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Thread: 4WD fail

  1. #21
    Join Date
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    A disc brake type park brake can not hold as well as a drum it's as simple as that they don't have even close to the same surface area to begin with.
    So why did disc brakes supersede drum brakes for the purpose of stopping a vehicle? All things equal if stopping power is simply down to contact area then drums should out perform disks every time shouldn't they? Or am I missing something?

    Ian.
    Last edited by mools; 28th February 2013 at 09:58 PM. Reason: Poor spelling

  2. #22
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    Quote Originally Posted by Yorkshire_Jon View Post
    The issue here is reliability. Yes, the standard handbrake is capable of holding a vehicle, just not a fully laiden one on a steep incline...

    I've been dicking around with these things for close to 20years, they will do the job when you go to park up in Woolies car park, but do not cut the mustard when your out and about. They cake up with mud, they regularly need adjusting and even then they can't lock the thing up solid in conditions as noted above.

    No, the standard LR drum brake is nowhere near as capable of a disc handbrake. To make that comment is senseless and shows inexperience. Sorry, it just is/does.

    Jon

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    Quote Originally Posted by 460cixy View Post
    A disc brake type park brake can not hold as well as a drum it's as simple as that they don't have even close to the same surface area to begin with. As for mud and crap getting in there. Yes they do need maintaining but so does everything else on the vehicle it's not a set and forget device
    I know Si/X-Eng's disc handbrake is really popular on lr4x4 and i understand why, but we don't have the perpetual gloop/mud problems (sorry Northern NSW/Qld ) that the UK does, and as 460 quoted, the beauty of a drum brake is that it's self energising, discs aren't, so you need more mechanical advantage for the same applied with force with a disc.

    There was a run on X-Eng handbrakes here on AULRO a few years back, but I think a few of the fella's found their limitations.

    Me, I'm happy with a drum handbrake for the reasons above.

  3. #23
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    Are the park brakes supposed to work? That's a new one.
    I just nose up to a solid tree. The thin ones tend to develop a bit of a lean.

  4. #24
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    Quote Originally Posted by mools View Post
    So why did disc brakes supersede drum brakes for the purpose of stopping a vehicle? All things equal if stopping power is simply down to contact area then drums should out perform disks every time shouldn't they? Or am I missing something?

    Ian.
    Discs brakes don't fade as badly as drums, are easier to maintain and are self adjusting.

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