Traction control?

[rupewrecht]

here's an idle thought...

My car doesn't have ABS, but it came on later years with the same setup. So,
I could retrofit the ABS sensors to the front hubs.

Would there be some way of triggering it the ABS sensors themselves to work as a traction control system by means of some aftermarket computer trickery?

As in effect, isn't that what traction control basically is? It just brakes that particular wheel until it stops slipping.

I imagine that making an ECU detect wheel slip would be the hard part though. Something to do with load removed from wheel (as it'd be spinning) and the combination of throttle position.

Thoughts?

[RINGERS23Q]

You can do it that way (like Motec and Autronic) or you can do it through the ecu sensing how quick the engine revs to redline.

[rupewrecht]

aha, interesting. cheers! Might have to do a bit more research to get it to work with a Wolf 3D.

[Sp33dY]

Might have to get it to work with a Wolf 3D.

Where will u find one of those?? :mrgreen:

Goodluck! :)

[scathing]

Would there be some way of triggering it the ABS sensors themselves to work as a traction control system by means of some aftermarket computer trickery?

Yes (http://www.racelogic.co.uk/?show=Traction_Control).


As in effect, isn't that what traction control basically is? It just brakes that particular wheel until it stops slipping.

Not necessarily. Most use a fuel or spark cut to pull power.

[4agte]

Where will u find one of those?? :mrgreen:

Goodluck! :)
ahh yes

[4agte]

aha, interesting. cheers! Might have to do a bit more research to get it to work with a Wolf 3D.
im pretty sure you could use one of the auxiliary imputs assuming you have enuf of them with whichever version of wolf 3d you have to be configured with 2 speed sensors on the rear wheels and cross reference it to rpm then at a certain value it would cut igniton or something like that

[rupewrecht]

im pretty sure you could use one of the auxiliary imputs assuming you have enuf of them with whichever version of wolf 3d you have to be configured with 2 speed sensors on the rear wheels and cross reference it to rpm then at a certain value it would cut igniton or something like that

Yeah, that's about right. Wolf V4 btw.

Trouble is, i've realised that to do the retard thing, it's going to retard both wheels - not just the spinning one which is primarily what i was after.

I think i'm just going to put in my LSD :lol: :lol:

Then the retard vs rear sensors would be the way to go.

quote from elsewhere:

The "trick" would be to also use a pair on the rear, and then do a simple PIC program that provides a YES/NO (ON/OFF) output to the Wolf. You then simply make the Wolf retard the timing/fuel to make the power drop off. The little box/PIC setup woudl simply look at the frequency coming off each front wheel and compare it to the average frequency from the rears. The threshold point for slip would be about 20% difference I'm thinking after you allow for the speed differences between wheels when turning on full lock.

On of the old skool handling/drag texts will probably give the exact slip rate that gives best acceleration vs loos of traction.

The electronics is dead simple if you're handy with the PIC stuff...

Cheers guys, given me something to think about!

[4agte]

Yeah, that's about right. Wolf V4 btw.

Trouble is, i've realised that to do the retard thing, it's going to retard both wheels - not just the spinning one which is primarily what i was after.

I think i'm just going to put in my LSD :lol: :lol:

Then the retard vs rear sensors would be the way to go.

quote from elsewhere:


Cheers guys, given me something to think about!
ahhh yeah the ecu is not going to be able to do that and setting up some sort of abs system to do it will just cost a crapload of money and time id do like you say put an lsd in and bobs your uncle.

Altho even with a single spinner cutting ignition or something like limiting boost will still do the same thing stop that single wheel from spinning youd probably have to do more of it for longer than with a lsd

[Frogger]

Reducing power to the spinning wheel is the way to go with controlling traction. Older systems which use brakes to limit wheelspin can cause your brakes to overheat under heavy footwork.

Good luck with the mod!

[McCoey]

here's an idle thought...

My car doesn't have ABS, but it came on later years with the same setup. So,
I could retrofit the ABS sensors to the front hubs.

Would there be some way of triggering it the ABS sensors themselves to work as a traction control system by means of some aftermarket computer trickery?

As in effect, isn't that what traction control basically is? It just brakes that particular wheel until it stops slipping.

I imagine that making an ECU detect wheel slip would be the hard part though. Something to do with load removed from wheel (as it'd be spinning) and the combination of throttle position.

Thoughts?

Funny thread. Rupe, knowing you I couldnt help but think of this when reading your initial post.

Hi, I have a Mazda Astina Hardtop turbo, it torque steers like a bitch and I am on my 5th gearbox, plus I am going through tyres quicker than underpants at the moment. Can you retrofit traction control, cos I dont want to be fitting my 6th gearbox.

[rupewrecht]

Lol shaddup Dan :P

It doesn't torque steer very much at all. It just loses traction :P

[crusty]

Just a quick note , having worked on heaps of cars with traction control, abs sensors and speed sensors work differently with there respective outputs , so if serious get a sensor that has the correct signal/phase (some cars run one for both others run 2) on any performance car (late model) usually cuts throttle(cableless t/body) the earlier setups cut fuel, never ignition (when power comes back on it would blow 6 ft flames ie seen a bee rev limiter work on a rotary!!) but I think the easiest would be to LSD it and wider tyres ,just my two cents worth

[llama_au]

Just put the LSD in Dan :P

You want torque steer, come for a ride in my car. Even with VLSD it like to change lanes from second to third when flooring it...