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Old 10-07-2007, 07:22   #1
Tim.
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Big Rear Brakes

Vehicle Handling Solutions have just released their 266mm rear disk mod. Its been in development for a while but I believe they had problems sourcing the disks. It uses the existing calliper with a new disk and calliper support bracket.
At Castle Coombe, Dave was sporting the first set out of their workshops. Haven't spoken to him to find how he felt about them by the end of the track day but the big disks at the back sure looked good
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Old 10-07-2007, 07:54   #2
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First impressions are good Tim, I spoke to Dave about them after and he said he certainly noticed the difference..

For general road use its probably not worth it as you really won't see the benefit but for extreme track use, its now on my to do list.

Stu

PS Cracking day yesterday, I've even got a little sunburnt
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Old 10-07-2007, 11:14   #3
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Any ideas of costs?

Is it just a caliper/carrier/disc upgrade - or more substantial?

Thanks
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Old 10-07-2007, 11:17   #4
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how hard are the disks to source i.e. are they a standard fit to car x or are they custom size. If custom replacing them could become expensive...
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Old 10-07-2007, 11:20   #5
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Not cheap but how many of theses limited volume mods are.

Quote:
NEW for 2007 - our MGF and MGTF big rear brake kit provides a pair of 266mm discs, brackets and fixings to allow the use of your standard calipers, thereby retaining the handbrake. Greater performance and better thermal capacity with style! Complete kit 340+VAT (Replacement discs 80+VAT/pair)
Yes, just a disk and carrier upgrade allowing the pads to work at a larger radius for more torque and better cooling.
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Old 10-07-2007, 11:36   #6
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you'r not kidding thats a 260 pound bracket and fixing!! but i'd still do it...
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Old 10-07-2007, 11:51   #7
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Originally Posted by TF160SA View Post
you'r not kidding thats a 260 pound bracket and fixing!! but i'd still do it...
LOL, yes a 260 bracket if you look at it that way - well actually two 130 brackets I suppose

Correct the disks are single source. I suppose, in a way, its good of them to have apparently put the development cost onto the one off purchase bracket rather than load the replacement disks.
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Old 10-07-2007, 12:27   #8
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I wonder how this will affect the ABS?
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Old 10-07-2007, 12:33   #9
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It shouldn't affect the ABS, there are sensors on all 4 wheels.

As the rear brakes are the same irrispective of front brake setup. Seems a logical plan for those with APs and grooved front disks to restore a bit of the originally designed balance.

TBH most of the braking effort is from the front wheels anyway because of the weight shift.
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Old 10-07-2007, 19:25   #10
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Will it not affect brake bias at all? I always understood big rear brakes to be a no-no for this reason
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Old 10-07-2007, 20:07   #11
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Yep. Definately agee you don't wanna be putting these on your rears with standard fronts..

Just to make that clear..... that is NOT a good idea!
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Old 10-07-2007, 21:08   #12
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Yep. Definately agee you don't wanna be putting these on your rears with standard fronts..

Just to make that clear..... that is NOT a good idea!
Yes, indeed, thanks for spelling that out. Maybe my post didn't emphasize that enough. Even then it will affect any trail braking you might want to be doing.
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Old 10-07-2007, 21:15   #13
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You'd have to be a bit daft to upgrade the rears before the fronts though anyway
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