ABS modification

[mikekean]

Thinking of fitting ABS to my rally car as in the wet the massive brakes just lock the wheels up if you even look at the brake pedal. Probably wont get used in the dry but id have the choice as it will be on a switch.

The modification I was thinking of doing was splicing the front a rear sensors together (per side) so that the ABS ecu cannot detect when the rear wheels are locked eg: when i pull the handbrake. But what i would like to know is will the abs still work? does it need the rear wheel input to detect when the fronts are locked or does it just go on if it senses lack of movement from the front wheels?

Thanks

Mike

 

[mloncar]

bump

 

[Fred@BTM]

does it need the rear wheel input to detect when the fronts are locked

yes, it will "see" the same speed from all 4 wheels, when you slam on the brakes and lock the fronts it "sees" slower wheel speed from the front wheels Vs the rear wheels and the ABS activates


what setup do you run now? i would suggest an adjustable brake bias valve so you can dial in more rear braking force in wet weather