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Thread: Brake Discs & Pads.

  1. #11
    Senior Member SpikyBob's Avatar
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    Brian - are you still interested in this brake disc business? I know your last post was in July......
    If so I couldn't help noticing your photos - the one with the radial marks. They roughly correlate to the size and position of pad contact if you look carefully.
    This would tie in with warpage at each end of the pad when stationary. I was once told that if you brake hard and keep the braking pressure on when halted, the section of disc between the pads cools slower than the "unclamped" free to air part, thus increasing the likelihood of disc warp. As I'm a bit o.c.d., when I'm forced to brake hard to an obstruction etc I gently roll forward after stopping to allow the disc to cool evenly. I had an Audi turbo that would warp discs for fun until I adopted this principle. In fact I had a goon pull in front of me at 70 on the motorway home from having new discs fitted and warped those too before I knew!
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  2. #12
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    Hi SpikeyBob,

    I'm of advancing years, from a time where brakes were good at best and where kadence braking was second nature. Like you I brake gently and in good time when conditions allow.

    Unfortunately, cars previous owner - I won't mention gender - did not appear to have the same forethought and there's no accounting for goons.

    My other mode of transport is a narrow boat, weighs 15 tons and 50 foot long, with rubbish steering and no brakes ... good training ground in anticipation .
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  3. #13
    Senior Member SpikyBob's Avatar
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    Quote Originally Posted by Brian7NS View Post
    Hi SpikeyBob, I'm of advancing years, from a time where brakes were good at best and where kadence braking was second nature. Like you I brake gently and in good time when conditions allow. Unfortunately, cars previous owner - I won't mention gender - did not appear to have the same forethought and there's no accounting for goons. My other mode of transport is a narrow boat, weighs 15 tons and 50 foot long, with rubbish steering and no brakes ... good training ground in anticipation .
    hehe Brian agree with all that! I'm thinking you may mean progressive braking where you gradually reduce pressure as you come to a halt, cadence braking from memory, is the emergency braking when you pump the pedal rapidly letting go just as the wheels are about to lock!! You are also correct to suggest that these techniques do not seem to be taught any longer and folk rely on the abs system to save their bacon. I remember the popularity of the oval car stickers way back with "DISCS" in red to warn other drivers in their lowly drum braked vehicles, of their superior stopping power! Presumably to avoid rear end shunts and in a similar fashion it was popular to place "baby on board" signs in the rear window. I was never sure if the latter was there to make drivers especially careful not hit their car and find another to hit, or to excuse the poor concentration of a tired parent keeping one eye on a screaming child.....
    As a parent of course I can see all these possibilities from my own experience and hope I have not upset any new parents and drivers of all drum braked vehicles reading this.-Aah yes! The British Leyland Mini - skinny tyres and tiny drums - those were the days!
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  4. #14
    Administrator Crasher's Avatar
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    Quote Originally Posted by SpikyBob View Post
    I'm thinking you may mean progressive braking where you gradually reduce pressure as you come to a halt, cadence braking from memory, is the emergency braking when you pump the pedal rapidly letting go just as the wheels are about to lock!
    It's called Cadaver braking when you get it wrong........
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