AFAIK disc brakes have less braking power than drums in similar decent
conditions. The combination with servo braking systems makes the former more
powerful and the resistance to fading makes them superior when brakes get
hot, which can happen very often.
BTW, driving only with the rear brakes operative is much like driving with
no brakes at all. You can make the test by trying to brake with the so
called "emergency brake"....
Jeszs
> -----Mensaje original-----
> De: mg-t-bounces@autox.team.net [mailto:mg-t-bounces@autox.team.net] En
> nombre de Richard Kleihorst
> Enviado el: miircoles, 21 de abril de 2010 9:22
> Para: mg-t@autox.team.net
> Asunto: Re: [Mg-t] dual brake system
>
> Hi Charlie,
>
> And that is what I don't understand, how come disc brakes give more
> braking
> performance?
> Apart from less prone to fading and dust, disc brakes should be worse
> than
> drum brakes.
>
> Drum brakes are self-powering, the leading shoe forces itself to the
> drum when
> braking. Also the swept area is much larger than the pads of the disc
> brakes.
> Disc brakes have less play in the system and that is what improves the
> feel.
> But because of disc brakes they also had to introduce vacuum power
> boosters?
> All large trucks/lorries are drum brakes because they give more braking
> performance.
>
> On my "old green rover" I have the stock drum brakes but I added a
> vacuum
> booster (and modified to dual brakes) to even improve the pressure
> more. Now
> even with heavy trailers,
> it brakes strong.
>
>
> On the MG-TD, If I wanted to keep the drum brakes but go to dual, the
> lines of
> the rear and front are coming together close to the master, isn't it?
> So this
> could be done without hacking the system.
> Actually it is a pitty that MG went to hydraulic brakes so soon. The
> advantages of a Singer roadster is that with its mechanical system, it
> brakes
> even after staying for 10 years, the linkage just needs a lube and no
> spilling, topping up checking of DOT3, LMA,...
>
> >From: Charlie Baldwin <mgcharlie@comcast.net>
> >QSubject: Re: [Mg-t] dual brake system
> >To: "John F. Quilter" <jquilter@peoplepc.com>
> >Cc: MG T List <mg-t@autox.team.net>
> >Message-ID: <4BCDA2FF.300@comcast.net>
> >Content-Type: text/plain; charset="us-ascii"
> >
> >I agree that it would certainly not be the first safety upgrade that I
> >would make and probably never do it. The single thing that I've done
> to
> >the brakes on my TD that makes a large difference is to convert to
> front
> >disc brakes. It was a night and day conversion and I had the
> >intermediate step of having MGA 1500 drum brakes on it for many years
> >which were better than the stock brakes. When I converted to MGA 1600
> >disc brakes I went from driving on eggs, leaving large spaces between
> >the car ahead and me to driving it like my everyday car. Actually the
> >large spaces ahead only encouraged other drivers to pull out in front
> of
> >me making it even less safe.
______________________________________________
Mg-t@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation $11.47
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|