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Old 15-02-2011, 12:02 AM   #111
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Originally Posted by funtime View Post
As already stated on this thread though - are the Alcon calipers not exactly the same as used on loads of different car's - evo's, jag's etc?

So how are they 'a properly designed BBK' designed specificly for the M3?

Or are the master cylinders, weights and brake bias' of all the car's the Alcon calipers are found on exactly the same?

For this reason alone, how are they any better than using the Brembo's from a Porsche with mounting brackets and disc's to match?

Fair enough if someone can give a proper technical explanation as to how they are 'designed' specifically for the M3 or CSL, but so far these 'proper BBK's' are just another big calliper and a means of bolting it to the M3 hub?

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Old 15-02-2011, 12:02 AM   #112
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Quote:
Originally Posted by funtime View Post
As already stated on this thread though - are the Alcon calipers not exactly the same as used on loads of different car's - evo's, jag's etc?

So how are they 'a properly designed BBK' designed specificly for the M3?

Or are the master cylinders, weights and brake bias' of all the car's the Alcon calipers are found on exactly the same?

For this reason alone, how are they any better than using the Brembo's from a Porsche with mounting brackets and disc's to match?

Fair enough if someone can give a proper technical explanation as to how they are 'designed' specifically for the M3 or CSL, but so far these 'proper BBK's' are just another big calliper and a means of bolting it to the M3 hub?

James
The pretty Brembo, Alcon, AP calipers might all look the same but there are many variations of each caliper.

People seem to think a bbk is just any old caliper mounted to a bracket which aligns with the disc and Bobs your Uncle. I'm afraid it's definitely not the case.

A proper bbk is designed using a caliper with the correct radius for the disc used.

The disc should have the correct sized face to match the caliper and pad as well as the disc thickness.

The piston area should be roughly the same as the oem caliper to keep bias correct.

Alloy brackets on the fronts should ideally have steel threaded inserts and be hard anodized. Studs etc must be high tensile.

If you think you can go on ebay and make up a bbk that's as well thought out as a pukka jobbie, then go ahead. I just wouldn't do it myself and I wouldn't buy a car that had one.

Glwtbbk
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Old 15-02-2011, 12:10 AM   #113
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Quote:
Originally Posted by Foamy View Post
The pretty Brembo, Alcon, AP calipers might all look the same but there are many variations of each caliper.

People seem to think a bbk is just any old caliper mounted to a bracket which aligns with the disc and Bobs your Uncle. I'm afraid it's definitely not the case.

A proper bbk is designed using a caliper with the correct radius for the disc used.

The disc should have the correct sized face to match the caliper and pad as well as the disc thickness.

The piston area should be roughly the same as the oem caliper to keep bias correct.

Alloy brackets on the fronts should ideally have steel threaded inserts and be hard anodized. Studs etc must be high tensile.

If you think you can go on ebay and make up a bbk that's as well thought out as a pukka jobbie, then go ahead. I just wouldn't do it myself and I wouldn't buy a car that had one.

Glwtbbk
What a load of bollocks

AP calipers are the same size, same disc size, same pad shape on many different style cars, many different weight cars.
The kits are identical, bar mounting brackets and hoses- car specific.

How much would it cost to test every different car/model and then slightly change design for each model? mega bucks.


Do you really think they will produce 1000's of different sized pistons or a few?


Just my view.
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Old 15-02-2011, 12:16 AM   #114
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Originally Posted by lawsy View Post
What a load of bollocks

AP calipers are the same size, same disc size, same pad shape on many different style cars, many different weight cars.
The kits are identical, bar mounting brackets and hoses- car specific.

How much would it cost to test every different car/model and then slightly change design for each model? mega bucks.


Do you really think they will produce 1000's of different sized pistons or a few?


Just my view.

Yes, not 1000's but a few
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Old 15-02-2011, 12:34 AM   #115
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Quote:
Originally Posted by Foamy View Post
...

Alloy brackets on the fronts should ideally have steel threaded inserts and be hard anodized. Studs etc must be high tensile.
Brackets CNCed out of one solid piece of high tensile steel are the only way to make decent & reliable BBK conversion brackets
Anything else and you might as well be making them out of cheese I hear Edam is quite good
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Old 15-02-2011, 08:15 AM   #116
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Poor old Colin Chapman would turn in his grave if he read this.
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Old 15-02-2011, 08:30 AM   #117
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I like to think he'd thought ahead and would be spinning in his grave using lightweight bearings installed in his fibreglass coffin.
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Old 15-02-2011, 08:39 AM   #118
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I like to think he'd thought ahead and would be spinning in his grave using lightweight bearings installed in his fibreglass coffin.
Lol
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Old 15-02-2011, 11:11 AM   #119
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Who's Colin Chapman?
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Old 15-02-2011, 11:23 AM   #120
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Who's Colin Chapman?

Charlie's brother
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