Thread: just an idea, lockers alternative, what do you think?

Haultech do (did???) something similar.

Each wheel had a sensor, and then they used a air over hydraulic solinoid in each of the 4 brake lines. When the ETC ECU sensed wheel spin it would pulse air to the spinning wheels brake line. The sensitivity was adjustable in it. I would assume they could also have been used as cutting type brakes.

BTW, that would be a really dangerous setup you're talking about, especially if you needed to stop suddenly.

also had this idea at one stage i think it is similar to what the humvee's use... i rekon it will work but the problem will be i dont think it will be "legal" ( lockers are) and i think playing around with any brake components is a big NO NO but used in a strictly offrad vehicle it would be good i asume.. then again going to all that trouble of designing it and operating it (when you finally get the stuck wheel to get traction the other wheel will have the brake on stopping a free motion) also will have wear on brake pads and discs (maybe CV's also ??) so i decided it would be cheaper and safer to just get locker/lockers.

still a good thought and may have other paths to take with more design

cheers

You can do this already with the drum brakes fitted to old landies. Lightly apply the brakes and the leading shoes of the faster spinning wheel engage with more effort than the slower spinning ones.

or

just retrofit Traction control.

Originally Posted by Slunnie

Haultech do (did???) something similar.

Each wheel had a sensor, and then they used a air over hydraulic solinoid in each of the 4 brake lines. When the ETC ECU sensed wheel spin it would pulse air to the spinning wheels brake line. The sensitivity was adjustable in it. I would assume they could also have been used as cutting type brakes.

BTW, that would be a really dangerous setup you're talking about, especially if you needed to stop suddenly.

yeah, the safety issues are a problem, maybe if we could somehow have it cut off when break pedal is released for a moment, maybe have a relay from the brake pedal switch wired to cut-off.. ..or maybe you would have to hold the switch on, the electronic valves we have been looking at open and close in 15milliseconds ..food for thought though.

additionally you would probably only need this on the back wheels as in most cases you will have at least one rear wheel firmly on the ground, this would remove the potential risk of complete brake failure due to some random electrical fault or related.

Isnt this just the fiddle brake system the poms use in trialling. One lever for each wheel.

Originally Posted by Mick-Kelly

Isnt this just the fiddle brake system the poms use in trialling. One lever for each wheel.

Yeah but in reverse, the posters setup cuts the brakes to the other three wheels, whilst allowing pedal brakes to only the one wheel thats hanging.

as slunnie said.. a bit dodgy

fiddle brakes, haultech tc ect dont interupt normal braking but apply extra fluid pressure to the free wheel.

edit, actually i think the usual fiddle setup uses a seperate caliper - ie totally seperate system from the main brake setup.