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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!mcsun!sun4nl!dutrun!dutrun2!dutncp8!eur
- From: eur@dutncp2.tn.tudelft.nl (Eur van Andel)
- Subject: Re: Handbrakes /discbrakes
- Message-ID: <eur.716206093@dutncp8>
- Sender: news@dutrun2.tudelft.nl (UseNet News System)
- Nntp-Posting-Host: dutncp8.tn.tudelft.nl
- Organisation: TU Delft, The Netherlands
- Organization: Delft University of Technology
- References: <eur.715439408@dutncp8> <9209031818.AA03075@wotke.vicor.com>
- Date: Fri, 11 Sep 1992 10:08:13 GMT
- Lines: 45
-
- In <9209031818.AA03075@wotke.vicor.com> danapple@vicor.com writes:
-
-
- >> eur@dutncp2.tn.tudelft.nl (Eur van Andel) writes:
- >> Dear netters
- >>
- >> After spending some time under my two Alfa's (with inboard rear discs)
- >> I wondered how the general solution is for braking with the handbrake
- >> on rear discs.
-
- >> How is it done? How do you move the slave cylinder mechanically?
-
- >I think there are at least two possible solutions to this problem. My
- >1986 Supra with 4 wheel discs uses one. A friends 1987 300Z with 4
- >wheel discs uses another.
-
- >The Supra actually has drum brakes built into the rear axle hubs. The
- >handbrake mechanically actuates the drum brakes to hold the car on
- >hills. I once used the handbrake to stop the car, to see if it would
- >work, and it did, but needed readjustment afterward. The little drums
- >are designed for holding, and stopping *once*. I don't believe they
- >have any cool air supply.
-
- So the Supra has discbrakes AND drumbrakes at the rear? Strange...
-
- >The 300Z uses a cable to actuate the rear calipers for the disc
- >brakes. Now that I think about it, though, you were asking for
- >details of this activation, which I don't know. Sorry.
-
- >Cars like the Supra only have a single piston in the brake caliper
- >anyway, the it is only the inner pad that ever gets pushed. The
- >caliper is floating, however, which means it can move along the axis
- >of the bolts holding. So pushing on one pad means the caliper moves,
- >and the outer pad also contacts this disc. Are you sure the Alfa is
- >not set up this way?
-
- Definitely. The caliper is bolted to the gearbox and cannot move.
- I know the mechanism that you describe: it's on nearly _all_ discbrakes
- after '84
-
-
- >Hope you at least find the Supra solution entertaining. I like it
- >since it means I have six brakes.
-
- Entertaining yes. But the question is answered!
-