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- Path: sparky!uunet!cis.ohio-state.edu!ucbvax!vicor.com!danapple
- From: danapple@vicor.com
- Newsgroups: rec.autos.tech
- Subject: Re: Handbrakes /discbrakes
- Message-ID: <9209031818.AA03075@wotke.vicor.com>
- Date: 3 Sep 92 18:18:21 GMT
- References: <eur.715439408@dutncp8>
- Sender: daemon@ucbvax.BERKELEY.EDU
- Lines: 41
-
-
- > 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.
-
- 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?
-
- Hope you at least find the Supra solution entertaining. I like it
- since it means I have six brakes.
-
- > eur
-
- Daniel I. Applebaum | danapple@vicor.com | 1986 Celica Supra "NVR DNF"
- "When the car is airborne nothing works, the brakes don't work,
- steering doesn't work, the gas pedal doesn't work, nothing works !!"
- --- Gerry Brinkman "Principles of Rallying" #2
-