Anti-roll

[Diablos-666]

Is it possible to retro fit an anti-roll system on a car?

By anti roll I mean a system that prevents a manual from rolling back on a hill start such as the ones fitted to the new mini?

[anonymous-user]

whats wrong with one of these??

[1point7bar]

You are talking about engine/chassis control networks.
Definitely not worth the grief.
If you are in dire need, buy a car with the function. It will be much cheaper.

[Defcon5]

Weld a ratchet to the rear wheels, if you dont need to reverse anywhere

[stevieturbo]

Or just buy an automatic.

[davepoth]

If your car has an electronic stability doodah that can brake individual wheels, then it would be technically possible. Good luck with reprogramming the ECU though.

[buggalugs]

Interesting... wonder how this would be doable.

You could live with a very slow roll backwards if you had quite high resolution wheel speed sensors... actually do normal wheel sensors know what direction you're moving in? I think not so that's out.

So you're into the engine ECU guessing how much torque it's putting out vs. what it thinks the weight of the car is vs. how steep it thinks the hill is... bleugh Never work.

Are there any systems and how do they work??

[1point7bar]

A G-sensor can tell management what angle the car is at and if motion is detected at wheel hall sensors without reverse being engaged. I suspect the systems are supplementary to the handbrake being released. I will try mine next time I drive it.

[buggalugs]

Interesting but I wonder how it knows the right moment to release the brakes? Or does it compromise and allow a tiny bit of movement?

[Red16]

What's the reasoning behind you wanting to do this?

[CaptainK]

Try talking to a mobility specialist.

[buggalugs]

Well I googled it last night and got a few different answers, some mfr's just do it the hard way with engine torque calcs etc. Some just have a dumb timer that keeps some brake force on for a few seconds regardless. I thought there might be a really simple clever way of doing it but I guess not. Rekon there would be something to be said for just having a ratchet in the wheels