scootz
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| posted on 11/11/09 at 06:32 PM |
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Disc Thickness
What's the general wisdom regarding the optimum disc width for 7-style cars???
It's Evolution Baby!
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flak monkey
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| posted on 11/11/09 at 06:34 PM |
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10mm solid - supplied with the Wilwood kits.
IMHO of course
For comparison std cortina are 12mm solid and sierra venteds are 25mm
Sera
http://www.motosera.com
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scootz
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| posted on 11/11/09 at 06:38 PM |
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That was my thought too.
Was discussing brakes with a mate and he was of the opinion that 10mm was far too thin.
It's Evolution Baby!
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blakep82
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| posted on 11/11/09 at 06:46 PM |
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think 10mm is the minimum thickness they're allowed to start a race with on the race pickup trucks
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Steve G
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| posted on 11/11/09 at 07:09 PM |
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9-10mm - and vented disks are pointless on a 500 - 600kg se7en imho. In fact i'd say other than the weight penalty of a vented disk - the
ability to cool quicker is a huge disadvantage on a lightweight car
[Edited on 11/11/09 by Steve G]
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speedyxjs
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| posted on 11/11/09 at 07:35 PM |
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Dont know the thickness but Jag units on mine 
Should stop pretty quick 
How long can i resist the temptation to drop a V8 in?
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SPYDER
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| posted on 11/11/09 at 08:38 PM |
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You don't often see vented discs on RGB race cars. Hardly ever, in fact. 10mm solids should be plenty good enough.
On the rears I've seen them turned down to 8mm.
Geoff.
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mcerd1
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| posted on 11/11/09 at 08:52 PM |
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quote:
Originally posted by scootz
That was my thought too.
Was discussing brakes with a mate and he was of the opinion that 10mm was far too thin.
well my old 106 weighed in at hefty 760kg and I think it had 9mm thick discs
then again they wern't very big or effective - but still more effectice than the 145 tyres they were stopping
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tomblyth
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| posted on 11/11/09 at 08:57 PM |
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my hi spec's have 9mm disk! link
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iank
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| posted on 11/11/09 at 09:16 PM |
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quote:
Originally posted by scootz
That was my thought too.
Was discussing brakes with a mate and he was of the opinion that 10mm was far too thin.
Too thin for what? perfect for stopping a car 2/3 the weight of a late model classic mini IMO, no good at all for stopping a 2 tonne tin-top.
For reference the mini se7ens racers (650kg minimum weight) use 7.5" disc brakes that start off at 8.5mm (iirc) and manage to pretty much stand
the car on it's nose when they poke the stop pedal hard.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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Steve G
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| posted on 11/11/09 at 11:01 PM |
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The thickness of the disk has absolutely no bearing on its ability to stop the car in normal conditions. The thinner disk will however warm up quicker
which can be good (or bad if it overheats). So 10mm thick disk great on a se7en but could soon overheat and give brake fade on a 2 ton tintop -
probably warp pretty quick too.
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britishtrident
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| posted on 13/11/09 at 10:04 PM |
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Thinner discs are much more likely warp --- warping occurs if the brakes get too hot and are not allowed to cool before the car stops. So how
likely the discs are to warp also depends how hot the brakes get.
The sure way to warp brakes is to over heat them hold the car stationary on the foot brake while the brakes are still stinking hot.
[Edited on 13/11/09 by britishtrident]
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― From BBC TV/Amazon's Ripper Street.
[/I]
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