesting read

 

http://www.carbibles.com/brake_bible.html

Edited March 30, 201015 yr by hellraiser

i would imagine they dont give out specifics for a reason (so they cant be copied)

 

i wouldnt know how to test them to be honest but if they are to be sold i would imagine (due to the legal possibilities) they would need vigoruos testing

 

building a caliper bracket for yourself to use should be fine, it will prob hold ok, but to offer them to public then its a whole different kettle of fish

 

not trying to knock what you have done for the club, its a great thing, just trying to say what could happen if the worse happens

 

how about just offering the club the dimensions of the bracketso they could have their own made???

 

 

Yeh top words too Stellaz, the dimentions are on the forum for anyone to copy.

I wonder if anything did happen that our insurance could be invalid?

I know you are not trying to knock me bud, I am just too honest and helpfull for my own good sometimes, Its actually cost me money and time to organise these brackets only to be shot down in flames :hang:

last one :) probably the most relevent

 

http://www.wrc-cosworth.org/tech/brakes/brakecalculation.html

nah, not shot down bud, you did a good thing for the club out of your own kindness

 

unfortunately in this no win no fee society we live in, if the worse should happen then i would imagine you would be hung drawn and qautered

Unless you know someone who can test the tensile strength of the metal, there really is no way of telling how well they are made. you might find the weld is the strongest part, but then you might find that they will break or snap the moment any serious use is applied.

 

To say they look fine isn't really a cause for reassurance, after all everyone said the titanic looked fine and look what happened to that lol

 

Only true way is to get the metal tested, but then you will be down one bracket as they will test it to destruction, to see what the stress threshold is.

last one :) probably the most relevent

 

http://www.wrc-cosworth.org/tech/brakes/brakecalculation.html

 

Interesting read, we learn something every day, Thanks :thumbup1:

Unless you know someone who can test the tensile strength of the metal, there really is no way of telling how well they are made. you might find the weld is the strongest part, but then you might find that they will break or snap the moment any serious use is applied.

 

To say they look fine isn't really a cause for reassurance, after all everyone said the titanic looked fine and look what happened to that lol

 

Only true way is to get the metal tested, but then you will be down one bracket as they will test it to destruction, to see what the stress threshold is.

 

exactly true. :thumbup1:

This is what you call a caliper bracket, No welds here :D milled from scratch. Cost a pritty penny. £300 No chance in bending these puppies. The 90degree angle gives them super strength along with the thickness.

 

This is what you call a caliper bracket, No welds here :D milled from scratch. Cost a pritty penny. £300 No chance in bending these puppies. The 90degree angle gives them super strength along with the thickness.

 

 

do you know what steel they were made from jimmy?

 

 

they saw you coming...................!

 

but i suppose 300 is a good price to pay for public liability insurance ;)