Here is my BBK !

 

Parts

 

Mitsubishi evo 5/9 Brembo calipers

Mitsubishi evo 5/9 brake lines

Mitsubishi evo 10 rotors 350x32mm

Adapters

 

The evo brembos are one of the best brakes available

 

They are 1.5kg lighter than the stock Z32 iron calipers and they are huge! pistons size is 2x40mm 2x46mm

The Z32 master cylinder is the same size of the evos so they are perfect to run these babys

 

If you want to keep low weight, you can purchase the 2pc Giro discs, they weight the same stock 280x30mm Z32 about 7.5kg, but since the calipers wieght less, you have bigger brakes and low weight!

 

Here is my set

 

 

Missing the rotors, they arrive next week (GiroDics 2pc rotors) :)

i have a pair of these ready to go on i just need to get some adaptors making up, not to keen on the ones pictured ad i think they look a little feeble,

i have a pair of these ready to go on i just need to get some adaptors making up, not to keen on the ones pictured ad i think they look a little feeble,

 

They are made in 7075 grade of alloy ;)

its the fact half the damn thread is machine out that hes not happy with, I expressed the same concern. much better to take a little off the caliper.

its the fact half the damn thread is machine out that hes not happy with, I expressed the same concern. much better to take a little off the caliper.

 

This is billet aerospace quality 7075-T6 material and track tested since 2011 :)

This is billet aerospace quality 7075-T6 material and track tested since 2011 :)

Did you purchase them or get them made?

Im planning on getting mine done in steel, and put a little more meat around the edges.

Did you purchase them or get them made?

Im planning on getting mine done in steel, and put a little more meat around the edges.

 

:biggrin:

Did you purchase them or get them made?

Im planning on getting mine done in steel, and put a little more meat around the edges.

 

I purchase mine for australia

 

http://www.ao-ps.com/brakes.php

 

7075-T6 material is also lighter and stroger than most of the steels

7075 T6 is the perfect material for the job, it's mechanical properties are spot on but it's very costly!

the brackets look fine to me...the forces applied from the caliper are longitudal and no worse than the 2 lugs on a Nissan caliper imho.

Just because they are made of 7075 doesnt mean they are well engineeered.

 

TBH there is not enough meat around all the mounting points for my liking. Minimum edge distance i would like is 2 x the diameter of the bolt

Just because they are made of 7075 doesnt mean they are well engineeered.

 

TBH there is not enough meat around all the mounting points for my liking. Minimum edge distance i would like is 2 x the diameter of the bolt

 

This is true, I wonder what R&D is done before selling these? 2D would be the ideal edge distance but maybe not required based on the load paths that znut mentioned.

its exactly those forces im worried about, plus the amount of thread engagement doesnt exactly inspire confidence.

I would like some Destructive testing done on these to see what loads they can take, brakes are not something i would like to take a chance on.

Dont get me wrong im all for adapting things to fit, those brackets are just a little on the soft side for my tastes.

it is normal to worry, and is a good thing

 

In the EUA some guys use theses to use the evo 5/9 320x32mm, they are made in steel

 

 

this ones are the most used in the US, these ones and made from weak material and design compare to the 7075-T6, notice the bolts are 8.8 grade, my ones came whit 12.9 grade.

Those are death waiting to happen, whoever designed them should be ashamed.

Please stop banging on about the 7075. Im an aeronautical engineer to trade and have worked with everything from 2024 to 7075 to titanium.

Its a good alloy, but its not indestructible and a medium carbon steel has a higher tensile strength than 7075 and the weight is difference is minimal for a bracket that size

Those are death waiting to happen, whoever designed them should be ashamed.

Please stop banging on about the 7075. Im an aeronautical engineer to trade and have worked with everything from 2024 to 7075 to titanium.

Its a good alloy, but its not indestructible and a medium carbon steel has a higher tensile strength than 7075 and the weight is difference is minimal for a bracket that size

 

 

Cool, im mecanical engineer.. and the forces aplied is longitudal just like the znut said...

 

Carbon steel - > 380 to 440 Tensile Strength: Ultimate (MPa)

Carbon steel - >205 to 370 Tensile Strength: Yield (Proof) (MPa)

 

7075-T6 - > 572 Tensile Strength: Ultimate (MPa)

7075-T6 - > 505 Tensile Strength: Yield (Proof) (MPa)

 

 

If you dont like it you can design better ones :thumbup1:

Im an aeronautical engineer to trade and have worked with everything from 2024 to 7075 to titanium.

 

Where you working nowadays? I see you were connying at Westlands in '09, are you still on the circuit? I take it you're a sheety?

thats low carbon steel, which is pretty much everyday crap. There are hundreds of permutations and alloy steels. most medium carbon steels have a tensile strength of around 95k psi, 7075 t6 has around 75k psi.

 

JoelyP im off work just now, broke my hand and damaged nerves and waiting on surgery.

But after Wetlands ( not a sp error ;)) ive worked for GKN at filton 3 times, GKN at western approach, ryanair at prestwick, British Airways at prestwick, Airframe Components prestwick.and went to do a start at chester but the company moved the goalposts with workhours and overtime so left after a week.

BTW i could design better ones, but ive no cash spare to buy the stuff needed.

This is 1018 steel.. is medium steel just like you said

 

Tensile Strength: 58 to 63 psi

Tensile Strength: Yield (Proof) 31 to 53 psi

 

7075-T6

 

Tensile Strength: 82.9 psi

Tensile Strength: Yield (Proof) 73.2 psi

 

 

the 1040 steel is the one that almost have the same strength of the 7076-T6

 

All steel above 1040 have more strength

 

Titanium is almost 2x strong the 7075-T6 , so making ones in titanium sound good ideia.. but titanium is a PITA to work :thumbup1:

i agreed whit you about the design of the 320x32mm adapters

 

But the fact they are using that design since 2008 i think and did not read any issues about it, (unless someone died and can post it lol )

(unless someone died and can post it lol )

 

Haha :rofl:

 

Lads stop playing brake caliber bracket material trumps!

Haha :rofl:

 

Lads stop playing brake caliber bracket material trumps!

I cannot source 7075-t6 I can however source most steels. I cannot afford to pay 350 aus $ for ready made items too, and if I'm getting them made I can specify how I want them :-)

i may have some 12mm x 60mm 7075 down the unit, il check tomorrow for you and if i have you can have it mate

I cannot source 7075-t6 I can however source most steels. I cannot afford to pay 350 aus $ for ready made items too, and if I'm getting them made I can specify how I want them :-)

 

That why i had to purchase them from australia, in portugal 7075-T6 is hard to find, and make them done in CNC too... it cost me 350 plus shipping 40 AUD.. :(

That why i had to purchase them from australia, in portugal 7075-T6 is hard to find, and make them done in CNC too... it cost me 350 plus shipping 40 AUD.. :(

 

ive just bought a shoe box full of old files from a car boot sale..send me a block of this iron and ile knock you a pair up faster than it takes to say dirty bastted file:biggrin: